Signed-off-by: Tomek Grabiec <tgrab...@gmail.com>
---
arch/x86/emit-code.c | 12 ++++++++++--
arch/x86/include/arch/instruction.h | 3 ++-
arch/x86/insn-selector_32.brg | 6 +++++-
arch/x86/lir-printer.c | 12 ++++++++++--
arch/x86/use-def.c | 3 ++-
5 files changed, 29 insertions(+), 7 deletions(-)
diff --git a/arch/x86/emit-code.c b/arch/x86/emit-code.c
index 2a63e50..20fc9a8 100644
--- a/arch/x86/emit-code.c
+++ b/arch/x86/emit-code.c
@@ -604,13 +604,20 @@ static void emit_mov_reg_reg(struct buffer *buf, struct
operand *src,
__emit_mov_reg_reg(buf, mach_reg(&src->reg), mach_reg(&dest->reg));
}
-static void emit_movsx_reg_reg(struct buffer *buf, struct operand *src,
+static void emit_movsx_8_reg_reg(struct buffer *buf, struct operand *src,
struct operand *dest)
{
emit(buf, 0x0f);
__emit_reg_reg(buf, 0xbe, mach_reg(&dest->reg), mach_reg(&src->reg));
}
+static void emit_movsx_16_reg_reg(struct buffer *buf, struct operand *src,
+ struct operand *dest)
+{
+ emit(buf, 0x0f);
+ __emit_reg_reg(buf, 0xbf, mach_reg(&dest->reg), mach_reg(&src->reg));
+}
+
static void
emit_mov_memlocal_reg(struct buffer *buf, struct operand *src, struct operand
*dest)
{
@@ -1237,7 +1244,8 @@ struct emitter emitters[] = {
DECL_EMITTER(INSN_MOV_REG_MEMLOCAL, emit_mov_reg_memlocal,
TWO_OPERANDS),
DECL_EMITTER(INSN_MOV_FREG_MEMLOCAL, emit_mov_freg_memlocal,
TWO_OPERANDS),
DECL_EMITTER(INSN_MOV_REG_REG, emit_mov_reg_reg, TWO_OPERANDS),
- DECL_EMITTER(INSN_MOVSX_REG_REG, emit_movsx_reg_reg, TWO_OPERANDS),
+ DECL_EMITTER(INSN_MOVSX_8_REG_REG, emit_movsx_8_reg_reg, TWO_OPERANDS),
+ DECL_EMITTER(INSN_MOVSX_16_REG_REG, emit_movsx_16_reg_reg,
TWO_OPERANDS),
DECL_EMITTER(INSN_MUL_MEMBASE_EAX, emit_mul_membase_eax, TWO_OPERANDS),
DECL_EMITTER(INSN_MUL_REG_EAX, emit_mul_reg_eax, TWO_OPERANDS),
DECL_EMITTER(INSN_MUL_REG_REG, emit_mul_reg_reg, TWO_OPERANDS),
diff --git a/arch/x86/include/arch/instruction.h
b/arch/x86/include/arch/instruction.h
index 42c3fbb..c852bd3 100644
--- a/arch/x86/include/arch/instruction.h
+++ b/arch/x86/include/arch/instruction.h
@@ -101,7 +101,8 @@ enum insn_type {
INSN_MOV_REG_REG,
INSN_MOV_MEMBASE_XMM,
INSN_MOV_XMM_MEMBASE,
- INSN_MOVSX_REG_REG,
+ INSN_MOVSX_8_REG_REG,
+ INSN_MOVSX_16_REG_REG,
INSN_MUL_MEMBASE_EAX,
INSN_MUL_REG_EAX,
INSN_MUL_REG_REG,
diff --git a/arch/x86/insn-selector_32.brg b/arch/x86/insn-selector_32.brg
index 4d582a0..02e0cf2 100644
--- a/arch/x86/insn-selector_32.brg
+++ b/arch/x86/insn-selector_32.brg
@@ -1291,7 +1291,11 @@ reg: EXPR_CONVERSION(reg)
} else if (src->vm_type == J_INT && expr->vm_type == J_BYTE) {
state->reg1 = get_var(s->b_parent);
- select_insn(s, tree, reg_reg_insn(INSN_MOVSX_REG_REG,
state->left->reg1, state->reg1));
+ select_insn(s, tree, reg_reg_insn(INSN_MOVSX_8_REG_REG,
state->left->reg1, state->reg1));
+ } else if (src->vm_type == J_INT && expr->vm_type == J_CHAR) {
+ state->reg1 = get_var(s->b_parent);
+
+ select_insn(s, tree, reg_reg_insn(INSN_MOVSX_16_REG_REG,
state->left->reg1, state->reg1));
} else {
printf("%d to %d\n", src->vm_type, expr->vm_type);
assert(!"conversion not implemented");
diff --git a/arch/x86/lir-printer.c b/arch/x86/lir-printer.c
index ba0d276..b5abf63 100644
--- a/arch/x86/lir-printer.c
+++ b/arch/x86/lir-printer.c
@@ -460,13 +460,20 @@ static int print_mov_reg_reg(struct string *str, struct
insn *insn)
return print_reg_reg(str, insn);
}
-static int print_movsx_reg_reg(struct string *str, struct insn *insn)
+static int print_movsx_8_reg_reg(struct string *str, struct insn *insn)
{
print_func_name(str);
print_reg_reg(str, insn);
return str_append(str, "(8bit->32bit)");
}
+static int print_movsx_16_reg_reg(struct string *str, struct insn *insn)
+{
+ print_func_name(str);
+ print_reg_reg(str, insn);
+ return str_append(str, "(16bit->32bit)");
+}
+
static int print_mul_membase_eax(struct string *str, struct insn *insn)
{
print_func_name(str);
@@ -672,7 +679,8 @@ static print_insn_fn insn_printers[] = {
[INSN_MOV_REG_MEMLOCAL] = print_mov_reg_memlocal,
[INSN_MOV_FREG_MEMLOCAL] = print_mov_freg_memlocal,
[INSN_MOV_REG_REG] = print_mov_reg_reg,
- [INSN_MOVSX_REG_REG] = print_movsx_reg_reg,
+ [INSN_MOVSX_8_REG_REG] = print_movsx_8_reg_reg,
+ [INSN_MOVSX_16_REG_REG] = print_movsx_16_reg_reg,
[INSN_MUL_MEMBASE_EAX] = print_mul_membase_eax,
[INSN_MUL_REG_EAX] = print_mul_reg_eax,
[INSN_MUL_REG_REG] = print_mul_reg_reg,
diff --git a/arch/x86/use-def.c b/arch/x86/use-def.c
index 6e5a02c..10c2dcf 100644
--- a/arch/x86/use-def.c
+++ b/arch/x86/use-def.c
@@ -75,7 +75,8 @@ static struct insn_info insn_infos[] = {
DECLARE_INFO(INSN_MOV_REG_MEMLOCAL, USE_SRC),
DECLARE_INFO(INSN_MOV_FREG_MEMLOCAL, USE_SRC),
DECLARE_INFO(INSN_MOV_REG_REG, USE_SRC | DEF_DST),
- DECLARE_INFO(INSN_MOVSX_REG_REG, USE_SRC | DEF_DST),
+ DECLARE_INFO(INSN_MOVSX_8_REG_REG, USE_SRC | DEF_DST),
+ DECLARE_INFO(INSN_MOVSX_16_REG_REG, USE_SRC | DEF_DST),
DECLARE_INFO(INSN_MUL_MEMBASE_EAX, USE_SRC | DEF_DST | DEF_EDX |
DEF_EAX),
DECLARE_INFO(INSN_MUL_REG_EAX, USE_SRC | DEF_DST | DEF_EDX | DEF_EAX),
DECLARE_INFO(INSN_MUL_REG_REG, USE_SRC | DEF_DST),
--
1.6.0.6
------------------------------------------------------------------------------
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