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poke.c File Reference

#include <stdio.h>
#include <smem.h>

Include dependency graph for poke.c:

Go to the source code of this file.

Defines
#define	NAME   "RAM"
Functions
void *	ram_get (char *name, long int base, long int size)
void	ram_free (char *name, long int base)
int	main (int argc, char **argv)

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Define Documentation

#define NAME   "RAM"

Definition at line 5 of file poke.c.

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Function Documentation

void* ram_get (  char *    name, long int    base, long int    size )

Definition at line 7 of file poke.c. Referenced by main(). { void *ram; /* remove any previous defs of phys mem */ smem_remove(name); if ((ram = (void *) smem_create(name, (char *) base, size, SM_READ | SM_WRITE)) == NULL) { perror("can't get physical memory"); return (void *) 0; } return ram; }

void ram_free (  char *    name, long int    base )

Definition at line 24 of file poke.c. Referenced by main(). { smem_create("", (char *) base, (long int) 0, SM_DETACH); smem_remove(name); }

int main (  int    argc, char **    argv )

Definition at line 30 of file poke.c. { int value; long int addr; void *ram; static char syntax[] = "syntax: %s <addr> <value>\n"; if (argc != 3) { printf(syntax, argv[0]); exit(1); } if (sscanf(argv[1], "%x", &addr) != 1) { printf(syntax, argv[0]); exit(1); } if (sscanf(argv[2], "%x", &value) != 1) { printf(syntax, argv[0]); exit(1); } /* get RAM */ ram = ram_get(NAME, addr, sizeof(int)); /* write the value */ *((char *) ram) = value; printf("wrote %X to %X\n", (int) *((char *) ram), addr); ram_free(NAME, addr); return 0; }

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