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[Qemu-devel] [PATCH for-2.5 09/30] m68k: add X flag helpers
From: |
Laurent Vivier |
Subject: |
[Qemu-devel] [PATCH for-2.5 09/30] m68k: add X flag helpers |
Date: |
Sun, 9 Aug 2015 22:13:28 +0200 |
Signed-off-by: Laurent Vivier <address@hidden>
---
target-m68k/helper.c | 12 +++++++++++-
target-m68k/helper.h | 4 +++-
target-m68k/translate.c | 29 +++++++++++++++++++++--------
3 files changed, 35 insertions(+), 10 deletions(-)
diff --git a/target-m68k/helper.c b/target-m68k/helper.c
index c6f5cc0..8c10fbc 100644
--- a/target-m68k/helper.c
+++ b/target-m68k/helper.c
@@ -465,7 +465,17 @@ uint32_t HELPER(addx_cc)(CPUM68KState *env, uint32_t op1,
uint32_t op2)
return res;
}
-uint32_t HELPER(xflag_lt)(uint32_t a, uint32_t b)
+uint32_t HELPER(xflag_lt_i8)(uint32_t a, uint32_t b)
+{
+ return (uint8_t)a < (uint8_t)b;
+}
+
+uint32_t HELPER(xflag_lt_i16)(uint32_t a, uint32_t b)
+{
+ return (uint16_t)a < (uint16_t)b;
+}
+
+uint32_t HELPER(xflag_lt_i32)(uint32_t a, uint32_t b)
{
return a < b;
}
diff --git a/target-m68k/helper.h b/target-m68k/helper.h
index 81c8e79..81fb7db 100644
--- a/target-m68k/helper.h
+++ b/target-m68k/helper.h
@@ -8,7 +8,9 @@ DEF_HELPER_3(subx_cc, i32, env, i32, i32)
DEF_HELPER_3(shl_cc, i32, env, i32, i32)
DEF_HELPER_3(shr_cc, i32, env, i32, i32)
DEF_HELPER_3(sar_cc, i32, env, i32, i32)
-DEF_HELPER_2(xflag_lt, i32, i32, i32)
+DEF_HELPER_2(xflag_lt_i8, i32, i32, i32)
+DEF_HELPER_2(xflag_lt_i16, i32, i32, i32)
+DEF_HELPER_2(xflag_lt_i32, i32, i32, i32)
DEF_HELPER_2(set_sr, void, env, i32)
DEF_HELPER_3(movec, void, env, i32, i32)
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index 80ac63a..5fa39db 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -488,6 +488,19 @@ static inline void gen_flush_flags(DisasContext *s)
} \
} while (0)
+#define SET_X_FLAG(opsize, a, b) do { \
+ switch (opsize) { \
+ case OS_BYTE: \
+ gen_helper_xflag_lt_i8(QREG_CC_X, a, b); break; \
+ case OS_WORD: \
+ gen_helper_xflag_lt_i16(QREG_CC_X, a, b); break; \
+ case OS_LONG: \
+ gen_helper_xflag_lt_i32(QREG_CC_X, a, b); break; \
+ default: \
+ abort(); \
+ } \
+} while (0)
+
static void gen_logic_cc(DisasContext *s, TCGv val, int opsize)
{
tcg_gen_mov_i32(QREG_CC_DEST, val);
@@ -1102,10 +1115,10 @@ DISAS_INSN(addsub)
}
if (add) {
tcg_gen_add_i32(dest, tmp, src);
- gen_helper_xflag_lt(QREG_CC_X, dest, src);
+ SET_X_FLAG(OS_LONG, dest, src);
set_cc_op(s, CC_OP_ADD);
} else {
- gen_helper_xflag_lt(QREG_CC_X, tmp, src);
+ SET_X_FLAG(OS_LONG, tmp, src);
tcg_gen_sub_i32(dest, tmp, src);
set_cc_op(s, CC_OP_SUB);
}
@@ -1317,7 +1330,7 @@ DISAS_INSN(arith_im)
break;
case 2: /* subi */
tcg_gen_mov_i32(dest, src1);
- gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im));
+ SET_X_FLAG(OS_LONG, dest, tcg_const_i32(im));
tcg_gen_subi_i32(dest, dest, im);
gen_update_cc_add(dest, tcg_const_i32(im));
set_cc_op(s, CC_OP_SUB);
@@ -1326,7 +1339,7 @@ DISAS_INSN(arith_im)
tcg_gen_mov_i32(dest, src1);
tcg_gen_addi_i32(dest, dest, im);
gen_update_cc_add(dest, tcg_const_i32(im));
- gen_helper_xflag_lt(QREG_CC_X, dest, tcg_const_i32(im));
+ SET_X_FLAG(OS_LONG, dest, tcg_const_i32(im));
set_cc_op(s, CC_OP_ADD);
break;
case 5: /* eori */
@@ -1456,7 +1469,7 @@ DISAS_INSN(neg)
tcg_gen_neg_i32(reg, src1);
set_cc_op(s, CC_OP_SUB);
gen_update_cc_add(reg, src1);
- gen_helper_xflag_lt(QREG_CC_X, tcg_const_i32(0), src1);
+ SET_X_FLAG(OS_LONG, tcg_const_i32(0), src1);
set_cc_op(s, CC_OP_SUB);
}
@@ -1696,13 +1709,13 @@ DISAS_INSN(addsubq)
} else {
src2 = tcg_const_i32(val);
if (insn & 0x0100) {
- gen_helper_xflag_lt(QREG_CC_X, dest, src2);
+ SET_X_FLAG(OS_LONG, dest, tcg_const_i32(val));
tcg_gen_subi_i32(dest, dest, val);
set_cc_op(s, CC_OP_SUB);
} else {
tcg_gen_addi_i32(dest, dest, val);
- gen_helper_xflag_lt(QREG_CC_X, dest, src2);
- set_cc_op(s, CC_OP_ADD);
+ SET_X_FLAG(OS_LONG, dest, tcg_const_i32(val));
+ SET_CC_OP(OS_LONG, ADD);
}
gen_update_cc_add(dest, src2);
}
--
2.4.3
- [Qemu-devel] [PATCH for-2.5 00/30] 680x0 instructions emulation, Laurent Vivier, 2015/08/09
- [Qemu-devel] [PATCH for-2.5 04/30] m68k: set disassembler mode to 680x0 or coldfire, Laurent Vivier, 2015/08/09
- [Qemu-devel] [PATCH for-2.5 03/30] m68k: introduce read_imXX() functions, Laurent Vivier, 2015/08/09
- [Qemu-devel] [PATCH for-2.5 09/30] m68k: add X flag helpers,
Laurent Vivier <=
- [Qemu-devel] [PATCH for-2.5 10/30] m68k: tst bugfix, Laurent Vivier, 2015/08/09
- [Qemu-devel] [PATCH for-2.5 11/30] m68k: improve clr/moveq, Laurent Vivier, 2015/08/09
- [Qemu-devel] [PATCH for-2.5 06/30] m68k: REG() macro cleanup, Laurent Vivier, 2015/08/09
- [Qemu-devel] [PATCH for-2.5 02/30] m68k: manage scaled index, Laurent Vivier, 2015/08/09
- [Qemu-devel] [PATCH for-2.5 05/30] m68k: define operand sizes, Laurent Vivier, 2015/08/09