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[Qemu-devel] [5836] target-ppc: convert PPC 440 instructions to TCG
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [5836] target-ppc: convert PPC 440 instructions to TCG |
Date: |
Sun, 30 Nov 2008 17:26:30 +0000 |
Revision: 5836
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5836
Author: aurel32
Date: 2008-11-30 17:26:29 +0000 (Sun, 30 Nov 2008)
Log Message:
-----------
target-ppc: convert PPC 440 instructions to TCG
Signed-off-by: Aurelien Jarno <address@hidden>
Modified Paths:
--------------
trunk/target-ppc/helper.h
trunk/target-ppc/op.c
trunk/target-ppc/op_helper.c
trunk/target-ppc/op_helper.h
trunk/target-ppc/translate.c
Modified: trunk/target-ppc/helper.h
===================================================================
--- trunk/target-ppc/helper.h 2008-11-30 16:25:37 UTC (rev 5835)
+++ trunk/target-ppc/helper.h 2008-11-30 17:26:29 UTC (rev 5836)
@@ -170,4 +170,6 @@
DEF_HELPER_1(602_mfrom, tl, tl)
#endif
+DEF_HELPER_3(dlmzb, tl, tl, tl, i32)
+
#include "def-helper.h"
Modified: trunk/target-ppc/op.c
===================================================================
--- trunk/target-ppc/op.c 2008-11-30 16:25:37 UTC (rev 5835)
+++ trunk/target-ppc/op.c 2008-11-30 17:26:29 UTC (rev 5836)
@@ -706,23 +706,6 @@
/* SPR micro-ops */
/* 440 specific */
-void OPPROTO op_440_dlmzb (void)
-{
- do_440_dlmzb();
- RETURN();
-}
-
-void OPPROTO op_440_dlmzb_update_Rc (void)
-{
- if (T0 == 8)
- T0 = 0x2;
- else if (T0 < 4)
- T0 = 0x4;
- else
- T0 = 0x8;
- RETURN();
-}
-
#if !defined(CONFIG_USER_ONLY)
void OPPROTO op_store_pir (void)
{
Modified: trunk/target-ppc/op_helper.c
===================================================================
--- trunk/target-ppc/op_helper.c 2008-11-30 16:25:37 UTC (rev 5835)
+++ trunk/target-ppc/op_helper.c 2008-11-30 17:26:29 UTC (rev 5836)
@@ -1999,24 +1999,39 @@
#endif
/* 440 specific */
-void do_440_dlmzb (void)
+target_ulong helper_dlmzb (target_ulong high, target_ulong low, uint32_t
update_Rc)
{
target_ulong mask;
int i;
i = 1;
for (mask = 0xFF000000; mask != 0; mask = mask >> 8) {
- if ((T0 & mask) == 0)
+ if ((high & mask) == 0) {
+ if (update_Rc) {
+ env->crf[0] = 0x4;
+ }
goto done;
+ }
i++;
}
for (mask = 0xFF000000; mask != 0; mask = mask >> 8) {
- if ((T1 & mask) == 0)
- break;
+ if ((low & mask) == 0) {
+ if (update_Rc) {
+ env->crf[0] = 0x8;
+ }
+ goto done;
+ }
i++;
}
+ if (update_Rc) {
+ env->crf[0] = 0x2;
+ }
done:
- T0 = i;
+ env->xer = (env->xer & ~0x7F) | i;
+ if (update_Rc) {
+ env->crf[0] |= xer_so;
+ }
+ return i;
}
/*****************************************************************************/
Modified: trunk/target-ppc/op_helper.h
===================================================================
--- trunk/target-ppc/op_helper.h 2008-11-30 16:25:37 UTC (rev 5835)
+++ trunk/target-ppc/op_helper.h 2008-11-30 17:26:29 UTC (rev 5836)
@@ -63,9 +63,6 @@
void do_4xx_tlbwe_hi (void);
#endif
-/* PowerPC 440 specific helpers */
-void do_440_dlmzb (void);
-
/* PowerPC 403 specific helpers */
#if !defined(CONFIG_USER_ONLY)
void do_load_403_pb (int num);
Modified: trunk/target-ppc/translate.c
===================================================================
--- trunk/target-ppc/translate.c 2008-11-30 16:25:37 UTC (rev 5835)
+++ trunk/target-ppc/translate.c 2008-11-30 17:26:29 UTC (rev 5836)
@@ -5747,17 +5747,10 @@
/* dlmzb */
GEN_HANDLER(dlmzb, 0x1F, 0x0E, 0x02, 0x00000000, PPC_440_SPEC)
{
- tcg_gen_mov_tl(cpu_T[0], cpu_gpr[rS(ctx->opcode)]);
- tcg_gen_mov_tl(cpu_T[1], cpu_gpr[rB(ctx->opcode)]);
- gen_op_440_dlmzb();
- tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], cpu_T[0]);
- tcg_gen_andi_tl(cpu_xer, cpu_xer, ~0x7F);
- tcg_gen_or_tl(cpu_xer, cpu_xer, cpu_T[0]);
- if (Rc(ctx->opcode)) {
- gen_op_440_dlmzb_update_Rc();
- tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_T[0]);
- tcg_gen_andi_i32(cpu_crf[0], cpu_crf[0], 0xf);
- }
+ TCGv_i32 t0 = tcg_const_i32(Rc(ctx->opcode));
+ gen_helper_dlmzb(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)],
+ cpu_gpr[rB(ctx->opcode)], t0);
+ tcg_temp_free_i32(t0);
}
/* mbar replaces eieio on 440 */
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