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typedef struct {
bool modify;
bool bad;
} void;
typedef struct tc {
uintptr_t pc_patch_start;
uintptr_t pc_patch_end;
uintptr_t pc;
int op_size;
uint32_t op;
uint32_t newop;
uint32_t newval[4];
} *tdis_ctx;
NOINLINE UNUSED
static void P_data(struct tc *ctx, unsigned o0, unsigned o1, unsigned o2, unsigned o3, unsigned out_mask) {
/
if (((o0 | o1 | o2 | o3) & (MAX_REGS - 1)) == (MAX_REGS - 1)) {
__builtin_abort();
}
NOINLINE UNUSED
static void P_pcrel(struct tc *ctx, uintptr_t dpc, unsigned reg, bool is_load) {
__builtin_abort();
}
NOINLINE UNUSED
static void P_ret(struct tc *ctx) {
/* ret is okay if it's at the end of the patch */
if (ctx->pc + ctx->op_size >= ctx->pc_patch_end)
return (void) {0};
else
return (void) {.bad = true};
}
NOINLINE UNUSED
static void P_branch(struct tc *ctx, uintptr_t dpc) {
if (dpc >= ctx->pc_patch_start && dpc < ctx->pc_patch_end) {
/* don't support this for now */
return (void) {.bad = true};
}
/* branch out of bounds is fine */
return (void) {0};
}
NOINLINE UNUSED
static void P_unidentified(struct tc *ctx) {
/* this isn't exhaustive, so unidentified is fine */
return (void) {0};
}
NOINLINE UNUSED
static void P_bad(struct tc *ctx) {
return (void) {.bad = true};
}
#define P(x) transform_dis_##x
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