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gsplus
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fix relative calculation.

This commit is contained in:
Kelvin Sherlock 2019-04-14 18:32:12 -04:00
parent 79df8bf62e
commit c22c517214
1 changed files with 13 additions and 14 deletions
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27
src/debug_miniasm.re2c
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@ -663,8 +663,7 @@ static int parse_line(const char *cp, uint32_t *pc) {
return 0;
}
/* address ... */
cookie.pc = *pc;
cookie.pc = addr;
cp = parse_opcode(cp, &cookie);
@ -673,7 +672,7 @@ static int parse_line(const char *cp, uint32_t *pc) {
if (*cp) {
parse_operand(cp, &cookie);
cp = parse_operand(cp, &cookie);
if (!cp) return error(offset, "bad operand");
//offset = cp - start;
}
@ -684,29 +683,29 @@ static int parse_line(const char *cp, uint32_t *pc) {
/* clean up relative */
if (cookie.mode == RELATIVE) {
int pc = (cookie.pc + 1 + cookie.size) & 0xffff;
int tmp = (int16_t)(cookie.operand & 0xffff);
int pc = (addr + 1 + cookie.size) & 0xffff;
int tmp = cookie.operand & 0xffff;
int offset = tmp - pc;
if (cookie.size == 1) {
if (tmp < -128 || tmp > 127) return error(offset, "out of range");
tmp &= 0xff;
if (offset < -128 || offset > 127) return error(offset, "out of range");
offset &= 0xff;
}
else tmp &= 0xffff;
cookie.operand = tmp;
else offset &= 0xffff;
cookie.operand = offset;
}
set_memory_c(addr, cookie.opcode, 0);
unsigned operand = cookie.operand;
set_memory_c(addr++, cookie.opcode, 0);
unsigned operand = cookie.operand;
for (i = 0; i < cookie.size; ++i) {
set_memory_c(addr, operand & 0xff, 0);
set_memory_c(addr++, operand & 0xff, 0);
operand >>= 8;
}
fputs("\r\x1b[A\x1b[K", stdout);
do_list(addr, 1);
*pc = addr + 1 + cookie.size;
do_list(cookie.pc, 1);
*pc = addr;
return 1;
}