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authorPeter Maydell <peter.maydell@linaro.org>2015-10-08 15:33:56 +0100
committerPeter Maydell <peter.maydell@linaro.org>2015-10-08 15:33:56 +0100
commit31c9bd164ddb653915b9029ba0edd40cd57530d9 (patch)
treea89ce755264cd0d9f97dcf4c8aae5df524034fd3 /target-s390x/translate.c
parentca4e4b82848982311a40d0937c1de9db1108fdb0 (diff)
parent126d89e8cdfa3be15d51f76906eaccbcd0023f98 (diff)
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Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20151007' into staging
Do away with TB retranslation # gpg: Signature made Wed 07 Oct 2015 10:42:08 BST using RSA key ID 4DD0279B # gpg: Good signature from "Richard Henderson <rth7680@gmail.com>" # gpg: aka "Richard Henderson <rth@redhat.com>" # gpg: aka "Richard Henderson <rth@twiddle.net>" * remotes/rth/tags/pull-tcg-20151007: (26 commits) tcg: Adjust CODE_GEN_AVG_BLOCK_SIZE tcg: Check for overflow via highwater mark tcg: Allocate a guard page after code_gen_buffer tcg: Emit prologue to the beginning of code_gen_buffer tcg: Remove tcg_gen_code_search_pc tcg: Remove gen_intermediate_code_pc tcg: Save insn data and use it in cpu_restore_state_from_tb tcg: Pass data argument to restore_state_to_opc tcg: Add TCG_MAX_INSNS target-*: Drop cpu_gen_code define tcg: Merge cpu_gen_code into tb_gen_code target-sparc: Add npc state to insn_start target-sparc: Remove gen_opc_jump_pc target-sparc: Split out gen_branch_n target-sparc: Tidy gen_branch_a interface target-cris: Mirror gen_opc_pc into insn_start target-sh4: Add flags state to insn_start target-s390x: Add cc_op state to insn_start target-mips: Add delayed branch state to insn_start target-i386: Add cc_op state to insn_start ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-s390x/translate.c')
-rw-r--r--target-s390x/translate.c78
1 files changed, 20 insertions, 58 deletions
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index 1151515..05d51fe 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -161,8 +161,6 @@ static char cpu_reg_names[32][4];
static TCGv_i64 regs[16];
static TCGv_i64 fregs[16];
-static uint8_t gen_opc_cc_op[OPC_BUF_SIZE];
-
void s390x_translate_init(void)
{
int i;
@@ -5319,18 +5317,14 @@ static ExitStatus translate_one(CPUS390XState *env, DisasContext *s)
return ret;
}
-static inline void gen_intermediate_code_internal(S390CPU *cpu,
- TranslationBlock *tb,
- bool search_pc)
+void gen_intermediate_code(CPUS390XState *env, struct TranslationBlock *tb)
{
+ S390CPU *cpu = s390_env_get_cpu(env);
CPUState *cs = CPU(cpu);
- CPUS390XState *env = &cpu->env;
DisasContext dc;
target_ulong pc_start;
uint64_t next_page_start;
- int j, lj = -1;
int num_insns, max_insns;
- CPUBreakpoint *bp;
ExitStatus status;
bool do_debug;
@@ -5353,41 +5347,27 @@ static inline void gen_intermediate_code_internal(S390CPU *cpu,
if (max_insns == 0) {
max_insns = CF_COUNT_MASK;
}
+ if (max_insns > TCG_MAX_INSNS) {
+ max_insns = TCG_MAX_INSNS;
+ }
gen_tb_start(tb);
do {
- if (search_pc) {
- j = tcg_op_buf_count();
- if (lj < j) {
- lj++;
- while (lj < j) {
- tcg_ctx.gen_opc_instr_start[lj++] = 0;
- }
- }
- tcg_ctx.gen_opc_pc[lj] = dc.pc;
- gen_opc_cc_op[lj] = dc.cc_op;
- tcg_ctx.gen_opc_instr_start[lj] = 1;
- tcg_ctx.gen_opc_icount[lj] = num_insns;
- }
- if (++num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
- gen_io_start();
+ tcg_gen_insn_start(dc.pc, dc.cc_op);
+ num_insns++;
+
+ if (unlikely(cpu_breakpoint_test(cs, dc.pc, BP_ANY))) {
+ status = EXIT_PC_STALE;
+ do_debug = true;
+ break;
}
- if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
- tcg_gen_debug_insn_start(dc.pc);
+ if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
+ gen_io_start();
}
status = NO_EXIT;
- if (unlikely(!QTAILQ_EMPTY(&cs->breakpoints))) {
- QTAILQ_FOREACH(bp, &cs->breakpoints, entry) {
- if (bp->pc == dc.pc) {
- status = EXIT_PC_STALE;
- do_debug = true;
- break;
- }
- }
- }
if (status == NO_EXIT) {
status = translate_one(env, &dc);
}
@@ -5432,16 +5412,8 @@ static inline void gen_intermediate_code_internal(S390CPU *cpu,
gen_tb_end(tb, num_insns);
- if (search_pc) {
- j = tcg_op_buf_count();
- lj++;
- while (lj <= j) {
- tcg_ctx.gen_opc_instr_start[lj++] = 0;
- }
- } else {
- tb->size = dc.pc - pc_start;
- tb->icount = num_insns;
- }
+ tb->size = dc.pc - pc_start;
+ tb->icount = num_insns;
#if defined(S390X_DEBUG_DISAS)
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
@@ -5452,21 +5424,11 @@ static inline void gen_intermediate_code_internal(S390CPU *cpu,
#endif
}
-void gen_intermediate_code (CPUS390XState *env, struct TranslationBlock *tb)
-{
- gen_intermediate_code_internal(s390_env_get_cpu(env), tb, false);
-}
-
-void gen_intermediate_code_pc (CPUS390XState *env, struct TranslationBlock *tb)
-{
- gen_intermediate_code_internal(s390_env_get_cpu(env), tb, true);
-}
-
-void restore_state_to_opc(CPUS390XState *env, TranslationBlock *tb, int pc_pos)
+void restore_state_to_opc(CPUS390XState *env, TranslationBlock *tb,
+ target_ulong *data)
{
- int cc_op;
- env->psw.addr = tcg_ctx.gen_opc_pc[pc_pos];
- cc_op = gen_opc_cc_op[pc_pos];
+ int cc_op = data[1];
+ env->psw.addr = data[0];
if ((cc_op != CC_OP_DYNAMIC) && (cc_op != CC_OP_STATIC)) {
env->cc_op = cc_op;
}