.gitignore

@@ -151,6 +151,3 @@ compile_commands.json
 CTestTestfile.cmake
 *.dump
 
-.vscode/c_cpp_properties.json
-semihosting_test/build/semihosting_test
-semihosting_test/build/Makefile

.gitmodules

@@ -1,6 +0,0 @@
-[submodule "benchmarks/coremark/cm"]
-	path = benchmarks/coremark/cm
-	url = https://github.com/eembc/coremark.git
-[submodule "bare-metal-bsp"]
-	path = bare-metal-bsp
-	url = https://git.minres.com/Firmware/MNRS-BM-BSP.git

CMakeLists.txt

@@ -1,11 +0,0 @@
-if (NOT DEFINED BOARD)
-	set(BOARD iss)
-endif()
-if (NOT DEFINED ISA)
-	set(ISA imc)
-endif()
-message(STATUS "Building firmware using ${BOARD} board configuration and isa ${ISA}")
-add_custom_target(fw-common ALL 
-	COMMAND make -C hello-world BOARD=${BOARD} ISA=${ISA} && make -C benchmarks/dhrystone BOARD=${BOARD} ISA=${ISA} && make -C benchmarks/coremark BOARD=${BOARD} ISA=${ISA}
-    USES_TERMINAL
-    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})

Jenkinsfile

@@ -1,81 +0,0 @@
-void checkout_project() {
-    checkout([
-        $class: 'GitSCM',
-        branches: [
-            [name: '*/main']
-        ],
-        extensions: [
-            [$class: 'CleanBeforeCheckout'],
-            [$class: 'SubmoduleOption', disableSubmodules: false, parentCredentials: true, recursiveSubmodules: true, reference: '', trackingSubmodules: false]
-        ],
-        submoduleCfg: [],
-        userRemoteConfigs: [
-            [credentialsId: 'gitea-jenkins', url: 'https://git.minres.com/Firmware/Firmwares.git']
-        ]
-    ])
-}
-
-void checkout_develop() {
-    dir("bare-metal-bsp") {
-        withCredentials([usernamePassword(credentialsId: 'gitea-jenkins', usernameVariable: 'GIT_USERNAME', passwordVariable: 'GIT_PASSWORD')]) {
-            sh ("git pull origin develop")
-        }
-    }
-    //sh("cd bare-metal-bsp && git checkout develop")
-}
-
-void make_hello(board) {
-    sh("make -C hello-world/ BOARD=${board}")
-    sh("make -C hello-world/ clean")
-}
-
-pipeline {
-    agent { docker { 
-        image 'ubuntu-riscv'
-        args '-v $HOME/.m2:/root/.m2'
-    }}
-    options {
-        // using the Timestamper plugin we can add timestamps to the console log
-        timestamps()
-        skipStagesAfterUnstable()
-    }
-    stages {
-        /*stage('checkout repo') { steps{ checkout_project()}}
-        stage('checkout develop') { steps{ checkout_develop()}}
-        stage('make iss') {steps { make_hello("iss")}}
-        stage('make hifive1') {steps { make_hello("hifive1")}}
-        stage('make TGC5L') {steps { make_hello("TGC5L")}}
-        stage('make rtl') {steps { make_hello("rtl")}}
-        stage('make ehrenberg') {steps { make_hello("ehrenberg")}}
-        stage('make tgc_vp') {steps { make_hello("tgc_vp")}}*/
-        stage('make hello-world') {
-            matrix {
-                axes {
-                    axis{
-                        name 'BOARD'
-                        values 'iss', 'hifive1', 'TGCP', 'ehrenberg', 'rtl', 'tgc_vp'
-                    }
-                }
-                stages {
-                    stage('Force sequential') {
-                        options {
-                            lock("One Board at a time")
-                        }
-                        stages {
-                            stage("make") {
-                                steps {
-                                    make_hello("${BOARD}")
-                                }
-                            }
-                        }
-                    }
-                }
-            } 
-        }
-    }
-    post {
-        failure {
-            sh("make -C hello-world/ clean")       
-        }
-    }
-}

README.md

@@ -1,25 +1,2 @@
-# MINRES Firmware Repository
-## Structure
-This repository comes with several executables ready to be built, such as `hello-world` or `coremark` and `dhrystone` in the `benchmark` directory.
-Creating the executables in the easiest way possible is done by calling `make`in the corresponding directory.
+# Firmware
 
-## Prerequisite
-This repository requires `riscv64-unknown-elf-gcc` to be located in `$PATH`.
-
-## How to Use
-When compiling executables, the target platform needs to be specified using the 'BOARD' variable. When compiling for the TGC5C for example, use  `make BOARD=tgc_vp`, when compiling for RTL `make BOARD=rtl`. The default value for the Board variable is 'iss'.
-The arch can be set with the 'ISA' variable, the default value is 'imc'.
-
-When compiling for the TGC5A VP for example, the call to create the correct binary is the following:
-```
-make BOARD=tgc_vp ISA=e
-```
-## Useful information
-Using `bear -- <build-command>` will cause a compile_commands.json to be emitted. This allows using completion tools like clangd. 
-
-## Current Limitations
-Currently, this repository only supports creation of 32-bit executables (Even when setting the `RISCV_ARCH` and `RISCV_ABI` manually).
-
-Compiling for the 'e' extension / ISA together with any other extension (`ISA=emc` for example), requires setting the `RISCV_ABI=ilp32e` explicitly. 
-
-When switching ABI or ARCH ensure that object files in the corresponding 'env' dir in the 'bare-metal-bsp' submodule are removed, so they get created with the appropriate flags (namely the 'init.o' file).

bare-metal-bsp

@@ -1 +0,0 @@
-Subproject commit 87dc0ec2304adcb94a25b397a357aadae1304867

benchmarks/coremark/.gitignore

@@ -1,4 +0,0 @@
-*.o
-*.elf
-*.log
-/coremark.*

benchmarks/coremark/Makefile

@@ -1,33 +0,0 @@
-TARGET := coremark
-ISA?=imc
-ITERATIONS?=600 # 300 for TGC
-
-ASM_SRCS := 
-C_SRCS := core_list_join.c core_main.c core_matrix.c core_state.c core_util.c core_portme.c ee_printf.c
-HEADERS := cm/coremark.h
-
-vpath %.c cm
-
-BOARD?=iss
-LINK_TARGET=link
-
-RISCV_ARCH:=rv32$(ISA)
-ifeq ($(ISA),e)
-    RISCV_ABI:=ilp32e
-else
-    RISCV_ABI:=ilp32
-endif
-
-PORT_CFLAGS = -DPERFORMANCE_RUN=1 -DCLOCKS_PER_SEC=10000000 -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast
-PORT_CFLAGS+= -g -O3 -fno-common -funroll-loops -finline-functions -falign-functions=16 -falign-jumps=4 -falign-loops=4 -finline-limit=1000 -fno-if-conversion2 -fselective-scheduling -fno-crossjumping -freorder-blocks-and-partition
-
-FLAGS_STR = "$(PORT_CFLAGS) $(XCFLAGS) $(XLFLAGS) $(LFLAGS_END)"
-
-CFLAGS = $(PORT_CFLAGS) -I. -Icm -DFLAGS_STR=\"$(FLAGS_STR)\"
-CFLAGS += -DITERATIONS=$(ITERATIONS)
-LDFLAGS := -g -Wl,--wrap=scanf -Wl,--wrap=printf -Wl,--wrap=exit -lgcc -lm
-
-TOOL_DIR=$(dir $(compiler))
-
-BSP_BASE = ../../bare-metal-bsp
-include $(BSP_BASE)/env/common-gcc.mk

benchmarks/coremark/cm

@@ -1 +0,0 @@
-Subproject commit d5fad6bd094899101a4e5fd53af7298160ced6ab

benchmarks/coremark/core_portme.c

@@ -1,198 +0,0 @@
-/*
-Copyright 2018 Embedded Microprocessor Benchmark Consortium (EEMBC)
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
-Original Author: Shay Gal-on
-*/
-#include "coremark.h"
-#include "core_portme.h"
-//Read cycle CSR
-unsigned long long _read_cycle()
-{
-    unsigned long long result;
-    unsigned long lower;
-    unsigned long upper1;
-    unsigned long upper2;
-
-    asm volatile (
-        "repeat_cycle_%=: csrr %0, cycleh;\n"
-        "        csrr %1, cycle;\n"
-        "        csrr %2, cycleh;\n"
-        "        bne %0, %2, repeat_cycle_%=;\n"
-        : "=r" (upper1),"=r" (lower),"=r" (upper2)    // Outputs   : temp variable for load result
-        :
-        :
-    );
-    *(unsigned long *)(&result) = lower;
-    *((unsigned long *)(&result)+1) = upper1;
-
-    return result;
-}
-
-volatile int tohost;
-volatile int fromhost;
-
-void exit(int n){
-      tohost = 0x1;
-      for (;;);
-}
-
-void __libc_init_array (void) {
-/*
-    size_t count;
-    size_t i;
-    count = __preinit_array_end - __preinit_array_start;
-    for (i = 0; i < count; i++)
-        __preinit_array_start[i] ();
-
-#ifdef HAVE_INIT_FINI
-    _init ();
-#endif
-
-    count = __init_array_end - __init_array_start;
-    for (i = 0; i < count; i++)
-    __init_array_start[i] ();
-*/
-}
-#if VALIDATION_RUN
-volatile ee_s32 seed1_volatile = 0x3415;
-volatile ee_s32 seed2_volatile = 0x3415;
-volatile ee_s32 seed3_volatile = 0x66;
-#endif
-#if PERFORMANCE_RUN
-volatile ee_s32 seed1_volatile = 0x0;
-volatile ee_s32 seed2_volatile = 0x0;
-volatile ee_s32 seed3_volatile = 0x66;
-#endif
-#if PROFILE_RUN
-volatile ee_s32 seed1_volatile = 0x8;
-volatile ee_s32 seed2_volatile = 0x8;
-volatile ee_s32 seed3_volatile = 0x8;
-#endif
-volatile ee_s32 seed4_volatile = ITERATIONS;
-volatile ee_s32 seed5_volatile = 0;
-/* Porting : Timing functions
-        How to capture time and convert to seconds must be ported to whatever is
-   supported by the platform. e.g. Read value from on board RTC, read value from
-   cpu clock cycles performance counter etc. Sample implementation for standard
-   time.h and windows.h definitions included.
-*/
-CORETIMETYPE
-barebones_clock()
-{
-    return (CORETIMETYPE)_read_cycle();
-}
-/* Define : TIMER_RES_DIVIDER
-        Divider to trade off timer resolution and total time that can be
-   measured.
-
-        Use lower values to increase resolution, but make sure that overflow
-   does not occur. If there are issues with the return value overflowing,
-   increase this value.
-        */
-#define GETMYTIME(_t)              (*_t = barebones_clock())
-#define MYTIMEDIFF(fin, ini)       ((fin) - (ini))
-#define TIMER_RES_DIVIDER          1
-#define SAMPLE_TIME_IMPLEMENTATION 1
-#define EE_TICKS_PER_SEC           (CLOCKS_PER_SEC / TIMER_RES_DIVIDER)
-
-/** Define Host specific (POSIX), or target specific global time variables. */
-static CORETIMETYPE start_time_val, stop_time_val;
-
-/* Function : start_time
-        This function will be called right before starting the timed portion of
-   the benchmark.
-
-        Implementation may be capturing a system timer (as implemented in the
-   example code) or zeroing some system parameters - e.g. setting the cpu clocks
-   cycles to 0.
-*/
-void
-start_time(void)
-{
-    GETMYTIME(&start_time_val);
-}
-/* Function : stop_time
-        This function will be called right after ending the timed portion of the
-   benchmark.
-
-        Implementation may be capturing a system timer (as implemented in the
-   example code) or other system parameters - e.g. reading the current value of
-   cpu cycles counter.
-*/
-void
-stop_time(void)
-{
-    GETMYTIME(&stop_time_val);
-}
-/* Function : get_time
-        Return an abstract "ticks" number that signifies time on the system.
-
-        Actual value returned may be cpu cycles, milliseconds or any other
-   value, as long as it can be converted to seconds by <time_in_secs>. This
-   methodology is taken to accomodate any hardware or simulated platform. The
-   sample implementation returns millisecs by default, and the resolution is
-   controlled by <TIMER_RES_DIVIDER>
-*/
-CORE_TICKS
-get_time(void)
-{
-    CORE_TICKS elapsed
-        = (CORE_TICKS)(MYTIMEDIFF(stop_time_val, start_time_val));
-    return elapsed;
-}
-/* Function : time_in_secs
-        Convert the value returned by get_time to seconds.
-
-        The <secs_ret> type is used to accomodate systems with no support for
-   floating point. Default implementation implemented by the EE_TICKS_PER_SEC
-   macro above.
-*/
-secs_ret
-time_in_secs(CORE_TICKS ticks)
-{
-    secs_ret retval = ((secs_ret)ticks) / (secs_ret)EE_TICKS_PER_SEC;
-    return retval;
-}
-
-ee_u32 default_num_contexts = 1;
-
-/* Function : portable_init
-        Target specific initialization code
-        Test for some common mistakes.
-*/
-void
-portable_init(core_portable *p, int *argc, char *argv[])
-{
-    if (sizeof(ee_ptr_int) != sizeof(ee_u8 *))
-    {
-        ee_printf(
-            "ERROR! Please define ee_ptr_int to a type that holds a "
-            "pointer!\n");
-    }
-    if (sizeof(ee_u32) != 4)
-    {
-        ee_printf("ERROR! Please define ee_u32 to a 32b unsigned type!\n");
-    }
-    p->portable_id = 1;
-    ee_printf("portable_init finished.\n");
-}
-/* Function : portable_fini
-        Target specific final code
-*/
-void
-portable_fini(core_portable *p)
-{
-    p->portable_id = 0;
-}

benchmarks/coremark/core_portme.h

@@ -1,210 +0,0 @@
-/*
-Copyright 2018 Embedded Microprocessor Benchmark Consortium (EEMBC)
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
-Original Author: Shay Gal-on
-*/
-/* Topic : Description
-        This file contains configuration constants required to execute on
-   different platforms
-*/
-#ifndef CORE_PORTME_H
-#define CORE_PORTME_H
-/************************/
-/* Data types and settings */
-/************************/
-/* Configuration : HAS_FLOAT
-        Define to 1 if the platform supports floating point.
-*/
-#ifndef HAS_FLOAT
-#define HAS_FLOAT 0
-#endif
-/* Configuration : HAS_TIME_H
-        Define to 1 if platform has the time.h header file,
-        and implementation of functions thereof.
-*/
-#ifndef HAS_TIME_H
-#define HAS_TIME_H 0
-#endif
-/* Configuration : USE_CLOCK
-        Define to 1 if platform has the time.h header file,
-        and implementation of functions thereof.
-*/
-#ifndef USE_CLOCK
-#define USE_CLOCK 0
-#endif
-/* Configuration : HAS_STDIO
-        Define to 1 if the platform has stdio.h.
-*/
-#ifndef HAS_STDIO
-#define HAS_STDIO 0
-#endif
-/* Configuration : HAS_PRINTF
-        Define to 1 if the platform has stdio.h and implements the printf
-   function.
-*/
-#ifndef HAS_PRINTF
-#define HAS_PRINTF 0
-#endif
-
-/* Definitions : COMPILER_VERSION, COMPILER_FLAGS, MEM_LOCATION
-        Initialize these strings per platform
-*/
-#ifndef COMPILER_VERSION
-#ifdef __GNUC__
-#define COMPILER_VERSION "GCC"__VERSION__
-#else
-#define COMPILER_VERSION "Please put compiler version here (e.g. gcc 4.1)"
-#endif
-#endif
-#ifndef COMPILER_FLAGS
-#define COMPILER_FLAGS \
-    FLAGS_STR /* "Please put compiler flags here (e.g. -o3)" */
-#endif
-#ifndef MEM_LOCATION
-#define MEM_LOCATION "STACK"
-#endif
-
-/* Data Types :
-        To avoid compiler issues, define the data types that need ot be used for
-   8b, 16b and 32b in <core_portme.h>.
-
-        *Imprtant* :
-        ee_ptr_int needs to be the data type used to hold pointers, otherwise
-   coremark may fail!!!
-*/
-typedef signed short   ee_s16;
-typedef unsigned short ee_u16;
-typedef signed int     ee_s32;
-typedef double         ee_f32;
-typedef unsigned char  ee_u8;
-typedef unsigned int   ee_u32;
-typedef ee_u32         ee_ptr_int;
-typedef ee_u32         ee_size_t;
-#define NULL ((void *)0)
-/* align_mem :
-        This macro is used to align an offset to point to a 32b value. It is
-   used in the Matrix algorithm to initialize the input memory blocks.
-*/
-#define align_mem(x) (void *)(4 + (((ee_ptr_int)(x)-1) & ~3))
-
-/* Configuration : CORE_TICKS
-        Define type of return from the timing functions.
- */
-#define CORETIMETYPE ee_u32
-typedef ee_u32 CORE_TICKS;
-
-/* Configuration : SEED_METHOD
-        Defines method to get seed values that cannot be computed at compile
-   time.
-
-        Valid values :
-        SEED_ARG - from command line.
-        SEED_FUNC - from a system function.
-        SEED_VOLATILE - from volatile variables.
-*/
-#ifndef SEED_METHOD
-#define SEED_METHOD SEED_VOLATILE
-#endif
-
-/* Configuration : MEM_METHOD
-        Defines method to get a block of memry.
-
-        Valid values :
-        MEM_MALLOC - for platforms that implement malloc and have malloc.h.
-        MEM_STATIC - to use a static memory array.
-        MEM_STACK - to allocate the data block on the stack (NYI).
-*/
-#ifndef MEM_METHOD
-#define MEM_METHOD MEM_STACK
-#endif
-
-/* Configuration : MULTITHREAD
-        Define for parallel execution
-
-        Valid values :
-        1 - only one context (default).
-        N>1 - will execute N copies in parallel.
-
-        Note :
-        If this flag is defined to more then 1, an implementation for launching
-   parallel contexts must be defined.
-
-        Two sample implementations are provided. Use <USE_PTHREAD> or <USE_FORK>
-   to enable them.
-
-        It is valid to have a different implementation of <core_start_parallel>
-   and <core_end_parallel> in <core_portme.c>, to fit a particular architecture.
-*/
-#ifndef MULTITHREAD
-#define MULTITHREAD 1
-#define USE_PTHREAD 0
-#define USE_FORK    0
-#define USE_SOCKET  0
-#endif
-
-/* Configuration : MAIN_HAS_NOARGC
-        Needed if platform does not support getting arguments to main.
-
-        Valid values :
-        0 - argc/argv to main is supported
-        1 - argc/argv to main is not supported
-
-        Note :
-        This flag only matters if MULTITHREAD has been defined to a value
-   greater then 1.
-*/
-#ifndef MAIN_HAS_NOARGC
-#define MAIN_HAS_NOARGC 0
-#endif
-
-/* Configuration : MAIN_HAS_NORETURN
-        Needed if platform does not support returning a value from main.
-
-        Valid values :
-        0 - main returns an int, and return value will be 0.
-        1 - platform does not support returning a value from main
-*/
-#ifndef MAIN_HAS_NORETURN
-#define MAIN_HAS_NORETURN 0
-#endif
-
-/* Variable : default_num_contexts
-        Not used for this simple port, must cintain the value 1.
-*/
-extern ee_u32 default_num_contexts;
-
-typedef struct CORE_PORTABLE_S
-{
-    ee_u8 portable_id;
-} core_portable;
-
-/* target specific init/fini */
-void portable_init(core_portable *p, int *argc, char *argv[]);
-void portable_fini(core_portable *p);
-
-#if !defined(PROFILE_RUN) && !defined(PERFORMANCE_RUN) \
-    && !defined(VALIDATION_RUN)
-#if (TOTAL_DATA_SIZE == 1200)
-#define PROFILE_RUN 1
-#elif (TOTAL_DATA_SIZE == 2000)
-#define PERFORMANCE_RUN 1
-#else
-#define VALIDATION_RUN 1
-#endif
-#endif
-
-int ee_printf(const char *fmt, ...);
-
-#endif /* CORE_PORTME_H */

benchmarks/coremark/cvt.c

@@ -1,127 +0,0 @@
-/*
-Copyright 2018 Embedded Microprocessor Benchmark Consortium (EEMBC)
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-#include <math.h>
-#define CVTBUFSIZE 80
-static char CVTBUF[CVTBUFSIZE];
-
-static char *
-cvt(double arg, int ndigits, int *decpt, int *sign, char *buf, int eflag)
-{
-    int    r2;
-    double fi, fj;
-    char * p, *p1;
-
-    if (ndigits < 0)
-        ndigits = 0;
-    if (ndigits >= CVTBUFSIZE - 1)
-        ndigits = CVTBUFSIZE - 2;
-    r2    = 0;
-    *sign = 0;
-    p     = &buf[0];
-    if (arg < 0)
-    {
-        *sign = 1;
-        arg   = -arg;
-    }
-    arg = modf(arg, &fi);
-    p1  = &buf[CVTBUFSIZE];
-
-    if (fi != 0)
-    {
-        p1 = &buf[CVTBUFSIZE];
-        while (fi != 0)
-        {
-            fj    = modf(fi / 10, &fi);
-            *--p1 = (int)((fj + .03) * 10) + '0';
-            r2++;
-        }
-        while (p1 < &buf[CVTBUFSIZE])
-            *p++ = *p1++;
-    }
-    else if (arg > 0)
-    {
-        while ((fj = arg * 10) < 1)
-        {
-            arg = fj;
-            r2--;
-        }
-    }
-    p1 = &buf[ndigits];
-    if (eflag == 0)
-        p1 += r2;
-    *decpt = r2;
-    if (p1 < &buf[0])
-    {
-        buf[0] = '\0';
-        return buf;
-    }
-    while (p <= p1 && p < &buf[CVTBUFSIZE])
-    {
-        arg *= 10;
-        arg  = modf(arg, &fj);
-        *p++ = (int)fj + '0';
-    }
-    if (p1 >= &buf[CVTBUFSIZE])
-    {
-        buf[CVTBUFSIZE - 1] = '\0';
-        return buf;
-    }
-    p = p1;
-    *p1 += 5;
-    while (*p1 > '9')
-    {
-        *p1 = '0';
-        if (p1 > buf)
-            ++*--p1;
-        else
-        {
-            *p1 = '1';
-            (*decpt)++;
-            if (eflag == 0)
-            {
-                if (p > buf)
-                    *p = '0';
-                p++;
-            }
-        }
-    }
-    *p = '\0';
-    return buf;
-}
-
-char *
-ecvt(double arg, int ndigits, int *decpt, int *sign)
-{
-    return cvt(arg, ndigits, decpt, sign, CVTBUF, 1);
-}
-
-char *
-ecvtbuf(double arg, int ndigits, int *decpt, int *sign, char *buf)
-{
-    return cvt(arg, ndigits, decpt, sign, buf, 1);
-}
-
-char *
-fcvt(double arg, int ndigits, int *decpt, int *sign)
-{
-    return cvt(arg, ndigits, decpt, sign, CVTBUF, 0);
-}
-
-char *
-fcvtbuf(double arg, int ndigits, int *decpt, int *sign, char *buf)
-{
-    return cvt(arg, ndigits, decpt, sign, buf, 0);
-}

benchmarks/coremark/ee_printf.c

@@ -1,705 +0,0 @@
-/*
-Copyright 2018 Embedded Microprocessor Benchmark Consortium (EEMBC)
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-#include <coremark.h>
-#include <stdarg.h>
-
-#define ZEROPAD   (1 << 0) /* Pad with zero */
-#define SIGN      (1 << 1) /* Unsigned/signed long */
-#define PLUS      (1 << 2) /* Show plus */
-#define SPACE     (1 << 3) /* Spacer */
-#define LEFT      (1 << 4) /* Left justified */
-#define HEX_PREP  (1 << 5) /* 0x */
-#define UPPERCASE (1 << 6) /* 'ABCDEF' */
-
-#define is_digit(c) ((c) >= '0' && (c) <= '9')
-
-static char *    digits       = "0123456789abcdefghijklmnopqrstuvwxyz";
-static char *    upper_digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-static ee_size_t strnlen(const char *s, ee_size_t count);
-
-static ee_size_t
-strnlen(const char *s, ee_size_t count)
-{
-    const char *sc;
-    for (sc = s; *sc != '\0' && count--; ++sc)
-        ;
-    return sc - s;
-}
-
-static int
-skip_atoi(const char **s)
-{
-    int i = 0;
-    while (is_digit(**s))
-        i = i * 10 + *((*s)++) - '0';
-    return i;
-}
-
-static char *
-number(char *str, long num, int base, int size, int precision, int type)
-{
-    char  c, sign, tmp[66];
-    char *dig = digits;
-    int   i;
-
-    if (type & UPPERCASE)
-        dig = upper_digits;
-    if (type & LEFT)
-        type &= ~ZEROPAD;
-    if (base < 2 || base > 36)
-        return 0;
-
-    c    = (type & ZEROPAD) ? '0' : ' ';
-    sign = 0;
-    if (type & SIGN)
-    {
-        if (num < 0)
-        {
-            sign = '-';
-            num  = -num;
-            size--;
-        }
-        else if (type & PLUS)
-        {
-            sign = '+';
-            size--;
-        }
-        else if (type & SPACE)
-        {
-            sign = ' ';
-            size--;
-        }
-    }
-
-    if (type & HEX_PREP)
-    {
-        if (base == 16)
-            size -= 2;
-        else if (base == 8)
-            size--;
-    }
-
-    i = 0;
-
-    if (num == 0)
-        tmp[i++] = '0';
-    else
-    {
-        while (num != 0)
-        {
-            tmp[i++] = dig[((unsigned long)num) % (unsigned)base];
-            num      = ((unsigned long)num) / (unsigned)base;
-        }
-    }
-
-    if (i > precision)
-        precision = i;
-    size -= precision;
-    if (!(type & (ZEROPAD | LEFT)))
-        while (size-- > 0)
-            *str++ = ' ';
-    if (sign)
-        *str++ = sign;
-
-    if (type & HEX_PREP)
-    {
-        if (base == 8)
-            *str++ = '0';
-        else if (base == 16)
-        {
-            *str++ = '0';
-            *str++ = digits[33];
-        }
-    }
-
-    if (!(type & LEFT))
-        while (size-- > 0)
-            *str++ = c;
-    while (i < precision--)
-        *str++ = '0';
-    while (i-- > 0)
-        *str++ = tmp[i];
-    while (size-- > 0)
-        *str++ = ' ';
-
-    return str;
-}
-
-static char *
-eaddr(char *str, unsigned char *addr, int size, int precision, int type)
-{
-    char  tmp[24];
-    char *dig = digits;
-    int   i, len;
-
-    if (type & UPPERCASE)
-        dig = upper_digits;
-    len = 0;
-    for (i = 0; i < 6; i++)
-    {
-        if (i != 0)
-            tmp[len++] = ':';
-        tmp[len++] = dig[addr[i] >> 4];
-        tmp[len++] = dig[addr[i] & 0x0F];
-    }
-
-    if (!(type & LEFT))
-        while (len < size--)
-            *str++ = ' ';
-    for (i = 0; i < len; ++i)
-        *str++ = tmp[i];
-    while (len < size--)
-        *str++ = ' ';
-
-    return str;
-}
-
-static char *
-iaddr(char *str, unsigned char *addr, int size, int precision, int type)
-{
-    char tmp[24];
-    int  i, n, len;
-
-    len = 0;
-    for (i = 0; i < 4; i++)
-    {
-        if (i != 0)
-            tmp[len++] = '.';
-        n = addr[i];
-
-        if (n == 0)
-            tmp[len++] = digits[0];
-        else
-        {
-            if (n >= 100)
-            {
-                tmp[len++] = digits[n / 100];
-                n          = n % 100;
-                tmp[len++] = digits[n / 10];
-                n          = n % 10;
-            }
-            else if (n >= 10)
-            {
-                tmp[len++] = digits[n / 10];
-                n          = n % 10;
-            }
-
-            tmp[len++] = digits[n];
-        }
-    }
-
-    if (!(type & LEFT))
-        while (len < size--)
-            *str++ = ' ';
-    for (i = 0; i < len; ++i)
-        *str++ = tmp[i];
-    while (len < size--)
-        *str++ = ' ';
-
-    return str;
-}
-
-#if HAS_FLOAT
-
-char *      ecvtbuf(double arg, int ndigits, int *decpt, int *sign, char *buf);
-char *      fcvtbuf(double arg, int ndigits, int *decpt, int *sign, char *buf);
-static void ee_bufcpy(char *d, char *s, int count);
-
-void
-ee_bufcpy(char *pd, char *ps, int count)
-{
-    char *pe = ps + count;
-    while (ps != pe)
-        *pd++ = *ps++;
-}
-
-static void
-parse_float(double value, char *buffer, char fmt, int precision)
-{
-    int   decpt, sign, exp, pos;
-    char *digits = NULL;
-    char  cvtbuf[80];
-    int   capexp = 0;
-    int   magnitude;
-
-    if (fmt == 'G' || fmt == 'E')
-    {
-        capexp = 1;
-        fmt += 'a' - 'A';
-    }
-
-    if (fmt == 'g')
-    {
-        digits    = ecvtbuf(value, precision, &decpt, &sign, cvtbuf);
-        magnitude = decpt - 1;
-        if (magnitude < -4 || magnitude > precision - 1)
-        {
-            fmt = 'e';
-            precision -= 1;
-        }
-        else
-        {
-            fmt = 'f';
-            precision -= decpt;
-        }
-    }
-
-    if (fmt == 'e')
-    {
-        digits = ecvtbuf(value, precision + 1, &decpt, &sign, cvtbuf);
-
-        if (sign)
-            *buffer++ = '-';
-        *buffer++ = *digits;
-        if (precision > 0)
-            *buffer++ = '.';
-        ee_bufcpy(buffer, digits + 1, precision);
-        buffer += precision;
-        *buffer++ = capexp ? 'E' : 'e';
-
-        if (decpt == 0)
-        {
-            if (value == 0.0)
-                exp = 0;
-            else
-                exp = -1;
-        }
-        else
-            exp = decpt - 1;
-
-        if (exp < 0)
-        {
-            *buffer++ = '-';
-            exp       = -exp;
-        }
-        else
-            *buffer++ = '+';
-
-        buffer[2] = (exp % 10) + '0';
-        exp       = exp / 10;
-        buffer[1] = (exp % 10) + '0';
-        exp       = exp / 10;
-        buffer[0] = (exp % 10) + '0';
-        buffer += 3;
-    }
-    else if (fmt == 'f')
-    {
-        digits = fcvtbuf(value, precision, &decpt, &sign, cvtbuf);
-        if (sign)
-            *buffer++ = '-';
-        if (*digits)
-        {
-            if (decpt <= 0)
-            {
-                *buffer++ = '0';
-                *buffer++ = '.';
-                for (pos = 0; pos < -decpt; pos++)
-                    *buffer++ = '0';
-                while (*digits)
-                    *buffer++ = *digits++;
-            }
-            else
-            {
-                pos = 0;
-                while (*digits)
-                {
-                    if (pos++ == decpt)
-                        *buffer++ = '.';
-                    *buffer++ = *digits++;
-                }
-            }
-        }
-        else
-        {
-            *buffer++ = '0';
-            if (precision > 0)
-            {
-                *buffer++ = '.';
-                for (pos = 0; pos < precision; pos++)
-                    *buffer++ = '0';
-            }
-        }
-    }
-
-    *buffer = '\0';
-}
-
-static void
-decimal_point(char *buffer)
-{
-    while (*buffer)
-    {
-        if (*buffer == '.')
-            return;
-        if (*buffer == 'e' || *buffer == 'E')
-            break;
-        buffer++;
-    }
-
-    if (*buffer)
-    {
-        int n = strnlen(buffer, 256);
-        while (n > 0)
-        {
-            buffer[n + 1] = buffer[n];
-            n--;
-        }
-
-        *buffer = '.';
-    }
-    else
-    {
-        *buffer++ = '.';
-        *buffer   = '\0';
-    }
-}
-
-static void
-cropzeros(char *buffer)
-{
-    char *stop;
-
-    while (*buffer && *buffer != '.')
-        buffer++;
-    if (*buffer++)
-    {
-        while (*buffer && *buffer != 'e' && *buffer != 'E')
-            buffer++;
-        stop = buffer--;
-        while (*buffer == '0')
-            buffer--;
-        if (*buffer == '.')
-            buffer--;
-        while (buffer != stop)
-            *++buffer = 0;
-    }
-}
-
-static char *
-flt(char *str, double num, int size, int precision, char fmt, int flags)
-{
-    char tmp[80];
-    char c, sign;
-    int  n, i;
-
-    // Left align means no zero padding
-    if (flags & LEFT)
-        flags &= ~ZEROPAD;
-
-    // Determine padding and sign char
-    c    = (flags & ZEROPAD) ? '0' : ' ';
-    sign = 0;
-    if (flags & SIGN)
-    {
-        if (num < 0.0)
-        {
-            sign = '-';
-            num  = -num;
-            size--;
-        }
-        else if (flags & PLUS)
-        {
-            sign = '+';
-            size--;
-        }
-        else if (flags & SPACE)
-        {
-            sign = ' ';
-            size--;
-        }
-    }
-
-    // Compute the precision value
-    if (precision < 0)
-        precision = 6; // Default precision: 6
-
-    // Convert floating point number to text
-    parse_float(num, tmp, fmt, precision);
-
-    if ((flags & HEX_PREP) && precision == 0)
-        decimal_point(tmp);
-    if (fmt == 'g' && !(flags & HEX_PREP))
-        cropzeros(tmp);
-
-    n = strnlen(tmp, 256);
-
-    // Output number with alignment and padding
-    size -= n;
-    if (!(flags & (ZEROPAD | LEFT)))
-        while (size-- > 0)
-            *str++ = ' ';
-    if (sign)
-        *str++ = sign;
-    if (!(flags & LEFT))
-        while (size-- > 0)
-            *str++ = c;
-    for (i = 0; i < n; i++)
-        *str++ = tmp[i];
-    while (size-- > 0)
-        *str++ = ' ';
-
-    return str;
-}
-
-#endif
-
-static int
-ee_vsprintf(char *buf, const char *fmt, va_list args)
-{
-    int           len;
-    unsigned long num;
-    int           i, base;
-    char *        str;
-    char *        s;
-
-    int flags; // Flags to number()
-
-    int field_width; // Width of output field
-    int precision;   // Min. # of digits for integers; max number of chars for
-                     // from string
-    int qualifier;   // 'h', 'l', or 'L' for integer fields
-
-    for (str = buf; *fmt; fmt++)
-    {
-        if (*fmt != '%')
-        {
-            *str++ = *fmt;
-            continue;
-        }
-
-        // Process flags
-        flags = 0;
-    repeat:
-        fmt++; // This also skips first '%'
-        switch (*fmt)
-        {
-            case '-':
-                flags |= LEFT;
-                goto repeat;
-            case '+':
-                flags |= PLUS;
-                goto repeat;
-            case ' ':
-                flags |= SPACE;
-                goto repeat;
-            case '#':
-                flags |= HEX_PREP;
-                goto repeat;
-            case '0':
-                flags |= ZEROPAD;
-                goto repeat;
-        }
-
-        // Get field width
-        field_width = -1;
-        if (is_digit(*fmt))
-            field_width = skip_atoi(&fmt);
-        else if (*fmt == '*')
-        {
-            fmt++;
-            field_width = va_arg(args, int);
-            if (field_width < 0)
-            {
-                field_width = -field_width;
-                flags |= LEFT;
-            }
-        }
-
-        // Get the precision
-        precision = -1;
-        if (*fmt == '.')
-        {
-            ++fmt;
-            if (is_digit(*fmt))
-                precision = skip_atoi(&fmt);
-            else if (*fmt == '*')
-            {
-                ++fmt;
-                precision = va_arg(args, int);
-            }
-            if (precision < 0)
-                precision = 0;
-        }
-
-        // Get the conversion qualifier
-        qualifier = -1;
-        if (*fmt == 'l' || *fmt == 'L')
-        {
-            qualifier = *fmt;
-            fmt++;
-        }
-
-        // Default base
-        base = 10;
-
-        switch (*fmt)
-        {
-            case 'c':
-                if (!(flags & LEFT))
-                    while (--field_width > 0)
-                        *str++ = ' ';
-                *str++ = (unsigned char)va_arg(args, int);
-                while (--field_width > 0)
-                    *str++ = ' ';
-                continue;
-
-            case 's':
-                s = va_arg(args, char *);
-                if (!s)
-                    s = "<NULL>";
-                len = strnlen(s, precision);
-                if (!(flags & LEFT))
-                    while (len < field_width--)
-                        *str++ = ' ';
-                for (i = 0; i < len; ++i)
-                    *str++ = *s++;
-                while (len < field_width--)
-                    *str++ = ' ';
-                continue;
-
-            case 'p':
-                if (field_width == -1)
-                {
-                    field_width = 2 * sizeof(void *);
-                    flags |= ZEROPAD;
-                }
-                str = number(str,
-                             (unsigned long)va_arg(args, void *),
-                             16,
-                             field_width,
-                             precision,
-                             flags);
-                continue;
-
-            case 'A':
-                flags |= UPPERCASE;
-
-            case 'a':
-                if (qualifier == 'l')
-                    str = eaddr(str,
-                                va_arg(args, unsigned char *),
-                                field_width,
-                                precision,
-                                flags);
-                else
-                    str = iaddr(str,
-                                va_arg(args, unsigned char *),
-                                field_width,
-                                precision,
-                                flags);
-                continue;
-
-            // Integer number formats - set up the flags and "break"
-            case 'o':
-                base = 8;
-                break;
-
-            case 'X':
-                flags |= UPPERCASE;
-
-            case 'x':
-                base = 16;
-                break;
-
-            case 'd':
-            case 'i':
-                flags |= SIGN;
-
-            case 'u':
-                break;
-
-#if HAS_FLOAT
-
-            case 'f':
-                str = flt(str,
-                          va_arg(args, double),
-                          field_width,
-                          precision,
-                          *fmt,
-                          flags | SIGN);
-                continue;
-
-#endif
-
-            default:
-                if (*fmt != '%')
-                    *str++ = '%';
-                if (*fmt)
-                    *str++ = *fmt;
-                else
-                    --fmt;
-                continue;
-        }
-
-        if (qualifier == 'l')
-            num = va_arg(args, unsigned long);
-        else if (flags & SIGN)
-            num = va_arg(args, int);
-        else
-            num = va_arg(args, unsigned int);
-
-        str = number(str, num, base, field_width, precision, flags);
-    }
-
-    *str = '\0';
-    return str - buf;
-}
-
-#include <platform.h>
-
-void
-uart_send_char(char c)
-{
-#if defined(BOARD_ehrenberg)
-            while (get_uart_rx_tx_reg_tx_free(uart)==0) ;
-            uart_write(uart, c);
-            if (c == '\n') {
-                while (get_uart_rx_tx_reg_tx_free(uart)==0) ;
-                uart_write(uart, '\r');
-            }
-#elif defined(BOARD_iss)
-            *((uint32_t*) 0xFFFF0000) = c;
-#else
-            while (UART0_REG(UART_REG_TXFIFO) & 0x80000000) ;
-            UART0_REG(UART_REG_TXFIFO) = c;
-            if (c == '\n') {
-                while (UART0_REG(UART_REG_TXFIFO) & 0x80000000) ;
-                UART0_REG(UART_REG_TXFIFO) = '\r';
-            }
-#endif
-}
-
-int
-ee_printf(const char *fmt, ...)
-{
-    char    buf[1024], *p;
-    va_list args;
-    int     n = 0;
-
-    va_start(args, fmt);
-    ee_vsprintf(buf, fmt, args);
-    va_end(args);
-    p = buf;
-    while (*p)
-    {
-        uart_send_char(*p);
-        n++;
-        p++;
-    }
-
-    return n;
-}

benchmarks/dhrystone/.gitignore

@@ -1,2 +0,0 @@
-dhrystone
-/dhrystone.dis

benchmarks/dhrystone/Makefile

@@ -1,24 +0,0 @@
-TARGET := dhrystone
-ISA?=imc
-ITERATIONS?=50000 # 20000 for TGC
-
-ASM_SRCS := 
-C_SRCS := dhry_stubs.c dhry_1.c dhry_2.c
-HEADERS := dhry.h
-
-BOARD?=iss
-LINK_TARGET=link
-RISCV_ARCH:=rv32$(ISA)
-ifeq ($(ISA),e)
-    RISCV_ABI:=ilp32e
-else
-    RISCV_ABI:=ilp32
-endif
-# '-lgcc -lm' are needed to add softfloat routines
-CFLAGS  := -g -O3 -DITERATIONS=$(ITERATIONS) -DHZ=32768 -DTIME -DNO_INIT -fno-inline -fno-builtin-printf -fno-common -Wno-implicit \
- -funroll-loops -fpeel-loops -fgcse-sm -fgcse-las
-
-TOOL_DIR=$(dir $(compiler))
-
-BSP_BASE = ../../bare-metal-bsp
-include $(BSP_BASE)/env/common-gcc.mk

demo_gpio/.cproject

@@ -0,0 +1,168 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
+	<storageModule moduleId="org.eclipse.cdt.core.settings">
+		<cconfiguration id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.516870870">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.516870870" moduleId="org.eclipse.cdt.core.settings" name="Debug">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.VCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.autotools.core.ErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="de.marw.cdt.cmake.core.CMakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.debug" cleanCommand="${cross_rm} -rf" description="" id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.516870870" name="Debug" optionalBuildProperties="org.eclipse.cdt.docker.launcher.containerbuild.property.selectedvolumes=,org.eclipse.cdt.docker.launcher.containerbuild.property.volumes=" parent="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.516870870">
+					<folderInfo id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.516870870." name="/" resourcePath="">
+						<toolChain id="ilg.gnumcueclipse.managedbuild.cross.riscv.toolchain.elf.debug.108811797" name="RISC-V Cross GCC">
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash.8320194" name="Create flash image" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash" useByScannerDiscovery="false" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting.379436257" name="Create extended listing" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting" useByScannerDiscovery="false"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize.1043841176" name="Print size" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize" useByScannerDiscovery="false" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.383399415" name="Optimization Level" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level" useByScannerDiscovery="true" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.more" valueType="enumerated"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.messagelength.178339006" name="Message length (-fmessage-length=0)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.messagelength" useByScannerDiscovery="true" value="false" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar.119459497" name="'char' is signed (-fsigned-char)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar" useByScannerDiscovery="true" value="false" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections.735578493" name="Function sections (-ffunction-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections" useByScannerDiscovery="true" value="false" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.datasections.663648478" name="Data sections (-fdata-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.datasections" useByScannerDiscovery="true" value="false" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.level.33211902" name="Debug level" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.level" useByScannerDiscovery="true" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.level.max" valueType="enumerated"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.format.1212459035" name="Debug format" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.format" useByScannerDiscovery="true"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.toolchain.name.2118228106" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.toolchain.name" useByScannerDiscovery="false" value="RISC-V GCC/Newlib" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.prefix.1953815021" name="Prefix" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.prefix" useByScannerDiscovery="false" value="riscv64-unknown-elf-" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.c.739203741" name="C compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.c" useByScannerDiscovery="false" value="gcc" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.cpp.1844392607" name="C++ compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.cpp" useByScannerDiscovery="false" value="g++" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.ar.2006331761" name="Archiver" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.ar" useByScannerDiscovery="false" value="ar" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.objcopy.953275776" name="Hex/Bin converter" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.objcopy" useByScannerDiscovery="false" value="objcopy" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.objdump.1629820216" name="Listing generator" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.objdump" useByScannerDiscovery="false" value="objdump" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.size.1139290195" name="Size command" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.size" useByScannerDiscovery="false" value="size" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.make.598152082" name="Build command" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.make" useByScannerDiscovery="false" value="make" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.rm.1903820766" name="Remove command" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.rm" useByScannerDiscovery="false" value="rm" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.base.274413758" name="Architecture" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.base" useByScannerDiscovery="false" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.arch.rv32i" valueType="enumerated"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.multiply.1227968882" name="Multiply extension (RVM)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.multiply" useByScannerDiscovery="false" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.atomic.25268933" name="Atomic extension (RVA)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.atomic" useByScannerDiscovery="false" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.compressed.148707865" name="Compressed extension (RVC)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.isa.compressed" useByScannerDiscovery="false" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.abi.integer.2137340048" name="Integer ABI" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.abi.integer" useByScannerDiscovery="false" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.abi.integer.ilp32" valueType="enumerated"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.codemodel.93793405" name="Code model" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.codemodel" useByScannerDiscovery="false" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.target.codemodel.any" valueType="enumerated"/>
+							<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="ilg.gnumcueclipse.managedbuild.cross.riscv.targetPlatform.1301923652" isAbstract="false" osList="all"/>
+							<builder buildPath="${workspace_loc:/demo_gpio}/Debug" id="ilg.gnumcueclipse.managedbuild.cross.riscv.builder.1496635672" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder"/>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+			<storageModule moduleId="ilg.gnumcueclipse.managedbuild.packs"/>
+		</cconfiguration>
+		<cconfiguration id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1992646408">
+			<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1992646408" moduleId="org.eclipse.cdt.core.settings" name="Release">
+				<externalSettings/>
+				<extensions>
+					<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
+					<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration artifactName="${ProjName}" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.release" cleanCommand="${cross_rm} -rf" description="" id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1992646408" name="Release" optionalBuildProperties="org.eclipse.cdt.docker.launcher.containerbuild.property.selectedvolumes=,org.eclipse.cdt.docker.launcher.containerbuild.property.volumes=" parent="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release">
+					<folderInfo id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1992646408." name="/" resourcePath="">
+						<toolChain id="ilg.gnumcueclipse.managedbuild.cross.riscv.toolchain.elf.release.1937283388" name="RISC-V Cross GCC" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.toolchain.elf.release">
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash.672219611" name="Create flash image" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createflash" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting.1692672647" name="Create extended listing" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.createlisting"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize.1955835524" name="Print size" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.addtools.printsize" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.1634926912" name="Optimization Level" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level" value="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.level.size" valueType="enumerated"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.messagelength.1936180446" name="Message length (-fmessage-length=0)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.messagelength" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar.148983493" name="'char' is signed (-fsigned-char)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.signedchar" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections.2117145633" name="Function sections (-ffunction-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.functionsections" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.datasections.1653949713" name="Data sections (-fdata-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.optimization.datasections" value="true" valueType="boolean"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.level.728682044" name="Debug level" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.level"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.format.1767313058" name="Debug format" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.debugging.format"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.toolchain.name.254213830" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.toolchain.name" value="RISC-V GCC/Newlib" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.prefix.372256120" name="Prefix" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.prefix" value="riscv64-unknown-elf-" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.c.298542489" name="C compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.c" value="gcc" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.cpp.1240126358" name="C++ compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.cpp" value="g++" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.ar.170388081" name="Archiver" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.ar" value="ar" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.objcopy.1277104890" name="Hex/Bin converter" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.objcopy" value="objcopy" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.objdump.488685269" name="Listing generator" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.objdump" value="objdump" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.size.554860593" name="Size command" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.size" value="size" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.make.468110366" name="Build command" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.make" value="make" valueType="string"/>
+							<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.rm.309041178" name="Remove command" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.command.rm" value="rm" valueType="string"/>
+							<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="ilg.gnumcueclipse.managedbuild.cross.riscv.targetPlatform.687762738" isAbstract="false" osList="all" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.targetPlatform"/>
+							<builder buildPath="${workspace_loc:/demo_gpio}/Release" id="ilg.gnumcueclipse.managedbuild.cross.riscv.builder.609463428" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.builder"/>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.1648537074" name="GNU RISC-V Cross Assembler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler">
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.usepreprocessor.1113623358" name="Use preprocessor" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.assembler.usepreprocessor" value="true" valueType="boolean"/>
+								<inputType id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.input.1033931684" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.assembler.input"/>
+							</tool>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.1778523424" name="GNU RISC-V Cross C Compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler">
+								<inputType id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input.1714150627" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input"/>
+							</tool>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.cpp.compiler.669753833" name="GNU RISC-V Cross C++ Compiler" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.cpp.compiler"/>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.linker.1530679232" name="GNU RISC-V Cross C Linker" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.linker">
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.gcsections.1637900674" name="Remove unused sections (-Xlinker --gc-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.c.linker.gcsections" value="true" valueType="boolean"/>
+								<inputType id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.linker.input.1335245598" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.linker.input">
+									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
+									<additionalInput kind="additionalinput" paths="$(LIBS)"/>
+								</inputType>
+							</tool>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.cpp.linker.648232936" name="GNU RISC-V Cross C++ Linker" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.cpp.linker">
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.cpp.linker.gcsections.929507343" name="Remove unused sections (-Xlinker --gc-sections)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.cpp.linker.gcsections" value="true" valueType="boolean"/>
+							</tool>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.archiver.439296099" name="GNU RISC-V Cross Archiver" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.archiver"/>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.createflash.2024214820" name="GNU RISC-V Cross Create Flash Image" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.createflash"/>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.createlisting.1648338834" name="GNU RISC-V Cross Create Listing" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.createlisting">
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.source.1291642104" name="Display source (--source|-S)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.source" value="true" valueType="boolean"/>
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.allheaders.616461822" name="Display all headers (--all-headers|-x)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.allheaders" value="true" valueType="boolean"/>
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.demangle.1146271318" name="Demangle names (--demangle|-C)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.demangle" value="true" valueType="boolean"/>
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.linenumbers.1242922810" name="Display line numbers (--line-numbers|-l)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.linenumbers" value="true" valueType="boolean"/>
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.wide.876301703" name="Wide lines (--wide|-w)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.wide" value="true" valueType="boolean"/>
+							</tool>
+							<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.printsize.1112238656" name="GNU RISC-V Cross Print Size" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.printsize">
+								<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.printsize.format.483461408" name="Size format" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.printsize.format"/>
+							</tool>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+			<storageModule moduleId="ilg.gnumcueclipse.managedbuild.packs"/>
+		</cconfiguration>
+	</storageModule>
+	<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+		<project id="demo_gpio.ilg.gnumcueclipse.managedbuild.cross.riscv.target.elf.431462479" name="Executable"/>
+	</storageModule>
+	<storageModule moduleId="scannerConfiguration">
+		<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		<scannerConfigBuildInfo instanceId="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1992646408;ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1992646408.;ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.1778523424;ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input.1714150627">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		</scannerConfigBuildInfo>
+		<scannerConfigBuildInfo instanceId="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.516870870;ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.516870870.;ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.1632260763;ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input.517786622">
+			<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+		</scannerConfigBuildInfo>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
+	<storageModule moduleId="refreshScope" versionNumber="2">
+		<configuration configurationName="Debug">
+			<resource resourceType="PROJECT" workspacePath="/demo_gpio"/>
+		</configuration>
+		<configuration configurationName="Release">
+			<resource resourceType="PROJECT" workspacePath="/demo_gpio"/>
+		</configuration>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.make.core.buildtargets">
+		<buildTargets>
+			<target name="all" path="" targetID="org.eclipse.cdt.build.MakeTargetBuilder">
+				<buildCommand>make</buildCommand>
+				<buildArguments/>
+				<buildTarget>all</buildTarget>
+				<stopOnError>true</stopOnError>
+				<useDefaultCommand>true</useDefaultCommand>
+				<runAllBuilders>true</runAllBuilders>
+			</target>
+		</buildTargets>
+	</storageModule>
+</cproject>

demo_gpio/.gitignore

@@ -0,0 +1 @@
+/Debug/

demo_gpio/.project

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>demo_gpio</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+	</natures>
+</projectDescription>

demo_gpio/demo_gpio.c

@@ -0,0 +1,255 @@
+// See LICENSE for license details.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "platform.h"
+#include <string.h>
+#include "plic/plic_driver.h"
+#include "encoding.h"
+#include <unistd.h>
+#include "stdatomic.h"
+
+void reset_demo (void);
+
+// Structures for registering different interrupt handlers
+// for different parts of the application.
+typedef void (*function_ptr_t) (void);
+
+void no_interrupt_handler (void) {};
+
+function_ptr_t g_ext_interrupt_handlers[PLIC_NUM_INTERRUPTS];
+
+
+// Instance data for the PLIC.
+
+plic_instance_t g_plic;
+
+
+/*Entry Point for PLIC Interrupt Handler*/
+void handle_m_ext_interrupt(){
+  plic_source int_num  = PLIC_claim_interrupt(&g_plic);
+  if ((int_num >=1 ) && (int_num < PLIC_NUM_INTERRUPTS)) {
+    g_ext_interrupt_handlers[int_num]();
+  }
+  else {
+    exit(1 + (uintptr_t) int_num);
+  }
+  PLIC_complete_interrupt(&g_plic, int_num);
+}
+
+
+/*Entry Point for Machine Timer Interrupt Handler*/
+void handle_m_time_interrupt(){
+
+  clear_csr(mie, MIP_MTIP);
+
+  // Reset the timer for 3s in the future.
+  // This also clears the existing timer interrupt.
+
+  volatile uint64_t * mtime       = (uint64_t*) (CLINT_CTRL_ADDR + CLINT_MTIME);
+  volatile uint64_t * mtimecmp    = (uint64_t*) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
+  uint64_t now = *mtime;
+  uint64_t then = now + 2 * RTC_FREQ;
+  *mtimecmp = then;
+
+  // read the current value of the LEDS and invert them.
+  uint32_t leds = GPIO_REG(GPIO_OUTPUT_VAL);
+
+  GPIO_REG(GPIO_OUTPUT_VAL) ^= ((0x1 << RED_LED_OFFSET)   |
+				(0x1 << GREEN_LED_OFFSET) |
+				(0x1 << BLUE_LED_OFFSET));
+  
+  // Re-enable the timer interrupt.
+  set_csr(mie, MIP_MTIP);
+
+}
+
+
+const char * instructions_msg = " \
+\n\
+                SIFIVE, INC.\n\
+\n\
+         5555555555555555555555555\n\
+        5555                   5555\n\
+       5555                     5555\n\
+      5555                       5555\n\
+     5555       5555555555555555555555\n\
+    5555       555555555555555555555555\n\
+   5555                             5555\n\
+  5555                               5555\n\
+ 5555                                 5555\n\
+5555555555555555555555555555          55555\n\
+ 55555           555555555           55555\n\
+   55555           55555           55555\n\
+     55555           5           55555\n\
+       55555                   55555\n\
+         55555               55555\n\
+           55555           55555\n\
+             55555       55555\n\
+               55555   55555\n\
+                 555555555\n\
+                   55555\n\
+                     5\n\
+\n\
+SiFive E-Series Software Development Kit 'demo_gpio' program.\n\
+Every 2 second, the Timer Interrupt will invert the LEDs.\n\
+(Arty Dev Kit Only): Press Buttons 0, 1, 2 to Set the LEDs.\n\
+Pin 19 (HiFive1) or A5 (Arty Dev Kit) is being bit-banged\n\
+for GPIO speed demonstration.\n\
+\n\
+";
+
+void print_instructions() {
+
+  write (STDOUT_FILENO, instructions_msg, strlen(instructions_msg));
+
+}
+
+#ifdef HAS_BOARD_BUTTONS
+void button_0_handler(void) {
+
+  // Red LED on
+  GPIO_REG(GPIO_OUTPUT_VAL) |= (0x1 << RED_LED_OFFSET);
+
+  // Clear the GPIO Pending interrupt by writing 1.
+  GPIO_REG(GPIO_RISE_IP) = (0x1 << BUTTON_0_OFFSET);
+
+};
+
+void button_1_handler(void) {
+
+  // Green LED On
+  GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << GREEN_LED_OFFSET);
+
+  // Clear the GPIO Pending interrupt by writing 1.
+  GPIO_REG(GPIO_RISE_IP) = (0x1 << BUTTON_1_OFFSET);
+
+};
+
+
+void button_2_handler(void) {
+
+  // Blue LED On
+  GPIO_REG(GPIO_OUTPUT_VAL) |= (1 << BLUE_LED_OFFSET);
+
+  GPIO_REG(GPIO_RISE_IP) = (0x1 << BUTTON_2_OFFSET);
+
+};
+#endif
+
+void reset_demo (){
+
+  // Disable the machine & timer interrupts until setup is done.
+
+  clear_csr(mie, MIP_MEIP);
+  clear_csr(mie, MIP_MTIP);
+
+  for (int ii = 0; ii < PLIC_NUM_INTERRUPTS; ii ++){
+    g_ext_interrupt_handlers[ii] = no_interrupt_handler;
+  }
+
+#ifdef HAS_BOARD_BUTTONS
+  g_ext_interrupt_handlers[INT_DEVICE_BUTTON_0] = button_0_handler;
+  g_ext_interrupt_handlers[INT_DEVICE_BUTTON_1] = button_1_handler;
+  g_ext_interrupt_handlers[INT_DEVICE_BUTTON_2] = button_2_handler;
+#endif
+
+  print_instructions();
+
+#ifdef HAS_BOARD_BUTTONS
+
+  // Have to enable the interrupt both at the GPIO level,
+  // and at the PLIC level.
+  PLIC_enable_interrupt (&g_plic, INT_DEVICE_BUTTON_0);
+  PLIC_enable_interrupt (&g_plic, INT_DEVICE_BUTTON_1);
+  PLIC_enable_interrupt (&g_plic, INT_DEVICE_BUTTON_2);
+
+  // Priority must be set > 0 to trigger the interrupt.
+  PLIC_set_priority(&g_plic, INT_DEVICE_BUTTON_0, 1);
+  PLIC_set_priority(&g_plic, INT_DEVICE_BUTTON_1, 1);
+  PLIC_set_priority(&g_plic, INT_DEVICE_BUTTON_2, 1);
+
+  GPIO_REG(GPIO_RISE_IE) |= (1 << BUTTON_0_OFFSET);
+  GPIO_REG(GPIO_RISE_IE) |= (1 << BUTTON_1_OFFSET);
+  GPIO_REG(GPIO_RISE_IE) |= (1 << BUTTON_2_OFFSET);
+
+#endif
+
+    // Set the machine timer to go off in 3 seconds.
+    // The
+    volatile uint64_t * mtime       = (uint64_t*) (CLINT_CTRL_ADDR + CLINT_MTIME);
+    volatile uint64_t * mtimecmp    = (uint64_t*) (CLINT_CTRL_ADDR + CLINT_MTIMECMP);
+    uint64_t now = *mtime;
+    uint64_t then = now + 2*RTC_FREQ;
+    *mtimecmp = then;
+
+    // Enable the Machine-External bit in MIE
+    set_csr(mie, MIP_MEIP);
+
+    // Enable the Machine-Timer bit in MIE
+    set_csr(mie, MIP_MTIP);
+
+    // Enable interrupts in general.
+    set_csr(mstatus, MSTATUS_MIE);
+}
+
+int main(int argc, char **argv)
+{
+  // Set up the GPIOs such that the LED GPIO
+  // can be used as both Inputs and Outputs.
+  
+
+#ifdef HAS_BOARD_BUTTONS
+  GPIO_REG(GPIO_OUTPUT_EN)  &= ~((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET));
+  GPIO_REG(GPIO_PULLUP_EN)  &= ~((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET));
+  GPIO_REG(GPIO_INPUT_EN)   |=  ((0x1 << BUTTON_0_OFFSET) | (0x1 << BUTTON_1_OFFSET) | (0x1 << BUTTON_2_OFFSET));
+#endif
+
+  GPIO_REG(GPIO_INPUT_EN)    &= ~((0x1<< RED_LED_OFFSET) | (0x1<< GREEN_LED_OFFSET) | (0x1 << BLUE_LED_OFFSET)) ;
+  GPIO_REG(GPIO_OUTPUT_EN)   |=  ((0x1<< RED_LED_OFFSET)| (0x1<< GREEN_LED_OFFSET) | (0x1 << BLUE_LED_OFFSET)) ;
+  GPIO_REG(GPIO_OUTPUT_VAL)  |=   (0x1 << BLUE_LED_OFFSET) ;
+  GPIO_REG(GPIO_OUTPUT_VAL)  &=  ~((0x1<< RED_LED_OFFSET) | (0x1<< GREEN_LED_OFFSET)) ;
+
+  
+  // For Bit-banging with Atomics demo.
+  
+  uint32_t bitbang_mask = 0;
+#ifdef _SIFIVE_HIFIVE1_H
+  bitbang_mask = (1 << PIN_19_OFFSET);
+#else
+#ifdef _SIFIVE_COREPLEXIP_ARTY_H
+  bitbang_mask = (0x1 << JA_0_OFFSET);
+#endif
+#endif
+
+  GPIO_REG(GPIO_OUTPUT_EN) |= bitbang_mask;
+  
+  /**************************************************************************
+   * Set up the PLIC
+   *
+   *************************************************************************/
+  PLIC_init(&g_plic,
+	    PLIC_CTRL_ADDR,
+	    PLIC_NUM_INTERRUPTS,
+	    PLIC_NUM_PRIORITIES);
+
+  reset_demo();
+
+  /**************************************************************************
+   * Demonstrate fast GPIO bit-banging.
+   * One can bang it faster than this if you know
+   * the entire OUTPUT_VAL that you want to write, but 
+   * Atomics give a quick way to control a single bit.
+   *************************************************************************/
+  // For Bit-banging with Atomics demo.
+  uint32_t cnt=0;
+  while(cnt<200){
+	  asm volatile ("wfi");
+	  printf("Finished run#%u\n", ++cnt);
+	  for(size_t i=0; i<100; ++i)
+		  atomic_fetch_xor_explicit(&GPIO_REG(GPIO_OUTPUT_VAL), bitbang_mask, memory_order_relaxed);
+  }
+
+  return 0;
+
+}

demo_gpio/sifive-freedom-e300-hifive1.cfg

@@ -0,0 +1,34 @@
+adapter_khz     10000
+
+interface ftdi
+ftdi_device_desc "Dual RS232-HS"
+ftdi_vid_pid 0x0403 0x6010
+
+ftdi_layout_init 0x0008 0x001b
+ftdi_layout_signal nSRST -oe 0x0020 -data 0x0020
+
+#Reset Stretcher logic on FE310 is ~1 second long
+#This doesn't apply if you use
+# ftdi_set_signal, but still good to document
+#adapter_nsrst_delay 1500
+
+set _CHIPNAME riscv
+jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id 0x10e31913
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME riscv -chain-position $_TARGETNAME
+$_TARGETNAME configure -work-area-phys 0x80000000 -work-area-size 10000 -work-area-backup 1
+
+flash bank onboard_spi_flash fespi 0x20000000 0 0 0 $_TARGETNAME
+init
+#reset -- This type of reset is not implemented yet
+if {[ info exists pulse_srst]} {
+  ftdi_set_signal nSRST 0
+  ftdi_set_signal nSRST z
+  #Wait for the reset stretcher
+  #It will work without this, but
+  #will incur lots of delays for later commands.
+  sleep 1500
+}	
+halt
+flash protect 0 64 last off

dhrystone/.cproject

@@ -14,7 +14,7 @@
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
-				<configuration buildProperties="" id="cdt.managedbuild.toolchain.gnu.cross.base.574338120" name="Default" optionalBuildProperties="" parent="org.eclipse.cdt.build.core.emptycfg">
+				<configuration buildProperties="" id="cdt.managedbuild.toolchain.gnu.cross.base.574338120" name="Default" parent="org.eclipse.cdt.build.core.emptycfg">
 					<folderInfo id="cdt.managedbuild.toolchain.gnu.cross.base.574338120.193230058" name="/" resourcePath="">
 						<toolChain id="cdt.managedbuild.toolchain.gnu.cross.base.1380433779" name="Cross GCC" superClass="cdt.managedbuild.toolchain.gnu.cross.base">
 							<option id="cdt.managedbuild.option.gnu.cross.prefix.1116043753" name="Prefix" superClass="cdt.managedbuild.option.gnu.cross.prefix"/>
@@ -57,7 +57,6 @@
 		<buildTargets>
 			<target name="all" path="" targetID="org.eclipse.cdt.build.MakeTargetBuilder">
 				<buildCommand>make</buildCommand>
-				<buildArguments/>
 				<buildTarget>all</buildTarget>
 				<stopOnError>true</stopOnError>
 				<useDefaultCommand>true</useDefaultCommand>
@@ -65,27 +64,12 @@
 			</target>
 			<target name="clean" path="" targetID="org.eclipse.cdt.build.MakeTargetBuilder">
 				<buildCommand>make</buildCommand>
+				<buildArguments/>
 				<buildTarget>clean</buildTarget>
 				<stopOnError>true</stopOnError>
 				<useDefaultCommand>true</useDefaultCommand>
 				<runAllBuilders>true</runAllBuilders>
 			</target>
-			<target name="all BOARD=tgc-vp" path="" targetID="org.eclipse.cdt.build.MakeTargetBuilder">
-				<buildCommand>make</buildCommand>
-				<buildArguments/>
-				<buildTarget>all BOARD=tgc-vp</buildTarget>
-				<stopOnError>true</stopOnError>
-				<useDefaultCommand>true</useDefaultCommand>
-				<runAllBuilders>true</runAllBuilders>
-			</target>
-			<target name="all BOARD=iss" path="" targetID="org.eclipse.cdt.build.MakeTargetBuilder">
-				<buildCommand>make</buildCommand>
-				<buildArguments/>
-				<buildTarget>all BOARD=iss</buildTarget>
-				<stopOnError>true</stopOnError>
-				<useDefaultCommand>true</useDefaultCommand>
-				<runAllBuilders>true</runAllBuilders>
-			</target>
 		</buildTargets>
 	</storageModule>
-</cproject>
+</cproject>

dhrystone/.gitignore

@@ -0,0 +1 @@
+dhrystone

dhrystone/.project

@@ -3,7 +3,7 @@
 	<name>dhrystone</name>
 	<comment></comment>
 	<projects>
-		<project>bare-metal-bsp</project>
+		<project>bsp</project>
 	</projects>
 	<buildSpec>
 		<buildCommand>

dhrystone/Makefile

@@ -0,0 +1,25 @@
+TARGET := dhrystone
+
+ASM_SRCS := 
+C_SRCS := dhry_stubs.c dhry_printf.c
+HEADERS := dhry.h
+
+DHRY_SRCS := dhry_1.c dhry_2.c
+DHRY_CFLAGS := -O2 -DTIME -DNO_INIT -fno-inline -fno-builtin-printf -Wno-implicit -march=rv32ima
+
+XLEN ?= 32
+CFLAGS := -g -Og -fno-common
+LDFLAGS := -g -Wl,--wrap=scanf -Wl,--wrap=printf -Wl,--wrap=exit
+
+DHRY_OBJS := $(patsubst %.c,%.o,$(DHRY_SRCS))
+LINK_OBJS := $(DHRY_OBJS)
+
+#BOARD = iss
+BOARD=freedom-e300-hifive1
+TOOL_DIR=/opt/shared/riscv/FreedomStudio/20180122/SiFive/riscv64-unknown-elf-gcc-20171231-x86_64-linux-centos6/bin
+
+BSP_BASE = bsp
+include $(BSP_BASE)/env/common.mk
+
+$(DHRY_OBJS): %.o: %.c $(HEADERS)
+	$(CC) $(CFLAGS) $(DHRY_CFLAGS) -c -o $@ $<

dhrystone/bsp/env/common.mk

@@ -0,0 +1,60 @@
+# See LICENSE for license details.
+
+ifndef _SIFIVE_MK_COMMON
+_SIFIVE_MK_COMMON := # defined
+
+.PHONY: all
+all: $(TARGET)
+
+include $(BSP_BASE)/libwrap/libwrap.mk
+
+BOARD ?= freedom-e300-hifive1
+ENV_DIR = $(BSP_BASE)/env
+PLATFORM_DIR = $(ENV_DIR)/$(BOARD)
+
+#TARGET_FLAVOR := -march=rv32imac -mabi=ilp32 -mcmodel=medany -msmall-data-limit=8 -x assembler-with-cpp
+TARGET_FLAVOR := -march=rv32imac -mabi=ilp32
+
+ASM_SRCS += $(ENV_DIR)/start.S
+ASM_SRCS += $(ENV_DIR)/entry.S
+C_SRCS += $(PLATFORM_DIR)/init.c
+
+LINKER_SCRIPT := $(PLATFORM_DIR)/link.lds
+
+INCLUDES += -I$(BSP_BASE)/include
+INCLUDES += -I$(BSP_BASE)/drivers/
+INCLUDES += -I$(ENV_DIR)
+INCLUDES += -I$(PLATFORM_DIR)
+
+TOOL_DIR ?= $(BSP_BASE)/../toolchain/bin
+
+CC := $(TOOL_DIR)/riscv64-unknown-elf-gcc ${TARGET_FLAVOR}
+AR := $(TOOL_DIR)/riscv64-unknown-elf-ar
+
+LDFLAGS += -T $(LINKER_SCRIPT) -nostartfiles
+LDFLAGS += -L$(ENV_DIR)
+
+ASM_OBJS := $(ASM_SRCS:.S=.o)
+C_OBJS := $(C_SRCS:.c=.o)
+
+LINK_OBJS += $(ASM_OBJS) $(C_OBJS)
+LINK_DEPS += $(LINKER_SCRIPT)
+
+CLEAN_OBJS += $(TARGET) $(LINK_OBJS)
+
+CFLAGS += -g
+
+$(TARGET): $(LINK_OBJS) $(LINK_DEPS)
+	$(CC) $(CFLAGS) $(INCLUDES) $(LINK_OBJS) -o $@ $(LDFLAGS)
+
+$(ASM_OBJS): %.o: %.S $(HEADERS)
+	$(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $<
+
+$(C_OBJS): %.o: %.c $(HEADERS)
+	$(CC) $(CFLAGS) $(INCLUDES) -include sys/cdefs.h -c -o $@ $<
+
+.PHONY: clean
+clean:
+	rm -f $(CLEAN_OBJS)
+
+endif # _SIFIVE_MK_COMMON

dhrystone/bsp/env/entry.S

@@ -0,0 +1,97 @@
+// See LICENSE for license details
+
+#ifndef ENTRY_S
+#define ENTRY_S
+
+#include "encoding.h"
+#include "sifive/bits.h"
+
+  .section      .text.entry	
+  .align 2
+  .global trap_entry
+trap_entry:
+  addi sp, sp, -32*REGBYTES
+
+  STORE x1, 1*REGBYTES(sp)
+  STORE x2, 2*REGBYTES(sp)
+  STORE x3, 3*REGBYTES(sp)
+  STORE x4, 4*REGBYTES(sp)
+  STORE x5, 5*REGBYTES(sp)
+  STORE x6, 6*REGBYTES(sp)
+  STORE x7, 7*REGBYTES(sp)
+  STORE x8, 8*REGBYTES(sp)
+  STORE x9, 9*REGBYTES(sp)
+  STORE x10, 10*REGBYTES(sp)
+  STORE x11, 11*REGBYTES(sp)
+  STORE x12, 12*REGBYTES(sp)
+  STORE x13, 13*REGBYTES(sp)
+  STORE x14, 14*REGBYTES(sp)
+  STORE x15, 15*REGBYTES(sp)
+  STORE x16, 16*REGBYTES(sp)
+  STORE x17, 17*REGBYTES(sp)
+  STORE x18, 18*REGBYTES(sp)
+  STORE x19, 19*REGBYTES(sp)
+  STORE x20, 20*REGBYTES(sp)
+  STORE x21, 21*REGBYTES(sp)
+  STORE x22, 22*REGBYTES(sp)
+  STORE x23, 23*REGBYTES(sp)
+  STORE x24, 24*REGBYTES(sp)
+  STORE x25, 25*REGBYTES(sp)
+  STORE x26, 26*REGBYTES(sp)
+  STORE x27, 27*REGBYTES(sp)
+  STORE x28, 28*REGBYTES(sp)
+  STORE x29, 29*REGBYTES(sp)
+  STORE x30, 30*REGBYTES(sp)
+  STORE x31, 31*REGBYTES(sp)
+
+  csrr a0, mcause
+  csrr a1, mepc
+  mv a2, sp
+  call handle_trap
+  csrw mepc, a0
+
+  # Remain in M-mode after mret
+  li t0, MSTATUS_MPP
+  csrs mstatus, t0
+
+  LOAD x1, 1*REGBYTES(sp)
+  LOAD x2, 2*REGBYTES(sp)
+  LOAD x3, 3*REGBYTES(sp)
+  LOAD x4, 4*REGBYTES(sp)
+  LOAD x5, 5*REGBYTES(sp)
+  LOAD x6, 6*REGBYTES(sp)
+  LOAD x7, 7*REGBYTES(sp)
+  LOAD x8, 8*REGBYTES(sp)
+  LOAD x9, 9*REGBYTES(sp)
+  LOAD x10, 10*REGBYTES(sp)
+  LOAD x11, 11*REGBYTES(sp)
+  LOAD x12, 12*REGBYTES(sp)
+  LOAD x13, 13*REGBYTES(sp)
+  LOAD x14, 14*REGBYTES(sp)
+  LOAD x15, 15*REGBYTES(sp)
+  LOAD x16, 16*REGBYTES(sp)
+  LOAD x17, 17*REGBYTES(sp)
+  LOAD x18, 18*REGBYTES(sp)
+  LOAD x19, 19*REGBYTES(sp)
+  LOAD x20, 20*REGBYTES(sp)
+  LOAD x21, 21*REGBYTES(sp)
+  LOAD x22, 22*REGBYTES(sp)
+  LOAD x23, 23*REGBYTES(sp)
+  LOAD x24, 24*REGBYTES(sp)
+  LOAD x25, 25*REGBYTES(sp)
+  LOAD x26, 26*REGBYTES(sp)
+  LOAD x27, 27*REGBYTES(sp)
+  LOAD x28, 28*REGBYTES(sp)
+  LOAD x29, 29*REGBYTES(sp)
+  LOAD x30, 30*REGBYTES(sp)
+  LOAD x31, 31*REGBYTES(sp)
+
+  addi sp, sp, 32*REGBYTES
+  mret
+
+.weak handle_trap
+handle_trap:
+1:
+  j 1b
+	
+#endif

dhrystone/bsp/env/hifive1.h

@@ -0,0 +1,81 @@
+// See LICENSE for license details.
+
+#ifndef _SIFIVE_HIFIVE1_H
+#define _SIFIVE_HIFIVE1_H
+
+#include <stdint.h>
+
+/****************************************************************************
+ * GPIO Connections
+ *****************************************************************************/
+
+// These are the GPIO bit offsets for the RGB LED on HiFive1 Board.
+// These are also mapped to RGB LEDs on the Freedom E300 Arty
+// FPGA
+// Dev Kit.
+
+#define RED_LED_OFFSET   22
+#define GREEN_LED_OFFSET 19
+#define BLUE_LED_OFFSET  21
+
+// These are the GPIO bit offsets for the differen digital pins
+// on the headers for both the HiFive1 Board and the Freedom E300 Arty FPGA Dev Kit.
+#define PIN_0_OFFSET 16
+#define PIN_1_OFFSET 17
+#define PIN_2_OFFSET 18
+#define PIN_3_OFFSET 19
+#define PIN_4_OFFSET 20
+#define PIN_5_OFFSET 21
+#define PIN_6_OFFSET 22
+#define PIN_7_OFFSET 23
+#define PIN_8_OFFSET 0
+#define PIN_9_OFFSET 1
+#define PIN_10_OFFSET 2
+#define PIN_11_OFFSET 3
+#define PIN_12_OFFSET 4
+#define PIN_13_OFFSET 5
+//#define PIN_14_OFFSET 8 //This pin is not connected on either board.
+#define PIN_15_OFFSET 9
+#define PIN_16_OFFSET 10
+#define PIN_17_OFFSET 11
+#define PIN_18_OFFSET 12
+#define PIN_19_OFFSET 13
+
+// These are *PIN* numbers, not
+// GPIO Offset Numbers.
+#define PIN_SPI1_SCK    (13u)
+#define PIN_SPI1_MISO   (12u)
+#define PIN_SPI1_MOSI   (11u)
+#define PIN_SPI1_SS0    (10u)
+#define PIN_SPI1_SS1    (14u) 
+#define PIN_SPI1_SS2    (15u)
+#define PIN_SPI1_SS3    (16u)
+
+#define SS_PIN_TO_CS_ID(x) \
+  ((x==PIN_SPI1_SS0 ? 0 :		 \
+    (x==PIN_SPI1_SS1 ? 1 :		 \
+     (x==PIN_SPI1_SS2 ? 2 :		 \
+      (x==PIN_SPI1_SS3 ? 3 :		 \
+       -1))))) 
+
+
+// These buttons are present only on the Freedom E300 Arty Dev Kit.
+#ifdef HAS_BOARD_BUTTONS
+#define BUTTON_0_OFFSET 15
+#define BUTTON_1_OFFSET 30
+#define BUTTON_2_OFFSET 31
+
+#define INT_DEVICE_BUTTON_0 (INT_GPIO_BASE + BUTTON_0_OFFSET)
+#define INT_DEVICE_BUTTON_1 (INT_GPIO_BASE + BUTTON_1_OFFSET)
+#define INT_DEVICE_BUTTON_2 (INT_GPIO_BASE + BUTTON_2_OFFSET)
+
+#endif
+
+#define HAS_HFXOSC 1
+#define HAS_LFROSC_BYPASS 1
+
+#define RTC_FREQ 32768
+
+void write_hex(int fd, uint32_t hex);
+
+#endif /* _SIFIVE_HIFIVE1_H */

dhrystone/bsp/include/sifive/devices/spi.h

@@ -0,0 +1,80 @@
+// See LICENSE for license details.
+
+#ifndef _SIFIVE_SPI_H
+#define _SIFIVE_SPI_H
+
+/* Register offsets */
+
+#define SPI_REG_SCKDIV          0x00
+#define SPI_REG_SCKMODE         0x04
+#define SPI_REG_CSID            0x10
+#define SPI_REG_CSDEF           0x14
+#define SPI_REG_CSMODE          0x18
+
+#define SPI_REG_DCSSCK          0x28
+#define SPI_REG_DSCKCS          0x2a
+#define SPI_REG_DINTERCS        0x2c
+#define SPI_REG_DINTERXFR       0x2e
+
+#define SPI_REG_FMT             0x40
+#define SPI_REG_TXFIFO          0x48
+#define SPI_REG_RXFIFO          0x4c
+#define SPI_REG_TXCTRL          0x50
+#define SPI_REG_RXCTRL          0x54
+
+#define SPI_REG_FCTRL           0x60
+#define SPI_REG_FFMT            0x64
+
+#define SPI_REG_IE              0x70
+#define SPI_REG_IP              0x74
+
+/* Fields */
+
+#define SPI_SCK_POL             0x1
+#define SPI_SCK_PHA             0x2
+
+#define SPI_FMT_PROTO(x)        ((x) & 0x3)
+#define SPI_FMT_ENDIAN(x)       (((x) & 0x1) << 2)
+#define SPI_FMT_DIR(x)          (((x) & 0x1) << 3)
+#define SPI_FMT_LEN(x)          (((x) & 0xf) << 16)
+
+/* TXCTRL register */
+#define SPI_TXWM(x)             ((x) & 0xffff)
+/* RXCTRL register */
+#define SPI_RXWM(x)             ((x) & 0xffff)
+
+#define SPI_IP_TXWM             0x1
+#define SPI_IP_RXWM             0x2
+
+#define SPI_FCTRL_EN            0x1
+
+#define SPI_INSN_CMD_EN         0x1
+#define SPI_INSN_ADDR_LEN(x)    (((x) & 0x7) << 1)
+#define SPI_INSN_PAD_CNT(x)     (((x) & 0xf) << 4)
+#define SPI_INSN_CMD_PROTO(x)   (((x) & 0x3) << 8)
+#define SPI_INSN_ADDR_PROTO(x)  (((x) & 0x3) << 10)
+#define SPI_INSN_DATA_PROTO(x)  (((x) & 0x3) << 12)
+#define SPI_INSN_CMD_CODE(x)    (((x) & 0xff) << 16)
+#define SPI_INSN_PAD_CODE(x)    (((x) & 0xff) << 24)
+
+#define SPI_TXFIFO_FULL  (1 << 31)   
+#define SPI_RXFIFO_EMPTY (1 << 31)   
+
+/* Values */
+
+#define SPI_CSMODE_AUTO         0
+#define SPI_CSMODE_HOLD         2
+#define SPI_CSMODE_OFF          3
+
+#define SPI_DIR_RX              0
+#define SPI_DIR_TX              1
+
+#define SPI_PROTO_S             0
+#define SPI_PROTO_D             1
+#define SPI_PROTO_Q             2
+
+#define SPI_ENDIAN_MSB          0
+#define SPI_ENDIAN_LSB          1
+
+
+#endif /* _SIFIVE_SPI_H */

dhrystone/bsp/libwrap/libwrap.mk

@@ -0,0 +1,54 @@
+# See LICENSE for license details.
+
+ifndef _SIFIVE_MK_LIBWRAP
+_SIFIVE_MK_LIBWRAP := # defined
+
+LIBWRAP_DIR := $(dir $(lastword $(MAKEFILE_LIST)))
+LIBWRAP_DIR := $(LIBWRAP_DIR:/=)
+
+LIBWRAP_SRCS := \
+	stdlib/malloc.c \
+	sys/open.c \
+	sys/lseek.c \
+	sys/read.c \
+	sys/write.c \
+	sys/fstat.c \
+	sys/stat.c \
+	sys/close.c \
+	sys/link.c \
+	sys/unlink.c \
+	sys/execve.c \
+	sys/fork.c \
+	sys/getpid.c \
+	sys/kill.c \
+	sys/wait.c \
+	sys/isatty.c \
+	sys/times.c \
+	sys/sbrk.c \
+	sys/_exit.c \
+	misc/write_hex.c
+
+LIBWRAP_SRCS := $(foreach f,$(LIBWRAP_SRCS),$(LIBWRAP_DIR)/$(f))
+LIBWRAP_OBJS := $(LIBWRAP_SRCS:.c=.o)
+
+LIBWRAP_SYMS := malloc free \
+	open lseek read write fstat stat close link unlink \
+	execve fork getpid kill wait \
+	isatty times sbrk _exit
+
+LIBWRAP := libwrap.a
+
+LINK_DEPS += $(LIBWRAP)
+
+LDFLAGS += $(foreach s,$(LIBWRAP_SYMS),-Wl,--wrap=$(s))
+LDFLAGS += -L. -Wl,--start-group -lwrap -lc -Wl,--end-group
+
+CLEAN_OBJS += $(LIBWRAP_OBJS)
+
+$(LIBWRAP_OBJS): %.o: %.c $(HEADERS)
+	$(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $<
+
+$(LIBWRAP): $(LIBWRAP_OBJS)
+	$(AR) rcs $@ $^
+
+endif # _SIFIVE_MK_LIBWRAP

dhrystone/bsp/libwrap/misc/write_hex.c

@@ -0,0 +1,19 @@
+/* See LICENSE of license details. */
+
+#include <stdint.h>
+#include <unistd.h>
+#include "platform.h"
+
+void write_hex(int fd, uint32_t hex)
+{
+  uint8_t ii;
+  uint8_t jj;
+  char towrite;
+  write(fd , "0x", 2);
+  for (ii = 8 ; ii > 0; ii--) {
+    jj = ii - 1;
+    uint8_t digit = ((hex & (0xF << (jj*4))) >> (jj*4));
+    towrite = digit < 0xA ? ('0' + digit) : ('A' +  (digit - 0xA));
+    write(fd, &towrite, 1);
+  }
+}

dhrystone/bsp/libwrap/sys/_exit.c

@@ -0,0 +1,17 @@
+/* See LICENSE of license details. */
+
+#include <unistd.h>
+#include "platform.h"
+
+void __wrap__exit(int code)
+{
+//volatile uint32_t* leds = (uint32_t*) (GPIO_BASE_ADDR + GPIO_OUT_OFFSET);
+  const char message[] = "\nProgam has exited with code:";
+//*leds = (~(code));
+
+  write(STDERR_FILENO, message, sizeof(message) - 1);
+  write_hex(STDERR_FILENO, code);
+  write(STDERR_FILENO, "\n", 1);
+
+  for (;;);
+}