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				@@ -1,149 +1,143 @@
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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 <stdint.h>
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				#include <string.h>
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				#include <sys/types.h>
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				#include "semihosting.h"
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				#define SEMIHOSTING_SYS_OPEN            0x01
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				#define SEMIHOSTING_SYS_CLOSE           0x02
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				#define SEMIHOSTING_SYS_WRITEC          0x03
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				#define SEMIHOSTING_SYS_WRITE0          0x04
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				#define SEMIHOSTING_SYS_WRITE           0x05
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				#define SEMIHOSTING_SYS_READ            0x06
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				#define SEMIHOSTING_SYS_READC           0x07
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				#define SEMIHOSTING_SYS_ISERROR         0x08
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				#define SEMIHOSTING_SYS_ISTTY           0x09
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				#define SEMIHOSTING_SYS_SEEK            0x0A
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				#define SEMIHOSTING_SYS_FLEN            0x0C
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				#define SEMIHOSTING_SYS_TMPNAM          0x0D
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				#define SEMIHOSTING_SYS_REMOVE          0x0E
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				#define SEMIHOSTING_SYS_RENAME          0x0F
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				#define SEMIHOSTING_SYS_CLOCK           0x10
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				#define SEMIHOSTING_SYS_TIME            0x11
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				#define SEMIHOSTING_SYS_SYSTEM          0x12
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				#define SEMIHOSTING_SYS_ERRNO           0x13
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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_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 SEMIHOSTING_SYS_OPEN 0x01
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				#define SEMIHOSTING_SYS_CLOSE 0x02
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				#define SEMIHOSTING_SYS_WRITEC 0x03
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				#define SEMIHOSTING_SYS_WRITE0 0x04
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				#define SEMIHOSTING_SYS_WRITE 0x05
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				#define SEMIHOSTING_SYS_READ 0x06
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				#define SEMIHOSTING_SYS_READC 0x07
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				#define SEMIHOSTING_SYS_ISERROR 0x08
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				#define SEMIHOSTING_SYS_ISTTY 0x09
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				#define SEMIHOSTING_SYS_SEEK 0x0A
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				#define SEMIHOSTING_SYS_FLEN 0x0C
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				#define SEMIHOSTING_SYS_TMPNAM 0x0D
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				#define SEMIHOSTING_SYS_REMOVE 0x0E
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				#define SEMIHOSTING_SYS_RENAME 0x0F
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				#define SEMIHOSTING_SYS_CLOCK 0x10
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				#define SEMIHOSTING_SYS_TIME 0x11
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				#define SEMIHOSTING_SYS_SYSTEM 0x12
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				#define SEMIHOSTING_SYS_ERRNO 0x13
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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_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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				  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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				  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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				    size_t len;
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				  char *path;
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				  size_t len;
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				} RemoveVector;
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				typedef struct{
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				    int fd;
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				    off_t pos;
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				typedef struct {
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				  int fd;
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				  off_t pos;
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				} SeekVector;
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				static inline int __attribute__ ((always_inline)) call_host(int reason, void* arg) {
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				static inline int __attribute__((always_inline))
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				call_host(int reason, void *arg) {
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				#if 1
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				    // This must always be set back to 0 to cover the case where a host wasn't
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				    // initially present, but only connected while the program was already up and
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				    // running. In that case, trap() suddenly won't be called anymore, so we have to
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				    // clear this variable *before* EBREAK is called.
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				    sh_missing_host = 0;
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				  // This must always be set back to 0 to cover the case where a host wasn't
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				  // initially present, but only connected while the program was already up and
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				  // running. In that case, trap() suddenly won't be called anymore, so we have
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				  // to clear this variable *before* EBREAK is called.
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				  sh_missing_host = 0;
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				    register int value asm ("a0") = reason;
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				    register void* ptr asm ("a1") = arg;
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				    asm volatile (
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				        // Workaround for RISC-V lack of multiple EBREAKs.
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				        " .option push \n"
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				        " .option norvc \n"
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				        // Force 16-byte alignment to make sure that the 3 instruction fall
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				        // within the same virtual page. If you the instruction straddle a page boundary
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				        // the debugger fetching the instructions could lead to a page fault.
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				        // Note: align 4 means, align by 2 to the power of 4!
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				        " .align 4 \n"
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				        " slli x0, x0, 0x1f \n"
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				        " ebreak \n"
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				        " srai x0, x0, 0x07 \n"
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				        " .option pop \n"
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				  register int value asm("a0") = reason;
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				  register void *ptr asm("a1") = arg;
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				  asm volatile(
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				      // Workaround for RISC-V lack of multiple EBREAKs.
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				      " .option push \n"
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				      " .option norvc \n"
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				      // Force 16-byte alignment to make sure that the 3 instruction fall
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				      // within the same virtual page. If you the instruction straddle a page
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				      // boundary the debugger fetching the instructions could lead to a page
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				      // fault. Note: align 4 means, align by 2 to the power of 4!
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				      " .align 4 \n"
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				      " slli x0, x0, 0x1f \n"
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				      " ebreak \n"
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				      " srai x0, x0, 0x07 \n"
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				      " .option pop \n"
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				        : "=r" (value) /* Outputs */
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				        : "0" (value), "r" (ptr), [swi] "i" (RISCV_SEMIHOSTING_CALL_NUMBER) /* Inputs */
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				        : "memory" /* Clobbers */
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				    );
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				    return value;
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				      : "=r"(value) /* Outputs */
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				      : "0"(value),
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				        "r"(ptr), [swi] "i"(RISCV_SEMIHOSTING_CALL_NUMBER) /* Inputs */
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				      : "memory"                                           /* Clobbers */
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				  );
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				  return value;
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				#else
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				    return 0;    
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				  return 0;
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				#endif
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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_errno(void) { return call_host(SEMIHOSTING_SYS_ERRNO, (void *)NULL); }
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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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				int sh_time(void) { return call_host(SEMIHOSTING_SYS_TIME, (void *)NULL); }
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				int sh_remove(char* path) {
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				    size_t 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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				int sh_remove(char *path) {
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				  size_t 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_seek(int file_handle, off_t pos) {
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				    SeekVector vec = {file_handle, pos};
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				    call_host(SEMIHOSTING_SYS_SEEK, &vec);
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				    return;
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				  SeekVector vec = {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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			 | 
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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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			 | 
			 | 
			
				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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			 | 
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				  call_host(SEMIHOSTING_SYS_WRITE, &vec);
 | 
			
		
		
	
		
			
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				  return;
 | 
			
		
		
	
		
			
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				}
 | 
			
		
		
	
		
			
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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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				  return call_host(SEMIHOSTING_SYS_CLOSE, file_handle);
 | 
			
		
		
	
		
			
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				}
 | 
			
		
		
	
		
			
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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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				  call_host(SEMIHOSTING_SYS_EXIT, (void *)NULL);
 | 
			
		
		
	
		
			
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				  return;
 | 
			
		
		
	
		
			
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				}
 | 
			
		
		
	
		
			
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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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				  call_host(SEMIHOSTING_SYS_EXIT_EXTENDED, (void *)NULL);
 | 
			
		
		
	
		
			
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				  return;
 | 
			
		
		
	
		
			
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				}
 | 
			
		
		
	
		
			
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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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				  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_iserror(int num) { return call_host(SEMIHOSTING_SYS_ISERROR, num); }
 | 
			
		
		
	
		
			
				 | 
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 | 
			
		
		
	
		
			
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				int sh_istty(int file_handle) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    return call_host(SEMIHOSTING_SYS_ISTTY, file_handle);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  return call_host(SEMIHOSTING_SYS_ISTTY, file_handle);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				}
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				/*
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				int sh_remove(char* path) {
 | 
			
		
		
	
	
		
			
				
					
					| 
						
					 | 
				
			
			 | 
			 | 
			
				@@ -152,51 +146,47 @@ int sh_remove(char* path) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    return call_host(SEMIHOSTING_SYS_REMOVE, &vec);
 | 
			
		
		
	
		
			
				 | 
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			 | 
			 | 
			
				}*/
 | 
			
		
		
	
		
			
				 | 
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 | 
			
		
		
	
		
			
				 | 
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			 | 
			 | 
			
				void sh_rename(char* old, char* new) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    int old_len = strlen(old);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    int new_len = strlen(new);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    RenameVector vec = {old, old_len, new, new_len};
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    call_host(SEMIHOSTING_SYS_RENAME, &vec);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    return;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				void sh_rename(char *old, char *new) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  int old_len = strlen(old);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  int new_len = strlen(new);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  RenameVector vec = {old, old_len, new, new_len};
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  call_host(SEMIHOSTING_SYS_RENAME, &vec);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  return;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				}
 | 
			
		
		
	
		
			
				 | 
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 | 
			
		
		
	
		
			
				 | 
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			 | 
			 | 
			
				void sh_write0(const char* buf)
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				{
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    // Print zero-terminated string
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    call_host(SEMIHOSTING_SYS_WRITE0, (void*) buf);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				void sh_write0(const char *buf) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  // Print zero-terminated string
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  call_host(SEMIHOSTING_SYS_WRITE0, (void *)buf);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				}
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				void sh_writec(char c)
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				{
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    // Print single character
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    call_host(SEMIHOSTING_SYS_WRITEC, (void*)&c);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				void sh_writec(char c) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  // Print single character
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  call_host(SEMIHOSTING_SYS_WRITEC, (void *)&c);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				}
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				char sh_readc(void)
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				{
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    // Read character from keyboard. (Blocking operation!)
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    char c = call_host(SEMIHOSTING_SYS_READC, (void*)NULL);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    return c;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				char sh_readc(void) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  // Read character from keyboard. (Blocking operation!)
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  char c = call_host(SEMIHOSTING_SYS_READC, (void *)NULL);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  return c;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				}
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				int sh_open(char* str, int mode) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    //mode = 0;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    //int length = 44;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    size_t length = strlen(str);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    OpenVector vec = {str, mode, length};
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    return call_host(SEMIHOSTING_SYS_OPEN, &vec);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				int sh_open(char *str, int mode) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  // mode = 0;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  // int length = 44;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  size_t length = strlen(str);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  OpenVector vec = {str, mode, length};
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  return call_host(SEMIHOSTING_SYS_OPEN, &vec);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				}
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				void sh_read(char* buf, int file_handle, size_t length) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    OpenVector vec = {buf, file_handle, length};
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    int i = call_host(SEMIHOSTING_SYS_READ, &vec);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    return i;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				int sh_read(char *buf, int file_handle, size_t length) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  OpenVector vec = {buf, file_handle, length};
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  int i = call_host(SEMIHOSTING_SYS_READ, &vec);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  return i;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				}
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				int sh_clock(void)
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				{
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    int clock = call_host(SEMIHOSTING_SYS_CLOCK, (void*)NULL);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				    return clock;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				int sh_clock(void) {
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  int clock = call_host(SEMIHOSTING_SYS_CLOCK, (void *)NULL);
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				  return clock;
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				}
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				
 | 
			
		
		
	
		
			
				 | 
				 | 
			
			 | 
			 | 
			
				/*
 | 
			
		
		
	
	
		
			
				
					
					| 
						
					 | 
				
			
			 | 
			 | 
			
				 
 |