struct disassemble_info *info)
{
CPUDebug *s = container_of(info, CPUDebug, info);
+ int r;
- cpu_memory_rw_debug(s->cpu, memaddr, myaddr, length, 0);
- return 0;
+ r = cpu_memory_rw_debug(s->cpu, memaddr, myaddr, length, 0);
+
+ return r ? EIO : 0;
}
/* Print an error message. We can assume that this is in response to
}
}
-static void cap_dump_insn(disassemble_info *info, cs_insn *insn)
+static void cap_dump_insn(disassemble_info *info, cs_insn *insn,
+ const char *note)
{
fprintf_function print = info->fprintf_func;
int i, n, split;
}
/* Print the actual instruction. */
- print(info->stream, " %-8s %s\n", insn->mnemonic, insn->op_str);
+ print(info->stream, " %-8s %s", insn->mnemonic, insn->op_str);
+ if (note) {
+ print(info->stream, "\t\t%s", note);
+ }
+ print(info->stream, "\n");
/* Dump any remaining part of the insn on subsequent lines. */
for (i = split; i < n; i += split) {
size -= tsize;
while (cs_disasm_iter(handle, &cbuf, &csize, &pc, insn)) {
- cap_dump_insn(info, insn);
+ cap_dump_insn(info, insn, NULL);
}
/* If the target memory is not consumed, go back for more... */
}
/* Disassemble SIZE bytes at CODE for the host. */
-static bool cap_disas_host(disassemble_info *info, void *code, size_t size)
+static bool cap_disas_host(disassemble_info *info, void *code, size_t size,
+ const char *note)
{
csh handle;
const uint8_t *cbuf;
pc = (uintptr_t)code;
while (cs_disasm_iter(handle, &cbuf, &size, &pc, insn)) {
- cap_dump_insn(info, insn);
+ cap_dump_insn(info, insn, note);
+ note = NULL;
}
if (size != 0) {
(*info->fprintf_func)(info->stream,
csize += tsize;
if (cs_disasm_iter(handle, &cbuf, &csize, &pc, insn)) {
- cap_dump_insn(info, insn);
+ cap_dump_insn(info, insn, NULL);
if (--count <= 0) {
break;
}
#endif /* !CONFIG_USER_ONLY */
#else
# define cap_disas_target(i, p, s) false
-# define cap_disas_host(i, p, s) false
+# define cap_disas_host(i, p, s, n) false
# define cap_disas_monitor(i, p, c) false
+# define cap_disas_plugin(i, p, c) false
#endif /* CONFIG_CAPSTONE */
/* Disassemble this for me please... (debugging). */
}
}
+static __thread GString plugin_disas_output;
+
+static int plugin_printf(FILE *stream, const char *fmt, ...)
+{
+ va_list va;
+ GString *s = &plugin_disas_output;
+ int initial_len = s->len;
+
+ va_start(va, fmt);
+ g_string_append_vprintf(s, fmt, va);
+ va_end(va);
+
+ return s->len - initial_len;
+}
+
+static void plugin_print_address(bfd_vma addr, struct disassemble_info *info)
+{
+ /* does nothing */
+}
+
+
+#ifdef CONFIG_CAPSTONE
+/* Disassemble a single instruction directly into plugin output */
+static
+bool cap_disas_plugin(disassemble_info *info, uint64_t pc, size_t size)
+{
+ uint8_t cap_buf[1024];
+ csh handle;
+ cs_insn *insn;
+ size_t csize = 0;
+ int count;
+ GString *s = &plugin_disas_output;
+
+ if (cap_disas_start(info, &handle) != CS_ERR_OK) {
+ return false;
+ }
+ insn = cap_insn;
+
+ size_t tsize = MIN(sizeof(cap_buf) - csize, size);
+ const uint8_t *cbuf = cap_buf;
+ target_read_memory(pc, cap_buf, tsize, info);
+
+ count = cs_disasm(handle, cbuf, size, 0, 1, &insn);
+
+ if (count) {
+ g_string_printf(s, "%s %s", insn->mnemonic, insn->op_str);
+ } else {
+ g_string_printf(s, "cs_disasm failed");
+ }
+
+ cs_close(&handle);
+ return true;
+}
+#endif
+
+/*
+ * We should only be dissembling one instruction at a time here. If
+ * there is left over it usually indicates the front end has read more
+ * bytes than it needed.
+ */
+char *plugin_disas(CPUState *cpu, uint64_t addr, size_t size)
+{
+ CPUClass *cc = CPU_GET_CLASS(cpu);
+ int count;
+ CPUDebug s;
+ GString *ds = g_string_set_size(&plugin_disas_output, 0);
+
+ g_assert(ds == &plugin_disas_output);
+
+ INIT_DISASSEMBLE_INFO(s.info, NULL, plugin_printf);
+
+ s.cpu = cpu;
+ s.info.read_memory_func = target_read_memory;
+ s.info.buffer_vma = addr;
+ s.info.buffer_length = size;
+ s.info.print_address_func = plugin_print_address;
+ s.info.cap_arch = -1;
+ s.info.cap_mode = 0;
+ s.info.cap_insn_unit = 4;
+ s.info.cap_insn_split = 4;
+
+#ifdef TARGET_WORDS_BIGENDIAN
+ s.info.endian = BFD_ENDIAN_BIG;
+#else
+ s.info.endian = BFD_ENDIAN_LITTLE;
+#endif
+
+ if (cc->disas_set_info) {
+ cc->disas_set_info(cpu, &s.info);
+ }
+
+ if (s.info.cap_arch >= 0 && cap_disas_plugin(&s.info, addr, size)) {
+ return g_strdup(ds->str);
+ }
+
+ if (s.info.print_insn == NULL) {
+ s.info.print_insn = print_insn_od_target;
+ }
+
+ count = s.info.print_insn(addr, &s.info);
+
+ /* The decoder probably read more than it needed it's not critical */
+ if (count < size) {
+ warn_report("%s: %zu bytes left over", __func__, size - count);
+ }
+
+ return g_strdup(ds->str);
+}
+
/* Disassemble this for me please... (debugging). */
-void disas(FILE *out, void *code, unsigned long size)
+void disas(FILE *out, void *code, unsigned long size, const char *note)
{
uintptr_t pc;
int count;
print_insn = print_insn_hppa;
#endif
- if (s.info.cap_arch >= 0 && cap_disas_host(&s.info, code, size)) {
+ if (s.info.cap_arch >= 0 && cap_disas_host(&s.info, code, size, note)) {
return;
}
for (pc = (uintptr_t)code; size > 0; pc += count, size -= count) {
fprintf(out, "0x%08" PRIxPTR ": ", pc);
count = print_insn(pc, &s.info);
- fprintf(out, "\n");
- if (count < 0)
- break;
+ if (note) {
+ fprintf(out, "\t\t%s", note);
+ note = NULL;
+ }
+ fprintf(out, "\n");
+ if (count < 0) {
+ break;
+ }
}
+
}
/* Look up symbol for debugging purpose. Returns "" if unknown. */
struct disassemble_info *info)
{
CPUDebug *s = container_of(info, CPUDebug, info);
+ MemTxResult res;
- address_space_read(s->cpu->as, memaddr, MEMTXATTRS_UNSPECIFIED,
- myaddr, length);
- return 0;
+ res = address_space_read(s->cpu->as, memaddr, MEMTXATTRS_UNSPECIFIED,
+ myaddr, length);
+ return res == MEMTX_OK ? 0 : EIO;
}
/* Disassembler for the monitor. */
projects / mirror_qemu.git / blobdiff