/* General "disassemble this chunk" code. Used for debugging. */
+#include "config.h"
#include "dis-asm.h"
-#include "disas.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. */
-unsigned int disas_num_syms;
-void *disas_symtab;
-const char *disas_strtab;
+struct syminfo *syminfos = NULL;
/* Get LENGTH bytes from info's buffer, at target address memaddr.
Transfer them to myaddr. */
int
-buffer_read_memory (memaddr, myaddr, length, info)
- bfd_vma memaddr;
- bfd_byte *myaddr;
- int length;
- struct disassemble_info *info;
+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;
+ 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 (status, memaddr, info)
- int status;
- bfd_vma memaddr;
- struct disassemble_info *info;
+perror_memory (int status, bfd_vma memaddr, struct disassemble_info *info)
{
if (status != EIO)
/* Can't happen. */
/* Actually, address between memaddr and memaddr + len was
out of bounds. */
(*info->fprintf_func) (info->stream,
- "Address 0x%x is out of bounds.\n", memaddr);
+ "Address 0x%" PRIx64 " is out of bounds.\n", memaddr);
}
/* This could be in a separate file, to save miniscule amounts of space
addresses). */
void
-generic_print_address (addr, info)
- bfd_vma addr;
- struct disassemble_info *info;
+generic_print_address (bfd_vma addr, struct disassemble_info *info)
{
- (*info->fprintf_func) (info->stream, "0x%x", addr);
+ (*info->fprintf_func) (info->stream, "0x%" PRIx64, addr);
}
/* Just return the given address. */
int
-generic_symbol_at_address (addr, info)
- bfd_vma addr;
- struct disassemble_info * info;
+generic_symbol_at_address (bfd_vma addr, struct disassemble_info *info)
{
return 1;
}
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)
+ 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, enum disas_type type)
+void disas(FILE *out, void *code, unsigned long size)
{
- uint8_t *pc;
+ unsigned long pc;
int count;
struct disassemble_info disasm_info;
int (*print_insn)(bfd_vma pc, disassemble_info *info);
disasm_info.buffer_vma = (unsigned long)code;
disasm_info.buffer_length = size;
- if (type == DISAS_TARGET) {
#ifdef WORDS_BIGENDIAN
- disasm_info.endian = BFD_ENDIAN_BIG;
+ disasm_info.endian = BFD_ENDIAN_BIG;
#else
- disasm_info.endian = BFD_ENDIAN_LITTLE;
+ disasm_info.endian = BFD_ENDIAN_LITTLE;
#endif
-#ifdef __i386__
- disasm_info.mach = bfd_mach_i386_i386;
- print_insn = print_insn_i386;
-#elif defined(__powerpc__)
- print_insn = print_insn_ppc;
+#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;
+ print_insn = print_insn_alpha;
#elif defined(__sparc__)
- print_insn = print_insn_sparc;
-#elif defined(__arm__)
- print_insn = print_insn_arm;
+ 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;
#else
- fprintf(out, "Asm output not supported on this arch\n");
- return;
+ fprintf(out, "0x%lx: Asm output not supported on this arch\n",
+ (long) code);
+ return;
#endif
- } else {
- /* Currently only source supported in x86. */
- disasm_info.endian = BFD_ENDIAN_LITTLE;
- if (type == DISAS_I386_I386)
- disasm_info.mach = bfd_mach_i386_i386;
- else
- disasm_info.mach = bfd_mach_i386_i8086;
- print_insn = print_insn_i386;
- }
-
- for (pc = code; pc < (uint8_t *)code + size; pc += count) {
- fprintf(out, "0x%08lx: ", (long)pc);
+ for (pc = (unsigned long)code; size > 0; pc += count, size -= count) {
+ fprintf(out, "0x%08lx: ", pc);
#ifdef __arm__
- /* since data are included in the code, it is better to
+ /* since data is included in the code, it is better to
display code data too */
- if (type == DISAS_TARGET) {
- fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
- }
+ fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
#endif
- count = print_insn((unsigned long)pc, &disasm_info);
+ 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(void *orig_addr)
+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)
{
- unsigned int i;
- /* Hack, because we know this is x86. */
- Elf32_Sym *sym = disas_symtab;
+ 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 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;
- for (i = 0; i < disas_num_syms; i++) {
- if (sym[i].st_shndx == SHN_UNDEF
- || sym[i].st_shndx >= SHN_LORESERVE)
- continue;
+ disasm_info.buffer_vma = pc;
- if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC)
- continue;
+#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
+#else
+ monitor_printf(mon, "0x" TARGET_FMT_lx
+ ": Asm output not supported on this arch\n", pc);
+ return;
+#endif
- if ((long)orig_addr >= sym[i].st_value
- && (long)orig_addr < sym[i].st_value + sym[i].st_size)
- return disas_strtab + sym[i].st_name;
+ 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;
}
- return "";
}
+#endif
projects / qemu / blobdiff