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Ugly workaround for syscall resolution on x86-32

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This commit is contained in:
pancake 2017-08-11 16:24:19 +02:00
parent fe287c3850
commit a9ab7ed6aa
1 changed files with 10 additions and 5 deletions
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15
libr/core/cmd_anal.c
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@ -1023,9 +1023,15 @@ R_API char *cmd_syscall_dostr(RCore *core, int n) {
}
res = r_str_appendf (res, "%d = %s (", item->num, item->name);
// TODO: move this to r_syscall
//TODO replace the hardcoded CC with the sdb ones
for (i = 0; i < item->args; i++) {
//TODO replace the hardcoded CC with the sdb ones
ut64 arg = r_debug_arg_get (core->dbg, R_ANAL_CC_TYPE_FASTCALL, i);
// XXX this is a hack to make syscall args work on x86-32 and x86-64
// we need to shift sn first.. which is bad, but needs to be redesigned
int regidx = i;
if (core->assembler->bits == 32) {
regidx++;
}
ut64 arg = r_debug_arg_get (core->dbg, R_ANAL_CC_TYPE_FASTCALL, regidx);
//r_cons_printf ("(%d:0x%"PFMT64x")\n", i, arg);
if (item->sargs) {
switch (item->sargs[i]) {
@ -1036,9 +1042,8 @@ R_API char *cmd_syscall_dostr(RCore *core, int n) {
res = r_str_appendf (res, "%" PFMT64d "", arg);
break;
case 'z':
r_io_read_at (core->io, arg, (ut8 *)str, sizeof (str));
// TODO: filter zero terminated string
str[63] = '\0';
memset (str, 0, sizeof (str));
r_io_read_at (core->io, arg, (ut8 *)str, sizeof (str) - 1);
r_str_filter (str, strlen (str));
res = r_str_appendf (res, "\"%s\"", str);
break;