* opcode/i386.h: Add multiple inclusion protection.

	(EAX_REG_NUM,ECX_REG_NUM,EDX_REGNUM,EBX_REG_NUM,ESI_REG_NUM)
	(EDI_REG_NUM): New macros.
	(MODRM_MOD_FIELD,MODRM_REG_FIELD,MODRM_RM_FIELD): New macros.
	(SIB_SCALE_FIELD,SIB_INDEX_FIELD,SIB_BASE_FIELD): New macros.
	(REG_PREFIX_P): New macro.

	* amd64-tdep.h (amd64_displaced_step_copy_insn): Declare.
	(amd64_displaced_step_fixup): Declare.
	* amd64-tdep.c: #include opcode/i386.h, dis-asm.h.
	(amd64_arch_regmap): Move out of amd64_analyze_stack_align
	and make static global.
	(amd64_arch_regmap_len): New static global.
	(amd64_arch_reg_to_regnum): New function.
	(struct amd64_insn): New struct.
	(struct displaced_step_closure): New struct.
	(onebyte_has_modrm,twobyte_has_modrm): New static globals.
	(rex_prefix_p,skip_prefixes)
	(amd64_insn_length_fprintf,amd64_insn_length_init_dis)
	(amd64_insn_length,amd64_get_unused_input_int_reg)
	(amd64_get_insn_details,fixup_riprel,fixup_displaced_copy)
	(amd64_displaced_step_copy_insn)
	(amd64_absolute_jmp_p,amd64_absolute_call_p,amd64_ret_p)
	(amd64_call_p,amd64_breakpoint_p,amd64_syscall_p)
	(amd64_displaced_step_fixup): New functions.
	* amd64-linux-tdep.c: #include arch-utils.h.
	(amd64_linux_init_abi): Install displaced stepping support.

	* gdb.arch/amd64-disp-step.S: New file.
	* gdb.arch/amd64-disp-step.exp: New file.
	* gdb.arch/i386-disp-step.S: New file.
	* gdb.arch/i386-disp-step.exp: New file.

diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index 389bd91..c8c5ef6 100644 (file)
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,12 @@
+2009-01-28  Doug Evans  <dje@google.com>
+
+       * opcode/i386.h: Add multiple inclusion protection.
+       (EAX_REG_NUM,ECX_REG_NUM,EDX_REGNUM,EBX_REG_NUM,ESI_REG_NUM)
+       (EDI_REG_NUM): New macros.
+       (MODRM_MOD_FIELD,MODRM_REG_FIELD,MODRM_RM_FIELD): New macros.
+       (SIB_SCALE_FIELD,SIB_INDEX_FIELD,SIB_BASE_FIELD): New macros.
+       (REG_PREFIX_P): New macro.
+
 2009-01-09  Peter Bergner  <bergner@vnet.ibm.com>
 
        * ppc.h (struct powerpc_opcode): New field "deprecated".

diff --git a/include/opcode/i386.h b/include/opcode/i386.h
index f59eeea..4311cd6 100644 (file)
--- a/include/opcode/i386.h
+++ b/include/opcode/i386.h
@@ -35,6 +35,9 @@
 
    The affected opcode map is dceX, dcfX, deeX, defX.  */
 
+#ifndef OPCODE_I386_H
+#define OPCODE_I386_H
+
 #ifndef SYSV386_COMPAT
 /* Set non-zero for broken, compatible instructions.  Set to zero for
    non-broken opcodes at your peril.  gcc generates SystemV/386
@@ -72,8 +75,14 @@
 #define NOP_OPCODE (char) 0x90
 
 /* register numbers */
-#define EBP_REG_NUM 5
+#define EAX_REG_NUM 0
+#define ECX_REG_NUM 1
+#define EDX_REG_NUM 2
+#define EBX_REG_NUM 3
 #define ESP_REG_NUM 4
+#define EBP_REG_NUM 5
+#define ESI_REG_NUM 6
+#define EDI_REG_NUM 7
 
 /* modrm_byte.regmem for twobyte escape */
 #define ESCAPE_TO_TWO_BYTE_ADDRESSING ESP_REG_NUM
@@ -87,9 +96,22 @@
 #define REGMEM_FIELD_HAS_REG 0x3/* always = 0x3 */
 #define REGMEM_FIELD_HAS_MEM (~REGMEM_FIELD_HAS_REG)
 
+/* Extract fields from the mod/rm byte.  */
+#define MODRM_MOD_FIELD(modrm) (((modrm) >> 6) & 3)
+#define MODRM_REG_FIELD(modrm) (((modrm) >> 3) & 7)
+#define MODRM_RM_FIELD(modrm)  (((modrm) >> 0) & 7)
+
+/* Extract fields from the sib byte.  */
+#define SIB_SCALE_FIELD(sib) (((sib) >> 6) & 3)
+#define SIB_INDEX_FIELD(sib) (((sib) >> 3) & 7)
+#define SIB_BASE_FIELD(sib)  (((sib) >> 0) & 7)
+
 /* x86-64 extension prefix.  */
 #define REX_OPCODE     0x40
 
+/* Non-zero if OPCODE is the rex prefix.  */
+#define REX_PREFIX_P(opcode) (((opcode) & 0xf0) == REX_OPCODE)
+
 /* Indicates 64 bit operand size.  */
 #define REX_W  8
 /* High extension to reg field of modrm byte.  */
@@ -113,3 +135,5 @@
 
 /* max size of register name in insn mnemonics.  */
 #define MAX_REG_NAME_SIZE 8
+
+#endif /* OPCODE_I386_H */