438 lines
12 KiB
C
438 lines
12 KiB
C
/* General "disassemble this chunk" code. Used for debugging. */
|
|
#include "config.h"
|
|
#include "dis-asm.h"
|
|
#include "elf.h"
|
|
#include <errno.h>
|
|
|
|
#include "cpu.h"
|
|
#include "exec-all.h"
|
|
#include "disas.h"
|
|
|
|
/* Filled in by elfload.c. Simplistic, but will do for now. */
|
|
struct syminfo *syminfos = NULL;
|
|
|
|
/* Get LENGTH bytes from info's buffer, at target address memaddr.
|
|
Transfer them to myaddr. */
|
|
int
|
|
buffer_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
|
|
struct disassemble_info *info)
|
|
{
|
|
if (memaddr < info->buffer_vma
|
|
|| memaddr + length > info->buffer_vma + info->buffer_length)
|
|
/* Out of bounds. Use EIO because GDB uses it. */
|
|
return EIO;
|
|
memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);
|
|
return 0;
|
|
}
|
|
|
|
/* Get LENGTH bytes from info's buffer, at target address memaddr.
|
|
Transfer them to myaddr. */
|
|
static int
|
|
target_read_memory (bfd_vma memaddr,
|
|
bfd_byte *myaddr,
|
|
int length,
|
|
struct disassemble_info *info)
|
|
{
|
|
cpu_memory_rw_debug(cpu_single_env, memaddr, myaddr, length, 0);
|
|
return 0;
|
|
}
|
|
|
|
/* Print an error message. We can assume that this is in response to
|
|
an error return from buffer_read_memory. */
|
|
void
|
|
perror_memory (int status, bfd_vma memaddr, struct disassemble_info *info)
|
|
{
|
|
if (status != EIO)
|
|
/* Can't happen. */
|
|
(*info->fprintf_func) (info->stream, "Unknown error %d\n", status);
|
|
else
|
|
/* Actually, address between memaddr and memaddr + len was
|
|
out of bounds. */
|
|
(*info->fprintf_func) (info->stream,
|
|
"Address 0x%" PRIx64 " is out of bounds.\n", memaddr);
|
|
}
|
|
|
|
/* This could be in a separate file, to save miniscule amounts of space
|
|
in statically linked executables. */
|
|
|
|
/* Just print the address is hex. This is included for completeness even
|
|
though both GDB and objdump provide their own (to print symbolic
|
|
addresses). */
|
|
|
|
void
|
|
generic_print_address (bfd_vma addr, struct disassemble_info *info)
|
|
{
|
|
(*info->fprintf_func) (info->stream, "0x%" PRIx64, addr);
|
|
}
|
|
|
|
/* Just return the given address. */
|
|
|
|
int
|
|
generic_symbol_at_address (bfd_vma addr, struct disassemble_info *info)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
bfd_vma bfd_getl64 (const bfd_byte *addr)
|
|
{
|
|
unsigned long long v;
|
|
|
|
v = (unsigned long long) addr[0];
|
|
v |= (unsigned long long) addr[1] << 8;
|
|
v |= (unsigned long long) addr[2] << 16;
|
|
v |= (unsigned long long) addr[3] << 24;
|
|
v |= (unsigned long long) addr[4] << 32;
|
|
v |= (unsigned long long) addr[5] << 40;
|
|
v |= (unsigned long long) addr[6] << 48;
|
|
v |= (unsigned long long) addr[7] << 56;
|
|
return (bfd_vma) v;
|
|
}
|
|
|
|
bfd_vma bfd_getl32 (const bfd_byte *addr)
|
|
{
|
|
unsigned long v;
|
|
|
|
v = (unsigned long) addr[0];
|
|
v |= (unsigned long) addr[1] << 8;
|
|
v |= (unsigned long) addr[2] << 16;
|
|
v |= (unsigned long) addr[3] << 24;
|
|
return (bfd_vma) v;
|
|
}
|
|
|
|
bfd_vma bfd_getb32 (const bfd_byte *addr)
|
|
{
|
|
unsigned long v;
|
|
|
|
v = (unsigned long) addr[0] << 24;
|
|
v |= (unsigned long) addr[1] << 16;
|
|
v |= (unsigned long) addr[2] << 8;
|
|
v |= (unsigned long) addr[3];
|
|
return (bfd_vma) v;
|
|
}
|
|
|
|
bfd_vma bfd_getl16 (const bfd_byte *addr)
|
|
{
|
|
unsigned long v;
|
|
|
|
v = (unsigned long) addr[0];
|
|
v |= (unsigned long) addr[1] << 8;
|
|
return (bfd_vma) v;
|
|
}
|
|
|
|
bfd_vma bfd_getb16 (const bfd_byte *addr)
|
|
{
|
|
unsigned long v;
|
|
|
|
v = (unsigned long) addr[0] << 24;
|
|
v |= (unsigned long) addr[1] << 16;
|
|
return (bfd_vma) v;
|
|
}
|
|
|
|
#ifdef TARGET_ARM
|
|
static int
|
|
print_insn_thumb1(bfd_vma pc, disassemble_info *info)
|
|
{
|
|
return print_insn_arm(pc | 1, info);
|
|
}
|
|
#endif
|
|
|
|
/* Disassemble this for me please... (debugging). 'flags' has the following
|
|
values:
|
|
i386 - nonzero means 16 bit code
|
|
arm - nonzero means thumb code
|
|
ppc - nonzero means little endian
|
|
other targets - unused
|
|
*/
|
|
void target_disas(FILE *out, target_ulong code, target_ulong size, int flags)
|
|
{
|
|
target_ulong pc;
|
|
int count;
|
|
struct disassemble_info disasm_info;
|
|
int (*print_insn)(bfd_vma pc, disassemble_info *info);
|
|
|
|
INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
|
|
|
|
disasm_info.read_memory_func = target_read_memory;
|
|
disasm_info.buffer_vma = code;
|
|
disasm_info.buffer_length = size;
|
|
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
disasm_info.endian = BFD_ENDIAN_BIG;
|
|
#else
|
|
disasm_info.endian = BFD_ENDIAN_LITTLE;
|
|
#endif
|
|
#if defined(TARGET_I386)
|
|
if (flags == 2)
|
|
disasm_info.mach = bfd_mach_x86_64;
|
|
else if (flags == 1)
|
|
disasm_info.mach = bfd_mach_i386_i8086;
|
|
else
|
|
disasm_info.mach = bfd_mach_i386_i386;
|
|
print_insn = print_insn_i386;
|
|
#elif defined(TARGET_ARM)
|
|
if (flags)
|
|
print_insn = print_insn_thumb1;
|
|
else
|
|
print_insn = print_insn_arm;
|
|
#elif defined(TARGET_SPARC)
|
|
print_insn = print_insn_sparc;
|
|
#ifdef TARGET_SPARC64
|
|
disasm_info.mach = bfd_mach_sparc_v9b;
|
|
#endif
|
|
#elif defined(TARGET_PPC)
|
|
if (flags >> 16)
|
|
disasm_info.endian = BFD_ENDIAN_LITTLE;
|
|
if (flags & 0xFFFF) {
|
|
/* If we have a precise definitions of the instructions set, use it */
|
|
disasm_info.mach = flags & 0xFFFF;
|
|
} else {
|
|
#ifdef TARGET_PPC64
|
|
disasm_info.mach = bfd_mach_ppc64;
|
|
#else
|
|
disasm_info.mach = bfd_mach_ppc;
|
|
#endif
|
|
}
|
|
print_insn = print_insn_ppc;
|
|
#elif defined(TARGET_M68K)
|
|
print_insn = print_insn_m68k;
|
|
#elif defined(TARGET_MIPS)
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
print_insn = print_insn_big_mips;
|
|
#else
|
|
print_insn = print_insn_little_mips;
|
|
#endif
|
|
#elif defined(TARGET_SH4)
|
|
disasm_info.mach = bfd_mach_sh4;
|
|
print_insn = print_insn_sh;
|
|
#elif defined(TARGET_ALPHA)
|
|
disasm_info.mach = bfd_mach_alpha;
|
|
print_insn = print_insn_alpha;
|
|
#elif defined(TARGET_CRIS)
|
|
if (flags != 32) {
|
|
disasm_info.mach = bfd_mach_cris_v0_v10;
|
|
print_insn = print_insn_crisv10;
|
|
} else {
|
|
disasm_info.mach = bfd_mach_cris_v32;
|
|
print_insn = print_insn_crisv32;
|
|
}
|
|
#elif defined(TARGET_MICROBLAZE)
|
|
disasm_info.mach = bfd_arch_microblaze;
|
|
print_insn = print_insn_microblaze;
|
|
#else
|
|
fprintf(out, "0x" TARGET_FMT_lx
|
|
": Asm output not supported on this arch\n", code);
|
|
return;
|
|
#endif
|
|
|
|
for (pc = code; size > 0; pc += count, size -= count) {
|
|
fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
|
|
count = print_insn(pc, &disasm_info);
|
|
#if 0
|
|
{
|
|
int i;
|
|
uint8_t b;
|
|
fprintf(out, " {");
|
|
for(i = 0; i < count; i++) {
|
|
target_read_memory(pc + i, &b, 1, &disasm_info);
|
|
fprintf(out, " %02x", b);
|
|
}
|
|
fprintf(out, " }");
|
|
}
|
|
#endif
|
|
fprintf(out, "\n");
|
|
if (count < 0)
|
|
break;
|
|
if (size < count) {
|
|
fprintf(out,
|
|
"Disassembler disagrees with translator over instruction "
|
|
"decoding\n"
|
|
"Please report this to qemu-devel@nongnu.org\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Disassemble this for me please... (debugging). */
|
|
void disas(FILE *out, void *code, unsigned long size)
|
|
{
|
|
unsigned long pc;
|
|
int count;
|
|
struct disassemble_info disasm_info;
|
|
int (*print_insn)(bfd_vma pc, disassemble_info *info);
|
|
|
|
INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
|
|
|
|
disasm_info.buffer = code;
|
|
disasm_info.buffer_vma = (unsigned long)code;
|
|
disasm_info.buffer_length = size;
|
|
|
|
#ifdef HOST_WORDS_BIGENDIAN
|
|
disasm_info.endian = BFD_ENDIAN_BIG;
|
|
#else
|
|
disasm_info.endian = BFD_ENDIAN_LITTLE;
|
|
#endif
|
|
#if defined(__i386__)
|
|
disasm_info.mach = bfd_mach_i386_i386;
|
|
print_insn = print_insn_i386;
|
|
#elif defined(__x86_64__)
|
|
disasm_info.mach = bfd_mach_x86_64;
|
|
print_insn = print_insn_i386;
|
|
#elif defined(_ARCH_PPC)
|
|
print_insn = print_insn_ppc;
|
|
#elif defined(__alpha__)
|
|
print_insn = print_insn_alpha;
|
|
#elif defined(__sparc__)
|
|
print_insn = print_insn_sparc;
|
|
#if defined(__sparc_v8plus__) || defined(__sparc_v8plusa__) || defined(__sparc_v9__)
|
|
disasm_info.mach = bfd_mach_sparc_v9b;
|
|
#endif
|
|
#elif defined(__arm__)
|
|
print_insn = print_insn_arm;
|
|
#elif defined(__MIPSEB__)
|
|
print_insn = print_insn_big_mips;
|
|
#elif defined(__MIPSEL__)
|
|
print_insn = print_insn_little_mips;
|
|
#elif defined(__m68k__)
|
|
print_insn = print_insn_m68k;
|
|
#elif defined(__s390__)
|
|
print_insn = print_insn_s390;
|
|
#elif defined(__hppa__)
|
|
print_insn = print_insn_hppa;
|
|
#elif defined(__ia64__)
|
|
print_insn = print_insn_ia64;
|
|
#else
|
|
fprintf(out, "0x%lx: Asm output not supported on this arch\n",
|
|
(long) code);
|
|
return;
|
|
#endif
|
|
for (pc = (unsigned long)code; size > 0; pc += count, size -= count) {
|
|
fprintf(out, "0x%08lx: ", pc);
|
|
#ifdef __arm__
|
|
/* since data is included in the code, it is better to
|
|
display code data too */
|
|
fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
|
|
#endif
|
|
count = print_insn(pc, &disasm_info);
|
|
fprintf(out, "\n");
|
|
if (count < 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Look up symbol for debugging purpose. Returns "" if unknown. */
|
|
const char *lookup_symbol(target_ulong orig_addr)
|
|
{
|
|
const char *symbol = "";
|
|
struct syminfo *s;
|
|
|
|
for (s = syminfos; s; s = s->next) {
|
|
symbol = s->lookup_symbol(s, orig_addr);
|
|
if (symbol[0] != '\0') {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return symbol;
|
|
}
|
|
|
|
#if !defined(CONFIG_USER_ONLY)
|
|
|
|
#include "monitor.h"
|
|
|
|
static int monitor_disas_is_physical;
|
|
static CPUState *monitor_disas_env;
|
|
|
|
static int
|
|
monitor_read_memory (bfd_vma memaddr, bfd_byte *myaddr, int length,
|
|
struct disassemble_info *info)
|
|
{
|
|
if (monitor_disas_is_physical) {
|
|
cpu_physical_memory_rw(memaddr, myaddr, length, 0);
|
|
} else {
|
|
cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int GCC_FMT_ATTR(2, 3)
|
|
monitor_fprintf(FILE *stream, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
monitor_vprintf((Monitor *)stream, fmt, ap);
|
|
va_end(ap);
|
|
return 0;
|
|
}
|
|
|
|
void monitor_disas(Monitor *mon, CPUState *env,
|
|
target_ulong pc, int nb_insn, int is_physical, int flags)
|
|
{
|
|
int count, i;
|
|
struct disassemble_info disasm_info;
|
|
int (*print_insn)(bfd_vma pc, disassemble_info *info);
|
|
|
|
INIT_DISASSEMBLE_INFO(disasm_info, (FILE *)mon, monitor_fprintf);
|
|
|
|
monitor_disas_env = env;
|
|
monitor_disas_is_physical = is_physical;
|
|
disasm_info.read_memory_func = monitor_read_memory;
|
|
|
|
disasm_info.buffer_vma = pc;
|
|
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
disasm_info.endian = BFD_ENDIAN_BIG;
|
|
#else
|
|
disasm_info.endian = BFD_ENDIAN_LITTLE;
|
|
#endif
|
|
#if defined(TARGET_I386)
|
|
if (flags == 2)
|
|
disasm_info.mach = bfd_mach_x86_64;
|
|
else if (flags == 1)
|
|
disasm_info.mach = bfd_mach_i386_i8086;
|
|
else
|
|
disasm_info.mach = bfd_mach_i386_i386;
|
|
print_insn = print_insn_i386;
|
|
#elif defined(TARGET_ARM)
|
|
print_insn = print_insn_arm;
|
|
#elif defined(TARGET_ALPHA)
|
|
print_insn = print_insn_alpha;
|
|
#elif defined(TARGET_SPARC)
|
|
print_insn = print_insn_sparc;
|
|
#ifdef TARGET_SPARC64
|
|
disasm_info.mach = bfd_mach_sparc_v9b;
|
|
#endif
|
|
#elif defined(TARGET_PPC)
|
|
#ifdef TARGET_PPC64
|
|
disasm_info.mach = bfd_mach_ppc64;
|
|
#else
|
|
disasm_info.mach = bfd_mach_ppc;
|
|
#endif
|
|
print_insn = print_insn_ppc;
|
|
#elif defined(TARGET_M68K)
|
|
print_insn = print_insn_m68k;
|
|
#elif defined(TARGET_MIPS)
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
print_insn = print_insn_big_mips;
|
|
#else
|
|
print_insn = print_insn_little_mips;
|
|
#endif
|
|
#elif defined(TARGET_SH4)
|
|
disasm_info.mach = bfd_mach_sh4;
|
|
print_insn = print_insn_sh;
|
|
#else
|
|
monitor_printf(mon, "0x" TARGET_FMT_lx
|
|
": Asm output not supported on this arch\n", pc);
|
|
return;
|
|
#endif
|
|
|
|
for(i = 0; i < nb_insn; i++) {
|
|
monitor_printf(mon, "0x" TARGET_FMT_lx ": ", pc);
|
|
count = print_insn(pc, &disasm_info);
|
|
monitor_printf(mon, "\n");
|
|
if (count < 0)
|
|
break;
|
|
pc += count;
|
|
}
|
|
}
|
|
#endif
|