--- /dev/null
+/* General "disassemble this chunk" code. Used for debugging. */
+#include "config.h"
+#include "qemu-common.h"
+#include "disas/bfd.h"
+#include "elf.h"
+#include <errno.h>
+
+#include "cpu.h"
+#include "disas/disas.h"
+
+typedef struct CPUDebug {
+ struct disassemble_info info;
+ CPUState *cpu;
+} CPUDebug;
+
+/* 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)
+{
+ CPUDebug *s = container_of(info, CPUDebug, info);
+
+ cpu_memory_rw_debug(s->cpu, 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 minuscule 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);
+}
+
+/* Print address in hex, truncated to the width of a target virtual address. */
+static void
+generic_print_target_address(bfd_vma addr, struct disassemble_info *info)
+{
+ uint64_t mask = ~0ULL >> (64 - TARGET_VIRT_ADDR_SPACE_BITS);
+ generic_print_address(addr & mask, info);
+}
+
+/* Print address in hex, truncated to the width of a host virtual address. */
+static void
+generic_print_host_address(bfd_vma addr, struct disassemble_info *info)
+{
+ uint64_t mask = ~0ULL >> (64 - (sizeof(void *) * 8));
+ generic_print_address(addr & mask, info);
+}
+
+/* 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;
+}
+
+static int print_insn_objdump(bfd_vma pc, disassemble_info *info,
+ const char *prefix)
+{
+ int i, n = info->buffer_length;
+ uint8_t *buf = g_malloc(n);
+
+ info->read_memory_func(pc, buf, n, info);
+
+ for (i = 0; i < n; ++i) {
+ if (i % 32 == 0) {
+ info->fprintf_func(info->stream, "\n%s: ", prefix);
+ }
+ info->fprintf_func(info->stream, "%02x", buf[i]);
+ }
+
+ g_free(buf);
+ return n;
+}
+
+static int print_insn_od_host(bfd_vma pc, disassemble_info *info)
+{
+ return print_insn_objdump(pc, info, "OBJD-H");
+}
+
+static int print_insn_od_target(bfd_vma pc, disassemble_info *info)
+{
+ return print_insn_objdump(pc, info, "OBJD-T");
+}
+
+/* Disassemble this for me please... (debugging). 'flags' has the following
+ values:
+ i386 - 1 means 16 bit code, 2 means 64 bit code
+ ppc - bits 0:15 specify (optionally) the machine instruction set;
+ bit 16 indicates little endian.
+ other targets - unused
+ */
+void target_disas(FILE *out, CPUState *cpu, target_ulong code,
+ target_ulong size, int flags)
+{
+ CPUClass *cc = CPU_GET_CLASS(cpu);
+ target_ulong pc;
+ int count;
+ CPUDebug s;
+
+ INIT_DISASSEMBLE_INFO(s.info, out, fprintf);
+
+ s.cpu = cpu;
+ s.info.read_memory_func = target_read_memory;
+ s.info.buffer_vma = code;
+ s.info.buffer_length = size;
+ s.info.print_address_func = generic_print_target_address;
+
+#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 defined(TARGET_I386)
+ if (flags == 2) {
+ s.info.mach = bfd_mach_x86_64;
+ } else if (flags == 1) {
+ s.info.mach = bfd_mach_i386_i8086;
+ } else {
+ s.info.mach = bfd_mach_i386_i386;
+ }
+ s.info.print_insn = print_insn_i386;
+#elif defined(TARGET_SPARC)
+ s.info.print_insn = print_insn_sparc;
+#ifdef TARGET_SPARC64
+ s.info.mach = bfd_mach_sparc_v9b;
+#endif
+#elif defined(TARGET_PPC)
+ if ((flags >> 16) & 1) {
+ s.info.endian = BFD_ENDIAN_LITTLE;
+ }
+ if (flags & 0xFFFF) {
+ /* If we have a precise definition of the instruction set, use it. */
+ s.info.mach = flags & 0xFFFF;
+ } else {
+#ifdef TARGET_PPC64
+ s.info.mach = bfd_mach_ppc64;
+#else
+ s.info.mach = bfd_mach_ppc;
+#endif
+ }
+ s.info.disassembler_options = (char *)"any";
+ s.info.print_insn = print_insn_ppc;
+#elif defined(TARGET_M68K)
+ s.info.print_insn = print_insn_m68k;
+#elif defined(TARGET_MIPS)
+#ifdef TARGET_WORDS_BIGENDIAN
+ s.info.print_insn = print_insn_big_mips;
+#else
+ s.info.print_insn = print_insn_little_mips;
+#endif
+#elif defined(TARGET_SH4)
+ s.info.mach = bfd_mach_sh4;
+ s.info.print_insn = print_insn_sh;
+#elif defined(TARGET_ALPHA)
+ s.info.mach = bfd_mach_alpha_ev6;
+ s.info.print_insn = print_insn_alpha;
+#elif defined(TARGET_S390X)
+ s.info.mach = bfd_mach_s390_64;
+ s.info.print_insn = print_insn_s390;
+#elif defined(TARGET_MOXIE)
+ s.info.mach = bfd_arch_moxie;
+ s.info.print_insn = print_insn_moxie;
+#elif defined(TARGET_LM32)
+ s.info.mach = bfd_mach_lm32;
+ s.info.print_insn = print_insn_lm32;
+#endif
+ if (s.info.print_insn == NULL) {
+ s.info.print_insn = print_insn_od_target;
+ }
+
+ for (pc = code; size > 0; pc += count, size -= count) {
+ fprintf(out, "0x" TARGET_FMT_lx ": ", pc);
+ count = s.info.print_insn(pc, &s.info);
+#if 0
+ {
+ int i;
+ uint8_t b;
+ fprintf(out, " {");
+ for(i = 0; i < count; i++) {
+ target_read_memory(pc + i, &b, 1, &s.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)
+{
+ uintptr_t pc;
+ int count;
+ CPUDebug s;
+ int (*print_insn)(bfd_vma pc, disassemble_info *info) = NULL;
+
+ INIT_DISASSEMBLE_INFO(s.info, out, fprintf);
+ s.info.print_address_func = generic_print_host_address;
+
+ s.info.buffer = code;
+ s.info.buffer_vma = (uintptr_t)code;
+ s.info.buffer_length = size;
+
+#ifdef HOST_WORDS_BIGENDIAN
+ s.info.endian = BFD_ENDIAN_BIG;
+#else
+ s.info.endian = BFD_ENDIAN_LITTLE;
+#endif
+#if defined(CONFIG_TCG_INTERPRETER)
+ print_insn = print_insn_tci;
+#elif defined(__i386__)
+ s.info.mach = bfd_mach_i386_i386;
+ print_insn = print_insn_i386;
+#elif defined(__x86_64__)
+ s.info.mach = bfd_mach_x86_64;
+ print_insn = print_insn_i386;
+#elif defined(_ARCH_PPC)
+ s.info.disassembler_options = (char *)"any";
+ print_insn = print_insn_ppc;
+#elif defined(__aarch64__) && defined(CONFIG_ARM_A64_DIS)
+ print_insn = print_insn_arm_a64;
+#elif defined(__alpha__)
+ print_insn = print_insn_alpha;
+#elif defined(__sparc__)
+ print_insn = print_insn_sparc;
+ s.info.mach = bfd_mach_sparc_v9b;
+#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;
+#endif
+ if (print_insn == NULL) {
+ print_insn = print_insn_od_host;
+ }
+ 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;
+ }
+}
+
+/* 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/monitor.h"
+
+static int monitor_disas_is_physical;
+
+static int
+monitor_read_memory (bfd_vma memaddr, bfd_byte *myaddr, int length,
+ struct disassemble_info *info)
+{
+ CPUDebug *s = container_of(info, CPUDebug, info);
+
+ if (monitor_disas_is_physical) {
+ cpu_physical_memory_read(memaddr, myaddr, length);
+ } else {
+ cpu_memory_rw_debug(s->cpu, 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;
+}
+
+/* Disassembler for the monitor.
+ See target_disas for a description of flags. */
+void monitor_disas(Monitor *mon, CPUState *cpu,
+ target_ulong pc, int nb_insn, int is_physical, int flags)
+{
+ CPUClass *cc = CPU_GET_CLASS(cpu);
+ int count, i;
+ CPUDebug s;
+
+ INIT_DISASSEMBLE_INFO(s.info, (FILE *)mon, monitor_fprintf);
+
+ s.cpu = cpu;
+ monitor_disas_is_physical = is_physical;
+ s.info.read_memory_func = monitor_read_memory;
+ s.info.print_address_func = generic_print_target_address;
+
+ s.info.buffer_vma = pc;
+
+#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 defined(TARGET_I386)
+ if (flags == 2) {
+ s.info.mach = bfd_mach_x86_64;
+ } else if (flags == 1) {
+ s.info.mach = bfd_mach_i386_i8086;
+ } else {
+ s.info.mach = bfd_mach_i386_i386;
+ }
+ s.info.print_insn = print_insn_i386;
+#elif defined(TARGET_ALPHA)
+ s.info.print_insn = print_insn_alpha;
+#elif defined(TARGET_SPARC)
+ s.info.print_insn = print_insn_sparc;
+#ifdef TARGET_SPARC64
+ s.info.mach = bfd_mach_sparc_v9b;
+#endif
+#elif defined(TARGET_PPC)
+ if (flags & 0xFFFF) {
+ /* If we have a precise definition of the instruction set, use it. */
+ s.info.mach = flags & 0xFFFF;
+ } else {
+#ifdef TARGET_PPC64
+ s.info.mach = bfd_mach_ppc64;
+#else
+ s.info.mach = bfd_mach_ppc;
+#endif
+ }
+ if ((flags >> 16) & 1) {
+ s.info.endian = BFD_ENDIAN_LITTLE;
+ }
+ s.info.print_insn = print_insn_ppc;
+#elif defined(TARGET_M68K)
+ s.info.print_insn = print_insn_m68k;
+#elif defined(TARGET_MIPS)
+#ifdef TARGET_WORDS_BIGENDIAN
+ s.info.print_insn = print_insn_big_mips;
+#else
+ s.info.print_insn = print_insn_little_mips;
+#endif
+#elif defined(TARGET_SH4)
+ s.info.mach = bfd_mach_sh4;
+ s.info.print_insn = print_insn_sh;
+#elif defined(TARGET_S390X)
+ s.info.mach = bfd_mach_s390_64;
+ s.info.print_insn = print_insn_s390;
+#elif defined(TARGET_MOXIE)
+ s.info.mach = bfd_arch_moxie;
+ s.info.print_insn = print_insn_moxie;
+#elif defined(TARGET_LM32)
+ s.info.mach = bfd_mach_lm32;
+ s.info.print_insn = print_insn_lm32;
+#endif
+ if (!s.info.print_insn) {
+ monitor_printf(mon, "0x" TARGET_FMT_lx
+ ": Asm output not supported on this arch\n", pc);
+ return;
+ }
+
+ for(i = 0; i < nb_insn; i++) {
+ monitor_printf(mon, "0x" TARGET_FMT_lx ": ", pc);
+ count = s.info.print_insn(pc, &s.info);
+ monitor_printf(mon, "\n");
+ if (count < 0)
+ break;
+ pc += count;
+ }
+}
+#endif
Code Review / kvmfornfv.git / blobdiff