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suppressed JUMP_TB (Paul Brook) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1594 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-10-30 21:39:19 +00:00
parent d5d11eac6c
commit c53be33474
7 changed files with 116 additions and 60 deletions
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9
exec-all.h
View File

@ -365,15 +365,6 @@ dummy_label ## n: ;\
#endif
/* XXX: will be suppressed */
#define JUMP_TB(opname, tbparam, n, eip)\
do {\
GOTO_TB(opname, tbparam, n);\
T0 = (long)(tbparam) + (n);\
EIP = (int32_t)eip;\
EXIT_TB();\
} while (0)
extern CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4];
extern CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
extern void *io_mem_opaque[IO_MEM_NB_ENTRIES];

8
target-arm/op.c
View File

@ -346,14 +346,14 @@ void OPPROTO op_test_le(void)
FORCE_RET();
}
void OPPROTO op_jmp0(void)
void OPPROTO op_goto_tb0(void)
{
JUMP_TB(op_jmp0, PARAM1, 0, PARAM2);
GOTO_TB(op_goto_tb0, PARAM1, 0);
}
void OPPROTO op_jmp1(void)
void OPPROTO op_goto_tb1(void)
{
JUMP_TB(op_jmp1, PARAM1, 1, PARAM2);
GOTO_TB(op_goto_tb1, PARAM1, 1);
}
void OPPROTO op_exit_tb(void)

25
target-arm/translate.c
View File

@ -43,6 +43,12 @@ typedef struct DisasContext {
#define DISAS_JUMP_NEXT 4
#ifdef USE_DIRECT_JUMP
#define TBPARAM(x)
#else
#define TBPARAM(x) (long)(x)
#endif
/* XXX: move that elsewhere */
static uint16_t *gen_opc_ptr;
static uint32_t *gen_opparam_ptr;
@ -897,6 +903,18 @@ static int disas_vfp_insn(CPUState * env, DisasContext *s, uint32_t insn)
return 0;
}
static inline void gen_jmp_tb(long tb, int n, uint32_t dest)
{
if (n == 0)
gen_op_goto_tb0(TBPARAM(tb));
else
gen_op_goto_tb1(TBPARAM(tb));
gen_op_movl_T0_im(dest);
gen_op_movl_r15_T0();
gen_op_movl_T0_im(tb + n);
gen_op_exit_tb();
}
static inline void gen_jmp (DisasContext *s, uint32_t dest)
{
if (__builtin_expect(s->singlestep_enabled, 0)) {
@ -906,7 +924,8 @@ static inline void gen_jmp (DisasContext *s, uint32_t dest)
gen_op_movl_T0_im(dest);
gen_bx(s);
} else {
gen_op_jmp0((long)s->tb, dest);
long tb = (long)s->tb;
gen_jmp_tb(tb, 0, dest);
s->is_jmp = DISAS_TB_JUMP;
}
}
@ -2118,7 +2137,7 @@ static inline int gen_intermediate_code_internal(CPUState *env,
} else {
switch(dc->is_jmp) {
case DISAS_NEXT:
gen_op_jmp1((long)dc->tb, (long)dc->pc);
gen_jmp_tb((long)dc->tb, 1, dc->pc);
break;
default:
case DISAS_JUMP:
@ -2133,7 +2152,7 @@ static inline int gen_intermediate_code_internal(CPUState *env,
}
if (dc->condjmp) {
gen_set_label(dc->condlabel);
gen_op_jmp1((long)dc->tb, (long)dc->pc);
gen_jmp_tb((long)dc->tb, 1, dc->pc);
dc->condjmp = 0;
}
}

38
target-mips/op.c
View File

@ -487,7 +487,16 @@ OP_COND(ltz, (int32_t)T0 < 0);
/* Branchs */
//#undef USE_DIRECT_JUMP
#define EIP env->PC
void OPPROTO op_goto_tb0(void)
{
GOTO_TB(op_goto_tb0, PARAM1, 0);
}
void OPPROTO op_goto_tb1(void)
{
GOTO_TB(op_goto_tb1, PARAM1, 1);
}
/* Branch to register */
void op_save_breg_target (void)
@ -506,13 +515,6 @@ void op_breg (void)
RETURN();
}
/* Unconditional branch */
void op_branch (void)
{
JUMP_TB(branch, PARAM1, 0, PARAM2);
RETURN();
}
void op_save_btarget (void)
{
env->btarget = PARAM1;
@ -538,24 +540,10 @@ void op_restore_bcond (void)
RETURN();
}
void op_bcond (void)
void op_jnz_T2 (void)
{
if (T2) {
JUMP_TB(bcond, PARAM1, 0, PARAM2);
} else {
JUMP_TB(bcond, PARAM1, 1, PARAM3);
}
RETURN();
}
/* Likely branch (used to skip the delay slot) */
void op_blikely (void)
{
/* If the test is false, skip the delay slot */
if (T2 == 0) {
env->hflags = PARAM3;
JUMP_TB(blikely, PARAM1, 1, PARAM2);
}
if (T2)
GOTO_LABEL_PARAM(1);
RETURN();
}

47
target-mips/translate.c
View File

@ -31,6 +31,12 @@
#define MIPS_DEBUG_DISAS
//#define MIPS_SINGLE_STEP
#ifdef USE_DIRECT_JUMP
#define TBPARAM(x)
#else
#define TBPARAM(x) (long)(x)
#endif
enum {
#define DEF(s, n, copy_size) INDEX_op_ ## s,
#include "opc.h"
@ -922,6 +928,17 @@ static void gen_trap (DisasContext *ctx, uint16_t opc,
ctx->bstate = BS_STOP;
}
static inline void gen_jmp_tb(long tb, int n, uint32_t dest)
{
if (n == 0)
gen_op_goto_tb0(TBPARAM(tb));
else
gen_op_goto_tb1(TBPARAM(tb));
gen_op_save_pc(dest);
gen_op_set_T0(tb + n);
gen_op_exit_tb();
}
/* Branches (before delay slot) */
static void gen_compute_branch (DisasContext *ctx, uint16_t opc,
int rs, int rt, int32_t offset)
@ -1018,7 +1035,7 @@ static void gen_compute_branch (DisasContext *ctx, uint16_t opc,
case OPC_BLTZL: /* 0 < 0 likely */
/* Skip the instruction in the delay slot */
MIPS_DEBUG("bnever and skip");
gen_op_branch((long)ctx->tb, ctx->pc + 4);
gen_jmp_tb((long)ctx->tb, 0, ctx->pc + 4);
return;
case OPC_J:
ctx->hflags |= MIPS_HFLAG_DS | MIPS_HFLAG_B;
@ -1255,6 +1272,15 @@ static void gen_arith64 (DisasContext *ctx, uint16_t opc)
#endif
static void gen_blikely(DisasContext *ctx)
{
int l1;
l1 = gen_new_label();
gen_op_jnz_T2(l1);
gen_op_save_state(ctx->hflags & ~(MIPS_HFLAG_BMASK | MIPS_HFLAG_DS));
gen_jmp_tb((long)ctx->tb, 1, ctx->pc + 4);
}
static void decode_opc (DisasContext *ctx)
{
int32_t offset;
@ -1266,8 +1292,7 @@ static void decode_opc (DisasContext *ctx)
(ctx->hflags & MIPS_HFLAG_BL)) {
/* Handle blikely not taken case */
MIPS_DEBUG("blikely condition (%08x)", ctx->pc + 4);
gen_op_blikely((long)ctx->tb, ctx->pc + 4,
ctx->hflags & ~(MIPS_HFLAG_BMASK | MIPS_HFLAG_DS));
gen_blikely(ctx);
}
op = ctx->opcode >> 26;
rs = ((ctx->opcode >> 21) & 0x1F);
@ -1477,17 +1502,24 @@ static void decode_opc (DisasContext *ctx)
case MIPS_HFLAG_B:
/* unconditional branch */
MIPS_DEBUG("unconditional branch");
gen_op_branch((long)ctx->tb, ctx->btarget);
gen_jmp_tb((long)ctx->tb, 0, ctx->btarget);
break;
case MIPS_HFLAG_BL:
/* blikely taken case */
MIPS_DEBUG("blikely branch taken");
gen_op_branch((long)ctx->tb, ctx->btarget);
gen_jmp_tb((long)ctx->tb, 0, ctx->btarget);
break;
case MIPS_HFLAG_BC:
/* Conditional branch */
MIPS_DEBUG("conditional branch");
gen_op_bcond((long)ctx->tb, ctx->btarget, ctx->pc + 4);
{
int l1;
l1 = gen_new_label();
gen_op_jnz_T2(l1);
gen_jmp_tb((long)ctx->tb, 0, ctx->btarget);
gen_set_label(l1);
gen_jmp_tb((long)ctx->tb, 1, ctx->pc + 4);
}
break;
case MIPS_HFLAG_BR:
/* unconditional branch to register */
@ -1513,6 +1545,7 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
gen_opc_ptr = gen_opc_buf;
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
gen_opparam_ptr = gen_opparam_buf;
nb_gen_labels = 0;
ctx.pc = pc_start;
ctx.tb = tb;
ctx.bstate = BS_NONE;
@ -1570,7 +1603,7 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
}
if (ctx.bstate != BS_BRANCH && ctx.bstate != BS_EXCP) {
save_cpu_state(ctxp, 0);
gen_op_branch((long)ctx.tb, ctx.pc);
gen_jmp_tb((long)ctx.tb, 0, ctx.pc);
}
gen_op_reset_T0();
/* Generate the return instruction */

18
target-ppc/op.c
View File

@ -451,9 +451,14 @@ PPC_OP(setlr)
regs->lr = PARAM1;
}
PPC_OP(b)
PPC_OP(goto_tb0)
{
JUMP_TB(b1, PARAM1, 0, PARAM2);
GOTO_TB(op_goto_tb0, PARAM1, 0);
}
PPC_OP(goto_tb1)
{
GOTO_TB(op_goto_tb1, PARAM1, 1);
}
PPC_OP(b_T1)
@ -461,13 +466,10 @@ PPC_OP(b_T1)
regs->nip = T1 & ~3;
}
PPC_OP(btest)
PPC_OP(jz_T0)
{
if (T0) {
JUMP_TB(btest, PARAM1, 0, PARAM2);
} else {
JUMP_TB(btest, PARAM1, 1, PARAM3);
}
if (!T0)
GOTO_LABEL_PARAM(1);
RETURN();
}

31
target-ppc/translate.c
View File

@ -30,6 +30,12 @@
//#define DO_SINGLE_STEP
//#define PPC_DEBUG_DISAS
#ifdef USE_DIRECT_JUMP
#define TBPARAM(x)
#else
#define TBPARAM(x) (long)(x)
#endif
enum {
#define DEF(s, n, copy_size) INDEX_op_ ## s,
#include "opc.h"
@ -1721,6 +1727,18 @@ GEN_HANDLER(stfiwx, 0x1F, 0x17, 0x1E, 0x00000001, PPC_FLOAT)
/*** Branch ***/
static inline void gen_jmp_tb(long tb, int n, uint32_t dest)
{
if (n == 0)
gen_op_goto_tb0(TBPARAM(tb));
else
gen_op_goto_tb1(TBPARAM(tb));
gen_op_set_T1(dest);
gen_op_b_T1();
gen_op_set_T0(tb + n);
gen_op_exit_tb();
}
/* b ba bl bla */
GEN_HANDLER(b, 0x12, 0xFF, 0xFF, 0x00000000, PPC_FLOW)
{
@ -1736,7 +1754,7 @@ GEN_HANDLER(b, 0x12, 0xFF, 0xFF, 0x00000000, PPC_FLOW)
if (LK(ctx->opcode)) {
gen_op_setlr(ctx->nip);
}
gen_op_b((long)ctx->tb, target);
gen_jmp_tb((long)ctx->tb, 0, target);
ctx->exception = EXCP_BRANCH;
}
@ -1787,7 +1805,7 @@ static inline void gen_bcond(DisasContext *ctx, int type)
case 4:
case 6:
if (type == BCOND_IM) {
gen_op_b((long)ctx->tb, target);
gen_jmp_tb((long)ctx->tb, 0, target);
} else {
gen_op_b_T1();
}
@ -1827,7 +1845,11 @@ static inline void gen_bcond(DisasContext *ctx, int type)
}
}
if (type == BCOND_IM) {
gen_op_btest((long)ctx->tb, target, ctx->nip);
int l1 = gen_new_label();
gen_op_jz_T0(l1);
gen_jmp_tb((long)ctx->tb, 0, target);
gen_set_label(l1);
gen_jmp_tb((long)ctx->tb, 1, ctx->nip);
} else {
gen_op_btest_T1(ctx->nip);
}
@ -2459,6 +2481,7 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
gen_opc_ptr = gen_opc_buf;
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
gen_opparam_ptr = gen_opparam_buf;
nb_gen_labels = 0;
ctx.nip = pc_start;
ctx.tb = tb;
ctx.exception = EXCP_NONE;
@ -2575,7 +2598,7 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
#endif
}
if (ctx.exception == EXCP_NONE) {
gen_op_b((unsigned long)ctx.tb, ctx.nip);
gen_jmp_tb((long)ctx.tb, 0, ctx.nip);
} else if (ctx.exception != EXCP_BRANCH) {
gen_op_set_T0(0);
}