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target-ppc: convert PPC 440 instructions to TCG

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Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5836 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-11-30 17:26:29 +00:00
parent 1addc7c5a1
commit ef0d51af1e
5 changed files with 26 additions and 36 deletions
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2
target-ppc/helper.h
View File

@ -170,4 +170,6 @@ DEF_HELPER_1(load_74xx_tlbi, void, tl)
DEF_HELPER_1(602_mfrom, tl, tl)
#endif
DEF_HELPER_3(dlmzb, tl, tl, tl, i32)
#include "def-helper.h"

17
target-ppc/op.c
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@ -706,23 +706,6 @@ void OPPROTO op_4xx_tlbwe_hi (void)
/* 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)
{

25
target-ppc/op_helper.c
View File

@ -1999,24 +1999,39 @@ void do_store_403_pb (int num)
#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;
}
/*****************************************************************************/

3
target-ppc/op_helper.h
View File

@ -63,9 +63,6 @@ void do_4xx_tlbwe_lo (void);
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);

15
target-ppc/translate.c
View File

@ -5747,17 +5747,10 @@ GEN_HANDLER(wrteei, 0x1F, 0x03, 0x05, 0x000EFC01, PPC_WRTEE)
/* 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 */