It's needed to implement monoburg rule reg: OP_XOR(reg, reg)
Signed-off-by: Tomek Grabiec <[email protected]>
---
arch/x86/emit-code.c | 7 +++++++
arch/x86/include/arch/instruction.h | 1 +
arch/x86/lir-printer.c | 7 +++++++
arch/x86/use-def.c | 1 +
4 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/arch/x86/emit-code.c b/arch/x86/emit-code.c
index 7ded6ea..1f6a699 100644
--- a/arch/x86/emit-code.c
+++ b/arch/x86/emit-code.c
@@ -919,6 +919,12 @@ static void emit_or_reg_reg(struct buffer *buf, struct
operand *src,
emit_reg_reg(buf, 0x0b, dest, src);
}
+static void emit_xor_reg_reg(struct buffer *buf, struct operand *src,
+ struct operand *dest)
+{
+ emit_reg_reg(buf, 0x33, dest, src);
+}
+
static void __emit_add_imm_reg(struct buffer *buf, long imm, enum machine_reg
reg)
{
emit_alu_imm_reg(buf, 0x00, imm, reg);
@@ -1061,6 +1067,7 @@ struct emitter emitters[] = {
DECL_EMITTER(INSN_TEST_MEMBASE_REG, emit_test_membase_reg,
TWO_OPERANDS),
DECL_EMITTER(INSN_XOR_MEMBASE_REG, emit_xor_membase_reg, TWO_OPERANDS),
DECL_EMITTER(INSN_XOR_IMM_REG, emit_xor_imm_reg, TWO_OPERANDS),
+ DECL_EMITTER(INSN_XOR_REG_REG, emit_xor_reg_reg, TWO_OPERANDS),
};
/*
diff --git a/arch/x86/include/arch/instruction.h
b/arch/x86/include/arch/instruction.h
index 9dd5e3c..cb8128c 100644
--- a/arch/x86/include/arch/instruction.h
+++ b/arch/x86/include/arch/instruction.h
@@ -112,6 +112,7 @@ enum insn_type {
INSN_TEST_MEMBASE_REG,
INSN_XOR_MEMBASE_REG,
INSN_XOR_IMM_REG,
+ INSN_XOR_REG_REG,
#ifdef CONFIG_X86_64
INSN64_ADD_IMM_REG,
diff --git a/arch/x86/lir-printer.c b/arch/x86/lir-printer.c
index 8b4bc7f..28d76a0 100644
--- a/arch/x86/lir-printer.c
+++ b/arch/x86/lir-printer.c
@@ -504,6 +504,12 @@ static int print_xor_imm_reg(struct string *str, struct
insn *insn)
return print_imm_reg(str, insn);
}
+static int print_xor_reg_reg(struct string *str, struct insn *insn)
+{
+ print_func_name(str);
+ return print_reg_reg(str, insn);
+}
+
typedef int (*print_insn_fn) (struct string *str, struct insn *insn);
static print_insn_fn insn_printers[] = {
@@ -565,6 +571,7 @@ static print_insn_fn insn_printers[] = {
[INSN_TEST_MEMBASE_REG] = print_test_membase_reg,
[INSN_XOR_MEMBASE_REG] = print_xor_membase_reg,
[INSN_XOR_IMM_REG] = print_xor_imm_reg,
+ [INSN_XOR_REG_REG] = print_xor_reg_reg,
};
int lir_print(struct insn *insn, struct string *str)
diff --git a/arch/x86/use-def.c b/arch/x86/use-def.c
index 12e4720..dcbdd18 100644
--- a/arch/x86/use-def.c
+++ b/arch/x86/use-def.c
@@ -85,6 +85,7 @@ static struct insn_info insn_infos[] = {
DECLARE_INFO(INSN_TEST_MEMBASE_REG, USE_SRC | USE_DST | DEF_NONE),
DECLARE_INFO(INSN_XOR_MEMBASE_REG, USE_SRC | DEF_DST),
DECLARE_INFO(INSN_XOR_IMM_REG, USE_SRC | DEF_DST),
+ DECLARE_INFO(INSN_XOR_REG_REG, USE_SRC | DEF_DST),
};
static inline struct insn_info *get_info(struct insn *insn)
--
1.6.0.6
------------------------------------------------------------------------------
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