full system SPARC emulation (Blue Swirl)

[qemu.git] / disas.c

diff --git a/disas.c b/disas.c
index 81ba50a964846eba026756e82543fcd45426c79a..ccdcd2450e3e623a3972784fb01b12fc3545a3d4 100644 (file)
--- a/disas.c
+++ b/disas.c
@@ -1,10 +1,13 @@
 /* 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;
@@ -19,13 +22,31 @@ buffer_read_memory (memaddr, myaddr, length, info)
      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;
+}
+
+#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.  */
@@ -103,6 +124,12 @@ void disas(FILE *out, void *code, unsigned long size, int is_host, int flags)
 
     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;
@@ -113,9 +140,12 @@ void disas(FILE *out, void *code, unsigned long size, int is_host, int flags)
 #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__)
@@ -144,6 +174,8 @@ void disas(FILE *out, void *code, unsigned long size, int is_host, int flags)
        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;
@@ -187,3 +219,80 @@ const char *lookup_symbol(void *orig_addr)
     }
     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
+    fprintf(out, "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