From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [6934] target-mips: gen_bshfl()
Date: Sun, 29 Mar 2009 01:18:35 +0000 [thread overview]
Message-ID: <E1LnjfX-00083U-9m@cvs.savannah.gnu.org> (raw)
Revision: 6934
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6934
Author: aurel32
Date: 2009-03-29 01:18:34 +0000 (Sun, 29 Mar 2009)
Log Message:
-----------
target-mips: gen_bshfl()
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Modified Paths:
--------------
trunk/target-mips/translate.c
Modified: trunk/target-mips/translate.c
===================================================================
--- trunk/target-mips/translate.c 2009-03-29 01:18:24 UTC (rev 6933)
+++ trunk/target-mips/translate.c 2009-03-29 01:18:34 UTC (rev 6934)
@@ -2619,56 +2619,72 @@
static void gen_bshfl (DisasContext *ctx, uint32_t op2, int rt, int rd)
{
- TCGv t0 = tcg_temp_new();
- TCGv t1 = tcg_temp_new();
+ TCGv t0;
- gen_load_gpr(t1, rt);
+ if (rd == 0) {
+ /* If no destination, treat it as a NOP. */
+ MIPS_DEBUG("NOP");
+ return;
+ }
+
+ t0 = tcg_temp_new();
+ gen_load_gpr(t0, rt);
switch (op2) {
case OPC_WSBH:
- tcg_gen_shri_tl(t0, t1, 8);
- tcg_gen_andi_tl(t0, t0, 0x00FF00FF);
- tcg_gen_shli_tl(t1, t1, 8);
- tcg_gen_andi_tl(t1, t1, ~0x00FF00FF);
- tcg_gen_or_tl(t0, t0, t1);
- tcg_gen_ext32s_tl(t0, t0);
+ {
+ TCGv t1 = tcg_temp_new();
+
+ tcg_gen_shri_tl(t1, t0, 8);
+ tcg_gen_andi_tl(t1, t1, 0x00FF00FF);
+ tcg_gen_shli_tl(t0, t0, 8);
+ tcg_gen_andi_tl(t0, t0, ~0x00FF00FF);
+ tcg_gen_or_tl(t0, t0, t1);
+ tcg_temp_free(t1);
+ tcg_gen_ext32s_tl(cpu_gpr[rd], t0);
+ }
break;
case OPC_SEB:
- tcg_gen_ext8s_tl(t0, t1);
+ tcg_gen_ext8s_tl(cpu_gpr[rd], t0);
break;
case OPC_SEH:
- tcg_gen_ext16s_tl(t0, t1);
+ tcg_gen_ext16s_tl(cpu_gpr[rd], t0);
break;
#if defined(TARGET_MIPS64)
case OPC_DSBH:
- gen_load_gpr(t1, rt);
- tcg_gen_shri_tl(t0, t1, 8);
- tcg_gen_andi_tl(t0, t0, 0x00FF00FF00FF00FFULL);
- tcg_gen_shli_tl(t1, t1, 8);
- tcg_gen_andi_tl(t1, t1, ~0x00FF00FF00FF00FFULL);
- tcg_gen_or_tl(t0, t0, t1);
+ {
+ TCGv t1 = tcg_temp_new();
+
+ tcg_gen_shri_tl(t1, t0, 8);
+ tcg_gen_andi_tl(t1, t1, 0x00FF00FF00FF00FFULL);
+ tcg_gen_shli_tl(t0, t0, 8);
+ tcg_gen_andi_tl(t0, t0, ~0x00FF00FF00FF00FFULL);
+ tcg_gen_or_tl(cpu_gpr[rd], t0, t1);
+ tcg_temp_free(t1);
+ }
break;
case OPC_DSHD:
- gen_load_gpr(t1, rt);
- tcg_gen_shri_tl(t0, t1, 16);
- tcg_gen_andi_tl(t0, t0, 0x0000FFFF0000FFFFULL);
- tcg_gen_shli_tl(t1, t1, 16);
- tcg_gen_andi_tl(t1, t1, ~0x0000FFFF0000FFFFULL);
- tcg_gen_or_tl(t1, t0, t1);
- tcg_gen_shri_tl(t0, t1, 32);
- tcg_gen_shli_tl(t1, t1, 32);
- tcg_gen_or_tl(t0, t0, t1);
+ {
+ TCGv t1 = tcg_temp_new();
+
+ tcg_gen_shri_tl(t1, t0, 16);
+ tcg_gen_andi_tl(t1, t1, 0x0000FFFF0000FFFFULL);
+ tcg_gen_shli_tl(t0, t0, 16);
+ tcg_gen_andi_tl(t0, t0, ~0x0000FFFF0000FFFFULL);
+ tcg_gen_or_tl(t0, t0, t1);
+ tcg_gen_shri_tl(t1, t0, 32);
+ tcg_gen_shli_tl(t0, t0, 32);
+ tcg_gen_or_tl(cpu_gpr[rd], t0, t1);
+ tcg_temp_free(t1);
+ }
break;
#endif
default:
MIPS_INVAL("bsfhl");
generate_exception(ctx, EXCP_RI);
tcg_temp_free(t0);
- tcg_temp_free(t1);
return;
}
- gen_store_gpr(t0, rd);
tcg_temp_free(t0);
- tcg_temp_free(t1);
}
#ifndef CONFIG_USER_ONLY
reply other threads:[~2009-03-29 1:18 UTC|newest]
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