Revived GUEST_BASE support for usermode emulation targets [v5]
[qemu] / disas.c
diff --git a/disas.c b/disas.c
index 34b0474..af5a9ea 100644 (file)
--- a/disas.c
+++ b/disas.c
@@ -14,11 +14,8 @@ 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)
@@ -36,20 +33,14 @@ target_read_memory (bfd_vma memaddr,
                     int length,
                     struct disassemble_info *info)
 {
-    int i;
-    for(i = 0; i < length; i++) {
-        myaddr[i] = ldub_code(memaddr + i);
-    }
+    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.  */
@@ -58,7 +49,7 @@ perror_memory (status, memaddr, info)
     /* 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);
+                          "Address 0x%" PRIx64 " is out of bounds.\n", memaddr);
 }
 
 /* This could be in a separate file, to save miniscule amounts of space
@@ -69,19 +60,15 @@ perror_memory (status, memaddr, info)
    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%llx", 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;
 }
@@ -108,9 +95,40 @@ bfd_vma bfd_getb32 (const bfd_byte *addr)
   return (bfd_vma) v;
 }
 
-/* Disassemble this for me please... (debugging). 'flags' is only used
-   for i386: non zero means 16 bit code */
-void target_disas(FILE *out, target_ulong code, unsigned long size, int flags)
+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;
@@ -131,28 +149,63 @@ void target_disas(FILE *out, target_ulong code, unsigned long size, int flags)
 #if defined(TARGET_I386)
     if (flags == 2)
         disasm_info.mach = bfd_mach_x86_64;
-    else if (flags == 1) 
+    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;
+    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
-    fprintf(out, "Asm output not supported on this arch\n");
-    return;
+    print_insn = print_insn_little_mips;
 #endif
-
-    for (pc = code; pc < code + size; pc += count) {
-#if TARGET_LONG_BITS == 64        
-       fprintf(out, "0x%016llx:  ", pc);
+#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%08x:  ", pc);
+    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
         {
@@ -169,6 +222,13 @@ void target_disas(FILE *out, target_ulong code, unsigned long size, int flags)
        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;
+        }
     }
 }
 
@@ -197,26 +257,38 @@ void disas(FILE *out, void *code, unsigned long size)
 #elif defined(__x86_64__)
     disasm_info.mach = bfd_mach_x86_64;
     print_insn = print_insn_i386;
-#elif defined(__powerpc__)
+#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;
-#elif defined(__arm__) 
+#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");
+    fprintf(out, "0x%lx: Asm output not supported on this arch\n",
+           (long) code);
     return;
 #endif
-    for (pc = (unsigned long)code; pc < (unsigned long)code + size; pc += count) {
+    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 (is_host) {
-            fprintf(out, "%08x  ", (int)bfd_getl32((const bfd_byte *)pc));
-        }
+        fprintf(out, "%08x  ", (int)bfd_getl32((const bfd_byte *)pc));
 #endif
        count = print_insn(pc, &disasm_info);
        fprintf(out, "\n");
@@ -228,47 +300,34 @@ void disas(FILE *out, void *code, unsigned long size)
 /* Look up symbol for debugging purpose.  Returns "" if unknown. */
 const char *lookup_symbol(target_ulong orig_addr)
 {
-    unsigned int i;
-    /* Hack, because we know this is x86. */
-    Elf32_Sym *sym;
+    const char *symbol = "";
     struct syminfo *s;
-    
+
     for (s = syminfos; s; s = s->next) {
-       sym = s->disas_symtab;
-       for (i = 0; i < s->disas_num_syms; i++) {
-           if (sym[i].st_shndx == SHN_UNDEF
-               || sym[i].st_shndx >= SHN_LORESERVE)
-               continue;
-
-           if (ELF_ST_TYPE(sym[i].st_info) != STT_FUNC)
-               continue;
-
-           if (orig_addr >= sym[i].st_value
-               && orig_addr < sym[i].st_value + sym[i].st_size)
-               return s->disas_strtab + sym[i].st_name;
-       }
+        symbol = s->lookup_symbol(s, orig_addr);
+        if (symbol[0] != '\0') {
+            break;
+        }
     }
-    return "";
+
+    return symbol;
 }
 
 #if !defined(CONFIG_USER_ONLY)
 
-void term_vprintf(const char *fmt, va_list ap);
-void term_printf(const char *fmt, ...);
+#include "monitor.h"
 
 static int monitor_disas_is_physical;
+static CPUState *monitor_disas_env;
 
 static int
-monitor_read_memory (memaddr, myaddr, length, info)
-     bfd_vma memaddr;
-     bfd_byte *myaddr;
-     int length;
-     struct disassemble_info *info;
+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(cpu_single_env, memaddr,myaddr, length, 0);
+        cpu_memory_rw_debug(monitor_disas_env, memaddr,myaddr, length, 0);
     }
     return 0;
 }
@@ -277,19 +336,21 @@ static int monitor_fprintf(FILE *stream, const char *fmt, ...)
 {
     va_list ap;
     va_start(ap, fmt);
-    term_vprintf(fmt, ap);
+    monitor_vprintf((Monitor *)stream, fmt, ap);
     va_end(ap);
     return 0;
 }
 
-void monitor_disas(target_ulong pc, int nb_insn, int is_physical, int flags)
+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, NULL, monitor_fprintf);
+    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;
 
@@ -301,26 +362,47 @@ void monitor_disas(target_ulong pc, int nb_insn, int is_physical, int flags)
     disasm_info.endian = BFD_ENDIAN_LITTLE;
 #endif
 #if defined(TARGET_I386)
-    if (!flags)
-        disasm_info.mach = bfd_mach_i386_i386;
-    else
+    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
-    term_printf("Asm output not supported on this arch\n");
+    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++) {
-       term_printf("0x%08lx:  ", (unsigned long)pc);
+       monitor_printf(mon, "0x" TARGET_FMT_lx ":  ", pc);
        count = print_insn(pc, &disasm_info);
-       term_printf("\n");
+       monitor_printf(mon, "\n");
        if (count < 0)
            break;
         pc += count;