diff options
Diffstat (limited to 'risu_i386.c')
| -rw-r--r-- | risu_i386.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/risu_i386.c b/risu_i386.c index 2d2f325..06d95e5 100644 --- a/risu_i386.c +++ b/risu_i386.c @@ -25,12 +25,37 @@ static int insn_is_ud2(uint32_t insn) void advance_pc(void *vuc) { - /* We assume that this is either UD1 or UD2. - * This would need tweaking if we want to test - * expected undefs on x86. + ucontext_t *uc = (ucontext_t *) vuc; + + /* + * We assume that this is UD1 as per get_risuop below. + * This would need tweaking if we want to test expected undefs. */ - ucontext_t *uc = vuc; - uc->uc_mcontext.gregs[REG_EIP] += 2; + uc->uc_mcontext.gregs[REG_E(IP)] += 3; +} + +void set_ucontext_paramreg(void *vuc, uint64_t value) +{ + ucontext_t *uc = (ucontext_t *) vuc; + uc->uc_mcontext.gregs[REG_E(AX)] = value; +} + +uint64_t get_reginfo_paramreg(struct reginfo *ri) +{ + return ri->gregs[REG_E(AX)]; +} + +int get_risuop(struct reginfo *ri) +{ + if ((ri->faulting_insn & 0xf8ffff) == 0xc0b90f) { /* UD1 %xxx,%eax */ + return (ri->faulting_insn >> 16) & 7; + } + return -1; +} + +uintptr_t get_pc(struct reginfo *ri) +{ + return ri->gregs[REG_E(IP)]; } int send_register_info(int sock, void *uc) |