/* 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;
-/* Disassemble this for me please... (debugging). */
-void disas(FILE *out, void *code, unsigned long size, enum disas_type type)
+/* 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;
+{
+ 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 !defined(CONFIG_USER_ONLY)
+/* Get LENGTH bytes from info's buffer, at target address memaddr.
+ Transfer them to myaddr. */
+static int
+target_read_memory (memaddr, myaddr, length, info)
+ bfd_vma memaddr;
+ bfd_byte *myaddr;
+ int length;
+ struct disassemble_info *info;
+{
+ int i;
+ for(i = 0; i < length; i++) {
+ myaddr[i] = ldub_code((void *)((long)memaddr + i));
+ }
+ return 0;
+}
+#endif
+
+/* 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;
+{
+ 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%llx 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 (addr, info)
+ bfd_vma addr;
+ struct disassemble_info *info;
+{
+ (*info->fprintf_func) (info->stream, "0x%llx", addr);
+}
+
+/* Just return the given address. */
+
+int
+generic_symbol_at_address (addr, info)
+ bfd_vma addr;
+ struct disassemble_info * info;
+{
+ return 1;
+}
+
+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;
+}
+
+/* Disassemble this for me please... (debugging). 'flags' is only used
+ for i386: non zero means 16 bit code */
+void disas(FILE *out, void *code, unsigned long size, int is_host, int flags)
{
uint8_t *pc;
int count;
INIT_DISASSEMBLE_INFO(disasm_info, out, fprintf);
+#if !defined(CONFIG_USER_ONLY)
+ if (!is_host) {
+ disasm_info.read_memory_func = target_read_memory;
+ }
+#endif
+
disasm_info.buffer = code;
disasm_info.buffer_vma = (unsigned long)code;
disasm_info.buffer_length = size;
- if (type == DISAS_TARGET) {
+ if (is_host) {
#ifdef WORDS_BIGENDIAN
disasm_info.endian = BFD_ENDIAN_BIG;
#else
disasm_info.endian = BFD_ENDIAN_LITTLE;
#endif
-#ifdef __i386__
+#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(__powerpc__)
print_insn = print_insn_ppc;
#elif defined(__alpha__)
print_insn = print_insn_alpha;
+#elif defined(__sparc__)
+ print_insn = print_insn_sparc;
+#elif defined(__arm__)
+ print_insn = print_insn_arm;
#else
fprintf(out, "Asm output not supported on this arch\n");
return;
#endif
} else {
- /* Currently only source supported in x86. */
+#ifdef TARGET_WORDS_BIGENDIAN
+ disasm_info.endian = BFD_ENDIAN_BIG;
+#else
disasm_info.endian = BFD_ENDIAN_LITTLE;
- if (type == DISAS_I386_I386)
+#endif
+#if defined(TARGET_I386)
+ if (!flags)
disasm_info.mach = bfd_mach_i386_i386;
else
disasm_info.mach = bfd_mach_i386_i8086;
print_insn = print_insn_i386;
+#elif defined(TARGET_ARM)
+ print_insn = print_insn_arm;
+#elif defined(TARGET_SPARC)
+ print_insn = print_insn_sparc;
+#elif defined(TARGET_PPC)
+ print_insn = print_insn_ppc;
+#else
+ fprintf(out, "Asm output not supported on this arch\n");
+ return;
+#endif
}
for (pc = code; pc < (uint8_t *)code + size; pc += count) {
fprintf(out, "0x%08lx: ", (long)pc);
- count = print_insn((long)pc, &disasm_info);
+#ifdef __arm__
+ /* since data are included in the code, it is better to
+ display code data too */
+ if (is_host) {
+ fprintf(out, "%08x ", (int)bfd_getl32((const bfd_byte *)pc));
+ }
+#endif
+ count = print_insn((unsigned long)pc, &disasm_info);
fprintf(out, "\n");
if (count < 0)
break;
}
return "";
}
+
+#if !defined(CONFIG_USER_ONLY)
+
+void term_vprintf(const char *fmt, va_list ap);
+void term_printf(const char *fmt, ...);
+
+static int monitor_disas_is_physical;
+
+static int
+monitor_read_memory (memaddr, myaddr, length, info)
+ 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(cpu_single_env, memaddr,myaddr, length, 0);
+ }
+ return 0;
+}
+
+static int monitor_fprintf(FILE *stream, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ term_vprintf(fmt, ap);
+ va_end(ap);
+ return 0;
+}
+
+void monitor_disas(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, NULL, monitor_fprintf);
+
+ 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)
+ disasm_info.mach = bfd_mach_i386_i386;
+ else
+ disasm_info.mach = bfd_mach_i386_i8086;
+ print_insn = print_insn_i386;
+#elif defined(TARGET_ARM)
+ print_insn = print_insn_arm;
+#elif defined(TARGET_SPARC)
+ print_insn = print_insn_sparc;
+#elif defined(TARGET_PPC)
+ print_insn = print_insn_ppc;
+#else
+ term_printf("Asm output not supported on this arch\n");
+ return;
+#endif
+
+ for(i = 0; i < nb_insn; i++) {
+ term_printf("0x%08lx: ", (unsigned long)pc);
+ count = print_insn(pc, &disasm_info);
+ term_printf("\n");
+ if (count < 0)
+ break;
+ pc += count;
+ }
+}
+#endif
projects / qemu.git / blobdiff