Skip to content

Q
qemu

openeuler / qemu

通知 10
Star 0
Fork 0
Q
qemu

体验新版 GitCode，发现更多精彩内容 >>

提交 5e5863ec 编写于 作者: R Richard Henderson
浏览文件
操作

target-alpha: Convert gen_ins_h/l to source/sink 

Signed-off-by: NRichard Henderson <rth@twiddle.net>
上级 9a734d64
隐藏空白更改
内联 并排
Showing with 50 addition and 61 deletion
target-alpha/translate.c
浏览文件 @ 5e5863ec
......@@ -1235,75 +1235,64 @@ static void gen_ext_l(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
}
/* INSWH, INSLH, INSQH */
static void gen_ins_h(int ra, int rb, int rc, int islit,
static void gen_ins_h(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
uint8_t lit, uint8_t byte_mask)
{
if (unlikely(rc == 31)) {
return;
} else if (unlikely(ra == 31) || (islit && (lit & 7) == 0)) {
tcg_gen_movi_i64(cpu_ir[rc], 0);
} else {
TCGv tmp = tcg_temp_new();
TCGv tmp = tcg_temp_new();
/* The instruction description has us left-shift the byte mask
and extract bits <15:8> and apply that zap at the end. This
is equivalent to simply performing the zap first and shifting
afterward. */
gen_zapnoti (tmp, cpu_ir[ra], byte_mask);
/* The instruction description has us left-shift the byte mask and extract
bits <15:8> and apply that zap at the end. This is equivalent to simply
performing the zap first and shifting afterward. */
gen_zapnoti(tmp, va, byte_mask);
if (islit) {
/* Note that we have handled the lit==0 case above. */
tcg_gen_shri_i64 (cpu_ir[rc], tmp, 64 - (lit & 7) * 8);
if (islit) {
lit &= 7;
if (unlikely(lit == 0)) {
tcg_gen_movi_i64(vc, 0);
} else {
TCGv shift = tcg_temp_new();
/* If (B & 7) == 0, we need to shift by 64 and leave a zero.
Do this portably by splitting the shift into two parts:
shift_count-1 and 1. Arrange for the -1 by using
ones-complement instead of twos-complement in the negation:
~((B & 7) * 8) & 63. */
tcg_gen_andi_i64(shift, cpu_ir[rb], 7);
tcg_gen_shli_i64(shift, shift, 3);
tcg_gen_not_i64(shift, shift);
tcg_gen_andi_i64(shift, shift, 0x3f);
tcg_gen_shr_i64(cpu_ir[rc], tmp, shift);
tcg_gen_shri_i64(cpu_ir[rc], cpu_ir[rc], 1);
tcg_temp_free(shift);
tcg_gen_shri_i64(vc, tmp, 64 - lit * 8);
}
tcg_temp_free(tmp);
} else {
TCGv shift = tcg_temp_new();
/* If (B & 7) == 0, we need to shift by 64 and leave a zero. Do this
portably by splitting the shift into two parts: shift_count-1 and 1.
Arrange for the -1 by using ones-complement instead of
twos-complement in the negation: ~(B * 8) & 63. */
tcg_gen_shli_i64(shift, load_gpr(ctx, rb), 3);
tcg_gen_not_i64(shift, shift);
tcg_gen_andi_i64(shift, shift, 0x3f);
tcg_gen_shr_i64(vc, tmp, shift);
tcg_gen_shri_i64(vc, vc, 1);
tcg_temp_free(shift);
}
tcg_temp_free(tmp);
}
/* INSBL, INSWL, INSLL, INSQL */
static void gen_ins_l(int ra, int rb, int rc, int islit,
static void gen_ins_l(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit,
uint8_t lit, uint8_t byte_mask)
{
if (unlikely(rc == 31)) {
return;
} else if (unlikely(ra == 31)) {
tcg_gen_movi_i64(cpu_ir[rc], 0);
} else {
TCGv tmp = tcg_temp_new();
TCGv tmp = tcg_temp_new();
/* The instruction description has us left-shift the byte mask
the same number of byte slots as the data and apply the zap
at the end. This is equivalent to simply performing the zap
first and shifting afterward. */
gen_zapnoti (tmp, cpu_ir[ra], byte_mask);
/* The instruction description has us left-shift the byte mask
the same number of byte slots as the data and apply the zap
at the end. This is equivalent to simply performing the zap
first and shifting afterward. */
gen_zapnoti(tmp, va, byte_mask);
if (islit) {
tcg_gen_shli_i64(cpu_ir[rc], tmp, (lit & 7) * 8);
} else {
TCGv shift = tcg_temp_new();
tcg_gen_andi_i64(shift, cpu_ir[rb], 7);
tcg_gen_shli_i64(shift, shift, 3);
tcg_gen_shl_i64(cpu_ir[rc], tmp, shift);
tcg_temp_free(shift);
}
tcg_temp_free(tmp);
if (islit) {
tcg_gen_shli_i64(vc, tmp, (lit & 7) * 8);
} else {
TCGv shift = tcg_temp_new();
tcg_gen_andi_i64(shift, load_gpr(ctx, rb), 7);
tcg_gen_shli_i64(shift, shift, 3);
tcg_gen_shl_i64(vc, tmp, shift);
tcg_temp_free(shift);
}
tcg_temp_free(tmp);
}
/* MSKWH, MSKLH, MSKQH */
......@@ -2094,7 +2083,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x0B:
/* INSBL */
gen_ins_l(ra, rb, rc, islit, lit, 0x01);
gen_ins_l(ctx, vc, va, rb, islit, lit, 0x01);
break;
case 0x12:
/* MSKWL */
......@@ -2106,7 +2095,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x1B:
/* INSWL */
gen_ins_l(ra, rb, rc, islit, lit, 0x03);
gen_ins_l(ctx, vc, va, rb, islit, lit, 0x03);
break;
case 0x22:
/* MSKLL */
......@@ -2118,7 +2107,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x2B:
/* INSLL */
gen_ins_l(ra, rb, rc, islit, lit, 0x0f);
gen_ins_l(ctx, vc, va, rb, islit, lit, 0x0f);
break;
case 0x30:
/* ZAP */
......@@ -2162,7 +2151,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x3B:
/* INSQL */
gen_ins_l(ra, rb, rc, islit, lit, 0xff);
gen_ins_l(ctx, vc, va, rb, islit, lit, 0xff);
break;
case 0x3C:
/* SRA */
......@@ -2182,7 +2171,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x57:
/* INSWH */
gen_ins_h(ra, rb, rc, islit, lit, 0x03);
gen_ins_h(ctx, vc, va, rb, islit, lit, 0x03);
break;
case 0x5A:
/* EXTWH */
......@@ -2194,7 +2183,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x67:
/* INSLH */
gen_ins_h(ra, rb, rc, islit, lit, 0x0f);
gen_ins_h(ctx, vc, va, rb, islit, lit, 0x0f);
break;
case 0x6A:
/* EXTLH */
......@@ -2206,7 +2195,7 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x77:
/* INSQH */
gen_ins_h(ra, rb, rc, islit, lit, 0xff);
gen_ins_h(ctx, vc, va, rb, islit, lit, 0xff);
break;
case 0x7A:
/* EXTQH */
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或