static int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint32_t *buf)
{
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
MIPS32_SW(8, 0, 15), /* sw $8,($15) */
MIPS32_SW(9, 0, 15), /* sw $9,($15) */
MIPS32_SW(10, 0, 15), /* sw $10,($15) */
MIPS32_SW(11, 0, 15), /* sw $11,($15) */
MIPS32_LUI(8, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
MIPS32_ORI(8, 8, LOWER16(MIPS32_PRACC_PARAM_IN)),
MIPS32_LW(9, 0, 8), /* $9 = mem[$8]; read addr */
MIPS32_LW(10, 4, 8), /* $10 = mem[$8 + 4]; read count */
MIPS32_LUI(11, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */
MIPS32_ORI(11, 11, LOWER16(MIPS32_PRACC_PARAM_OUT)),
/* loop: */
MIPS32_BEQ(0, 10, 8), /* beq 0, $10, end */
MIPS32_NOP,
MIPS32_LW(8, 0, 9), /* lw $8,0($9), Load $8 with the word @mem[$9] */
MIPS32_SW(8, 0, 11), /* sw $8,0($11) */
MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */
MIPS32_ADDI(9, 9, 4), /* $1 += 4 */
MIPS32_ADDI(11, 11, 4), /* $11 += 4 */
MIPS32_B(NEG16(8)), /* b loop */
MIPS32_NOP,
/* end: */
MIPS32_LW(11, 0, 15), /* lw $11,($15) */
MIPS32_LW(10, 0, 15), /* lw $10,($15) */
MIPS32_LW(9, 0, 15), /* lw $9,($15) */
MIPS32_LW(8, 0, 15), /* lw $8,($15) */
MIPS32_B(NEG16(27)), /* b start */
MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
};
int retval = ERROR_OK;
int blocksize;
int wordsread;
uint32_t param_in[2];
wordsread = 0;
while (count > 0) {
blocksize = count;
if (count > 0x400)
blocksize = 0x400;
param_in[0] = addr;
param_in[1] = blocksize;
retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
ARRAY_SIZE(param_in), param_in, blocksize, &buf[wordsread], 1);
if (retval != ERROR_OK)
return retval;
count -= blocksize;
addr += blocksize*sizeof(uint32_t);
wordsread += blocksize;
}
return retval;
}
int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint8_t *buf)
{
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
MIPS32_SW(8,0,15), /* sw $8,($15) */
MIPS32_SW(9,0,15), /* sw $9,($15) */
MIPS32_SW(10,0,15), /* sw $10,($15) */
MIPS32_SW(11,0,15), /* sw $11,($15) */
MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
MIPS32_LW(9,0,8), /* $9 = mem[$8]; read addr */
MIPS32_LW(10,4,8), /* $10 = mem[$8 + 4]; read count */
MIPS32_LUI(11,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */
MIPS32_ORI(11,11,LOWER16(MIPS32_PRACC_PARAM_OUT)),
/* loop: */
MIPS32_BEQ(0,10,8), /* beq 0, $10, end */
MIPS32_NOP,
MIPS32_LBU(8,0,9), /* lw $8,0($9), Load t4 with the byte @mem[t1] */
MIPS32_SW(8,0,11), /* sw $8,0($11) */
MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
MIPS32_ADDI(9,9,1), /* $9 += 1 */
MIPS32_ADDI(11,11,4), /* $11 += 4 */
MIPS32_B(NEG16(8)), /* b loop */
MIPS32_NOP,
/* end: */
MIPS32_LW(11,0,15), /* lw $11,($15) */
MIPS32_LW(10,0,15), /* lw $10,($15) */
MIPS32_LW(9,0,15), /* lw $9,($15) */
MIPS32_LW(8,0,15), /* lw $8,($15) */
MIPS32_B(NEG16(27)), /* b start */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
};
/* TODO remove array */
uint32_t *param_out = malloc(count * sizeof(uint32_t));
int i;
// int retval;
int blocksize;
int bytesread;
uint32_t param_in[2];
bytesread = 0;
// while (count > 0)
{
blocksize = count;
if (count > 0x400)
blocksize = 0x400;
param_in[0] = addr;
param_in[1] = blocksize;
mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
ARRAY_SIZE(param_in), param_in, count, param_out, 1);
// count -= blocksize;
// addr += blocksize;
// bytesread += blocksize;
}
for (i = 0; i < count; i++)
{
buf[i] = param_out[i];
}
free(param_out);
return ERROR_OK;
}
