From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [7040] target-mips: optimize gen_cp0()
Date: Wed, 08 Apr 2009 21:47:36 +0000 [thread overview]
Message-ID: <E1LrfcO-0002ae-9G@cvs.savannah.gnu.org> (raw)
Revision: 7040
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=7040
Author: aurel32
Date: 2009-04-08 21:47:35 +0000 (Wed, 08 Apr 2009)
Log Message:
-----------
target-mips: optimize gen_cp0()
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 2009-04-08 21:29:37 UTC (rev 7039)
+++ trunk/target-mips/translate.c 2009-04-08 21:47:35 UTC (rev 7040)
@@ -3484,8 +3484,6 @@
default:
goto die;
}
- /* Stop translation as we may have switched the execution mode */
- ctx->bstate = BS_STOP;
break;
case 10:
switch (sel) {
@@ -3507,8 +3505,6 @@
default:
goto die;
}
- /* Stop translation as we may have switched the execution mode */
- ctx->bstate = BS_STOP;
break;
case 12:
switch (sel) {
@@ -3553,8 +3549,6 @@
default:
goto die;
}
- /* Stop translation as we may have switched the execution mode */
- ctx->bstate = BS_STOP;
break;
case 14:
switch (sel) {
@@ -4756,7 +4750,7 @@
ctx->bstate = BS_STOP;
break;
case 1:
- /* ignored */
+ /* ignored, read only */
rn = "Config1";
break;
case 2:
@@ -5350,21 +5344,14 @@
/* Treat as NOP. */
return;
}
- {
- TCGv t0 = tcg_temp_local_new();
-
- gen_mfc0(env, ctx, t0, rd, ctx->opcode & 0x7);
- gen_store_gpr(t0, rt);
- tcg_temp_free(t0);
- }
+ gen_mfc0(env, ctx, cpu_gpr[rt], rd, ctx->opcode & 0x7);
opn = "mfc0";
break;
case OPC_MTC0:
{
- TCGv t0 = tcg_temp_local_new();
+ TCGv t0 = tcg_temp_new();
gen_load_gpr(t0, rt);
- save_cpu_state(ctx, 1);
gen_mtc0(env, ctx, t0, rd, ctx->opcode & 0x7);
tcg_temp_free(t0);
}
@@ -5377,22 +5364,15 @@
/* Treat as NOP. */
return;
}
- {
- TCGv t0 = tcg_temp_local_new();
-
- gen_dmfc0(env, ctx, t0, rd, ctx->opcode & 0x7);
- gen_store_gpr(t0, rt);
- tcg_temp_free(t0);
- }
+ gen_dmfc0(env, ctx, cpu_gpr[rt], rd, ctx->opcode & 0x7);
opn = "dmfc0";
break;
case OPC_DMTC0:
check_insn(env, ctx, ISA_MIPS3);
{
- TCGv t0 = tcg_temp_local_new();
+ TCGv t0 = tcg_temp_new();
gen_load_gpr(t0, rt);
- save_cpu_state(ctx, 1);
gen_dmtc0(env, ctx, t0, rd, ctx->opcode & 0x7);
tcg_temp_free(t0);
}
@@ -5442,7 +5422,6 @@
case OPC_ERET:
opn = "eret";
check_insn(env, ctx, ISA_MIPS2);
- save_cpu_state(ctx, 1);
gen_helper_eret();
ctx->bstate = BS_EXCP;
break;
@@ -5453,7 +5432,6 @@
MIPS_INVAL(opn);
generate_exception(ctx, EXCP_RI);
} else {
- save_cpu_state(ctx, 1);
gen_helper_deret();
ctx->bstate = BS_EXCP;
}
reply other threads:[~2009-04-08 21:47 UTC|newest]
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