Adding semihosting support for bmsp
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39ee91af7d
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@ -27,6 +27,7 @@ SET(LIBWRAP_SRCS
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${LIBWRAP_DIR}/sys/_exit.c
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${LIBWRAP_DIR}/misc/write_hex.c
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${LIBWRAP_DIR}/sys/printf.c
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${LIBWRAP_DIR}/sys/puts.c
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)
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IF(${SEMIHOSTING})
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SET(LIBWRAP_SRCS ${LIBWRAP_SRCS} ${LIBWRAP_DIR}/semihosting/semihosting.c ${LIBWRAP_DIR}/semihosting/trap.c)
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@ -49,6 +50,6 @@ FOREACH(SYM ${LIBWRAP_SYMS})
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LIST(APPEND WRAP_LDFLAGS "-Wl,--wrap=${SYM}")
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ENDFOREACH()
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SET(LIBWRAP_TGC_LDFLAGS ${WRAP_LDFLAGS} "-Wl,--start-group" "-Wl,--end-group")
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SET(LIBWRAP_TGC_LDFLAGS ${WRAP_LDFLAGS} "-Wl,--start-group" "-Wl,--end-group" "-L. -lLIBWRAP_TGC")
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ENDIF(NOT DEFINED _MK_LIBWRAP)
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@ -1,6 +1,7 @@
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#include <stdint.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <string.h>
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#include "semihosting.h"
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@ -25,12 +26,31 @@
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#define SEMIHOSTING_SYS_GET_CMDLINE 0x15
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#define SEMIHOSTING_SYS_HEAPINFO 0x16
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#define SEMIHOSTING_EnterSVC 0x17
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#define SEMIHOSTING_ReportException 0x18
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#define SEMIHOSTING_SYS_EXIT 0x18
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#define SEMIHOSTING_SYS_EXIT_EXTENDED 0x20
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#define SEMIHOSTING_SYS_ELAPSED 0x30
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#define SEMIHOSTING_SYS_TICKFREQ 0x31
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#define RISCV_SEMIHOSTING_CALL_NUMBER 7
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/*typedef struct {
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char* str;
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int mode;
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size_t length;
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} OpenVector;
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typedef struct {
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char* old;
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int old_len;
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char* new;
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int new_len;
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} RenameVector;
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typedef struct {
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char* path;
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int len;
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} RemoveVector;
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*/
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static inline int __attribute__ ((always_inline)) call_host(int reason, void* arg) {
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#if 1
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@ -66,6 +86,71 @@ static inline int __attribute__ ((always_inline)) call_host(int reason, void* ar
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#endif
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}
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/*
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int sh_errno(void) {
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return call_host(SEMIHOSTING_SYS_ERRNO, (void*)NULL);
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}
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int sh_time(void) {
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return call_host(SEMIHOSTING_SYS_TIME, (void*)NULL);
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}
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void sh_seek(int file_handle, int pos) {
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int vec[2] = {file_handle, pos};
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call_host(SEMIHOSTING_SYS_SEEK, &vec);
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return;
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}
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void sh_write(char* str, int file_handle) {
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size_t length = strlen(str);
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OpenVector vec = {str, file_handle, length};
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call_host(SEMIHOSTING_SYS_WRITE, &vec);
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return;
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}
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int sh_close(int file_handle) {
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return call_host(SEMIHOSTING_SYS_CLOSE, file_handle);
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}
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void sh_exit(void) {
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call_host(SEMIHOSTING_SYS_EXIT, (void*)NULL);
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return;
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}
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void sh_exit_extended(void) {
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call_host(SEMIHOSTING_SYS_EXIT_EXTENDED, (void*)NULL);
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return;
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}
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int sh_flen(int file_handle) {
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return call_host(SEMIHOSTING_SYS_FLEN, file_handle);
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}
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int sh_iserror(int num) {
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return call_host(SEMIHOSTING_SYS_ISERROR, num);
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}
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int sh_istty(int file_handle) {
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return call_host(SEMIHOSTING_SYS_ISTTY, file_handle);
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}
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int sh_remove(char* path) {
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int len = strlen(path);
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RemoveVector vec = {path, len};
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return call_host(SEMIHOSTING_SYS_REMOVE, &vec);
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}
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void sh_rename(char* old, char* new) {
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int old_len = strlen(old);
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int new_len = strlen(new);
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RenameVector vec = {old, old_len, new, new_len};
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call_host(SEMIHOSTING_SYS_RENAME, &vec);
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return;
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}
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void sh_write0(const char* buf)
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{
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// Print zero-terminated string
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@ -82,9 +167,26 @@ char sh_readc(void)
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{
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// Read character from keyboard. (Blocking operation!)
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char c = call_host(SEMIHOSTING_SYS_READC, (void*)NULL);
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return c;
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}
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if (sh_missing_host)
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return 0;
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else
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return c;
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int sh_open(char* str, int mode) {
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//mode = 0;
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//int length = 44;
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size_t length = strlen(str);
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OpenVector vec = {str, mode, length};
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int i = call_host(SEMIHOSTING_SYS_OPEN, &vec);
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return i;
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}
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void sh_read(char* buf, int file_handle, size_t length) {
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OpenVector vec = {buf, file_handle, length};
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int i = call_host(SEMIHOSTING_SYS_READ, &vec);
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return i;
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} */
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int sh_clock(void)
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{
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int clock = call_host(SEMIHOSTING_SYS_CLOCK, (void*)NULL);
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return clock;
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}
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@ -6,6 +6,20 @@
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void sh_write0(const char* buf);
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void sh_writec(char c);
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char sh_readc(void);
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int sh_clock(void);
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void sh_read(char*, int, size_t);
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void sh_write(char*, int);
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int sh_open(char*, int);
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void sh_rename(char*, char*);
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int sh_remove(char*);
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int sh_istty(int);
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int sh_iserror(int);
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int sh_flen(int);
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void sh_exit(void);
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void sh_exit_extended(void);
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int sh_close(int);
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int sh_time(void);
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int sh_errno(void);
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int getchar(void);
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@ -13,7 +13,7 @@
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int sh_missing_host = 0;
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void trap()
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{
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{ //ToDo: Check why macro CSR_MEPC and others are not resolved
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uint32_t mepc = read_csr(0x341); // Address of trap
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uint32_t mtval = read_csr(0x343); // Instruction value of trap
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uint32_t mcause = read_csr(0x342); // Reason for the trap
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@ -3,6 +3,7 @@
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#include <unistd.h>
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#include "platform.h"
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#include "weak_under_alias.h"
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#include "semihosting.h"
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#if defined(BOARD_hifive1)
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static volatile uint32_t tohost;
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@ -16,6 +17,10 @@ void write_hex(int fd, uint32_t hex);
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void __wrap_exit(int code)
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{
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#if defined(SEMIHOSTING)
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sh_exit();
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return;
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#endif
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//volatile uint32_t* leds = (uint32_t*) (GPIO_BASE_ADDR + GPIO_OUT_OFFSET);
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const char message[] = "\nProgam has exited with code:";
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//*leds = (~(code));
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@ -3,9 +3,14 @@
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#include <errno.h>
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#include "stub.h"
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#include "weak_under_alias.h"
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#include "semihosting.h"
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int __wrap_close(int fd)
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{
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#if defined(SEMIHOTING)
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int i = sh_close(fd);
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return i;
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#endif
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return _stub(EBADF);
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}
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@ -2,9 +2,14 @@
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#include <unistd.h>
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#include "weak_under_alias.h"
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#include "semihosting.h"
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int __wrap_isatty(int fd)
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{
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#if defined(SEMIHOSTING)
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int i = sh_istty(fd);
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return i;
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#endif
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if (fd == STDOUT_FILENO || fd == STDERR_FILENO)
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return 1;
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@ -5,9 +5,16 @@
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#include <sys/types.h>
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#include "stub.h"
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#include "weak_under_alias.h"
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#include "semihosting.h"
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off_t __wrap_lseek(int fd, off_t ptr, int dir)
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{
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#if defined(SEMIHOSTING)
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if(sh_istty(fd))
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return 0;
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sh_seek();
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return ptr;
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#endif
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if (isatty(fd))
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return 0;
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@ -3,9 +3,14 @@
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#include <errno.h>
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#include "stub.h"
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#include "weak_under_alias.h"
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#include "semihosting.h"
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int __wrap_open(const char* name, int flags, int mode)
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{
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#if defined(SEMIHOSTING)
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int fd = sh_open(name, mode);
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return fd;
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#endif
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return _stub(ENOENT);
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}
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weak_under_alias(open);
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@ -7,6 +7,7 @@
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#include <stdint.h>
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#include <string.h>
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#include <unistd.h>
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#include "semihosting.h"
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#undef putchar
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int putchar(int ch)
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@ -114,7 +115,11 @@ static void vprintfmt(void (*putch)(int, void**), void **putdat, const char *fmt
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if (ch == '\0')
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return;
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fmt++;
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#if defined(SEMIHOSTING)
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sh_writec(ch);
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#else
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putch(ch, putdat);
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#endif
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}
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fmt++;
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@ -8,9 +8,14 @@
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#include "platform.h"
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#include "stub.h"
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#include "weak_under_alias.h"
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#include "semihosting.h"
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int __wrap_puts(const char *s)
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{
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#if defined(SEMIHOSTING)
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sh_write0(s);
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return 0;
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#endif
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while (*s != '\0') {
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#if defined(BOARD_ehrenberg)
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while (uart_get_tx_free(uart)==0) ;
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@ -10,10 +10,15 @@
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#include "platform.h"
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#include "stub.h"
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#include "weak_under_alias.h"
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#include "semihosting.h"
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ssize_t __wrap_read(int fd, void* ptr, size_t len)
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{
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uint8_t * current = (uint8_t *)ptr;
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#if defined(SEMIHOSTING)
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sh_read(current, fd, len);
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return;
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#endif
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#if defined(BOARD_hifive1)
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volatile uint32_t * uart_rx = (uint32_t *)(UART0_CTRL_ADDR + UART_REG_RXFIFO);
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volatile uint8_t * uart_rx_cnt = (uint8_t *)(UART0_CTRL_ADDR + UART_REG_RXCTRL + 2);
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@ -3,9 +3,13 @@
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#include <errno.h>
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#include "stub.h"
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#include "weak_under_alias.h"
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#include "semihosting.h"
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int __wrap_unlink(const char* name)
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{
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#if defined(SEMIHOSTING)
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return sh_remove(name);
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#endif
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return _stub(ENOENT);
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}
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weak_under_alias(unlink);
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@ -8,10 +8,15 @@
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#include "platform.h"
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#include "stub.h"
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#include "weak_under_alias.h"
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#include "semihosting.h"
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ssize_t __wrap_write(int fd, const void* ptr, size_t len)
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{
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const uint8_t * current = (const uint8_t *)ptr;
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#if defined(SEMIHOSTING)
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sh_write(current, fd);
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return len;
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#endif
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if (isatty(fd)) {
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for (size_t jj = 0; jj < len; jj++) {
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#if defined(BOARD_ehrenberg)
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