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8283519: Hsdis with capstone should annotate output

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Reviewed-by: jvernee
This commit is contained in:
Daniel Jeliński 2022-03-24 07:53:14 +00:00
parent e6f707aa76
commit a35afe84c3
1 changed files with 42 additions and 1 deletions

43
src/utils/hsdis/capstone/hsdis-capstone.c

@ -61,6 +61,26 @@ typedef decode_instructions_printf_callback_ftype printf_callback_t;
#define print(...) (*printf_callback) (printf_stream, __VA_ARGS__)
static void* null_event_callback(void* ignore_stream, const char* ignore_event, void* arg) {
return NULL;
}
/* print all events as XML markup */
static void* xml_event_callback(void* stream, const char* event, void* arg) {
FILE* fp = (FILE*) stream;
#define NS_PFX "dis:"
if (event[0] != '/') {
/* issue the tag, with or without a formatted argument */
fprintf(fp, "<"NS_PFX);
fprintf(fp, event, arg);
fprintf(fp, ">");
} else {
++event; /* skip slash */
fprintf(fp, "</"NS_PFX"%s>", event);
}
return NULL;
}
#ifdef _WIN32
__declspec(dllexport)
#endif
@ -74,6 +94,21 @@ void* decode_instructions_virtual(uintptr_t start_va, uintptr_t end_va,
int newline /* bool value for nice new line */) {
csh cs_handle;
if (printf_callback == NULL) {
int (*fprintf_callback)(FILE*, const char*, ...) = &fprintf;
FILE* fprintf_stream = stdout;
printf_callback = (printf_callback_t) fprintf_callback;
if (printf_stream == NULL)
printf_stream = (void*) fprintf_stream;
}
if (event_callback == NULL) {
if (event_stream == NULL)
event_callback = &null_event_callback;
else
event_callback = &xml_event_callback;
}
if (cs_open(CAPSTONE_ARCH, CAPSTONE_MODE, &cs_handle) != CS_ERR_OK) {
print("Could not open cs_handle");
return NULL;
@ -86,7 +121,13 @@ void* decode_instructions_virtual(uintptr_t start_va, uintptr_t end_va,
size_t count = cs_disasm(cs_handle, buffer, length, (uintptr_t) buffer, 0 , &insn);
if (count) {
for (unsigned int j = 0; j < count; j++) {
print(" 0x%" PRIx64 ":\t%s\t\t%s\n", insn[j].address, insn[j].mnemonic, insn[j].op_str);
(*event_callback)(event_stream, "insn", (void*) insn[j].address);
print("%s\t\t%s", insn[j].mnemonic, insn[j].op_str);
(*event_callback)(event_stream, "/insn", (void*) (insn[j].address + insn[j].size));
if (newline) {
/* follow each complete insn by a nice newline */
print("\n");
}
}
cs_free(insn, count);
}