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authorRichard Henderson <rth@twiddle.net>2014-03-19 11:41:14 -0700
committerRichard Henderson <rth@twiddle.net>2014-04-17 11:47:42 -0700
commit5e5863ecf1334cae944549dedbc43f2779599bfb (patch)
tree3681b05638b34420ac9ef74828f1706d48fd5788 /target-alpha
parent9a734d64f906e44dfe8be7ba5bb9f4c7eee8d0e8 (diff)
downloadqemu-arm-5e5863ecf1334cae944549dedbc43f2779599bfb.tar.gz
target-alpha: Convert gen_ins_h/l to source/sink
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-alpha')
-rw-r--r--target-alpha/translate.c111
1 files changed, 50 insertions, 61 deletions
diff --git a/target-alpha/translate.c b/target-alpha/translate.c
index c606183c69..5e52674497 100644
--- a/target-alpha/translate.c
+++ b/target-alpha/translate.c
@@ -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 */