Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20161101-2' i…

…nto staging

tcg queued patches

# gpg: Signature made Tue 01 Nov 2016 16:45:42 GMT
# gpg:                using RSA key 0xAD1270CC4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg:                 aka "Richard Henderson <rth@redhat.com>"
# gpg:                 aka "Richard Henderson <rth@twiddle.net>"
# Primary key fingerprint: 9CB1 8DDA F8E8 49AD 2AFC  16A4 AD12 70CC 4DD0 279B

* remotes/rth/tags/pull-tcg-20161101-2:
  tcg: correct 32-bit tcg_gen_ld8s_i64 sign-extension
  tcg/tcg.h: Improve documentation of TCGv_i32 etc types
  MAINTAINERS: Update PPC status and maintainer
  target-microblaze: Cleanup dec_mul
  tcg: Add tcg_gen_mulsu2_{i32,i64,tl}
  log: Add locking to large logging blocks
  target-openrisc: Do not dump cpu state with -d in_asm
  target-microblaze: Do not dump cpu state with -d in_asm
  target-cris: Do not dump cpu state with -d in_asm

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

MAINTAINERS

@@ -1504,8 +1504,8 @@ F: tcg/mips/
 F: disas/mips.c
 
 PPC
-M: Vassili Karpov (malc) <av1474@comtv.ru>
-S: Maintained
+M: Richard Henderson <rth@twiddle.net>
+S: Odd Fixes
 F: tcg/ppc/
 F: disas/ppc.c
 

cpu-exec.c

@@ -150,11 +150,13 @@ static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu, TranslationBlock *itb)
 #if defined(DEBUG_DISAS)
     if (qemu_loglevel_mask(CPU_LOG_TB_CPU)
         && qemu_log_in_addr_range(itb->pc)) {
+        qemu_log_lock();
 #if defined(TARGET_I386)
         log_cpu_state(cpu, CPU_DUMP_CCOP);
 #else
         log_cpu_state(cpu, 0);
 #endif
+        qemu_log_unlock();
     }
 #endif /* DEBUG_DISAS */
 

exec.c

@@ -911,11 +911,13 @@ void cpu_abort(CPUState *cpu, const char *fmt, ...)
     fprintf(stderr, "\n");
     cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU | CPU_DUMP_CCOP);
     if (qemu_log_separate()) {
+        qemu_log_lock();
         qemu_log("qemu: fatal: ");
         qemu_log_vprintf(fmt, ap2);
         qemu_log("\n");
         log_cpu_state(cpu, CPU_DUMP_FPU | CPU_DUMP_CCOP);
         qemu_log_flush();
+        qemu_log_unlock();
         qemu_log_close();
     }
     va_end(ap2);

include/qemu/log.h

@@ -51,6 +51,22 @@ static inline bool qemu_loglevel_mask(int mask)
     return (qemu_loglevel & mask) != 0;
 }
 
+/* Lock output for a series of related logs.  Since this is not needed
+ * for a single qemu_log / qemu_log_mask / qemu_log_mask_and_addr, we
+ * assume that qemu_loglevel_mask has already been tested, and that
+ * qemu_loglevel is never set when qemu_logfile is unset.
+ */
+
+static inline void qemu_log_lock(void)
+{
+    qemu_flockfile(qemu_logfile);
+}
+
+static inline void qemu_log_unlock(void)
+{
+    qemu_funlockfile(qemu_logfile);
+}
+
 /* Logging functions: */
 
 /* main logging function

include/sysemu/os-posix.h

@@ -87,4 +87,16 @@ void *qemu_alloc_stack(size_t *sz);
  */
 void qemu_free_stack(void *stack, size_t sz);
 
+/* POSIX and Mingw32 differ in the name of the stdio lock functions.  */
+
+static inline void qemu_flockfile(FILE *f)
+{
+    flockfile(f);
+}
+
+static inline void qemu_funlockfile(FILE *f)
+{
+    funlockfile(f);
+}
+
 #endif

include/sysemu/os-win32.h

@@ -103,6 +103,21 @@ static inline char *realpath(const char *path, char *resolved_path)
     return resolved_path;
 }
 
+/* ??? Mingw appears to export _lock_file and _unlock_file as the functions
+ * with which to lock a stdio handle.  But something is wrong in the markup,
+ * either in the header or the library, such that we get undefined references
+ * to "_imp___lock_file" etc when linking.  Since we seem to have no other
+ * alternative, and the usage within the logging functions isn't critical,
+ * ignore FILE locking.
+ */
+
+static inline void qemu_flockfile(FILE *f)
+{
+}
+
+static inline void qemu_funlockfile(FILE *f)
+{
+}
 
 /* We wrap all the sockets functions so that we can
  * set errno based on WSAGetLastError()

target-alpha/translate.c

@@ -2994,9 +2994,11 @@ void gen_intermediate_code(CPUAlphaState *env, struct TranslationBlock *tb)
 #ifdef DEBUG_DISAS
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
         && qemu_log_in_addr_range(pc_start)) {
+        qemu_log_lock();
         qemu_log("IN: %s\n", lookup_symbol(pc_start));
         log_target_disas(cs, pc_start, ctx.pc - pc_start, 1);
         qemu_log("\n");
+        qemu_log_unlock();
     }
 #endif
 }

target-arm/translate-a64.c

@@ -11420,11 +11420,13 @@ void gen_intermediate_code_a64(ARMCPU *cpu, TranslationBlock *tb)
 #ifdef DEBUG_DISAS
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) &&
         qemu_log_in_addr_range(pc_start)) {
+        qemu_log_lock();
         qemu_log("----------------\n");
         qemu_log("IN: %s\n", lookup_symbol(pc_start));
         log_target_disas(cs, pc_start, dc->pc - pc_start,
                          4 | (bswap_code(dc->sctlr_b) ? 2 : 0));
         qemu_log("\n");
+        qemu_log_unlock();
     }
 #endif
     tb->size = dc->pc - pc_start;

target-arm/translate.c

@@ -11963,11 +11963,13 @@ void gen_intermediate_code(CPUARMState *env, TranslationBlock *tb)
 #ifdef DEBUG_DISAS
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) &&
         qemu_log_in_addr_range(pc_start)) {
+        qemu_log_lock();
         qemu_log("----------------\n");
         qemu_log("IN: %s\n", lookup_symbol(pc_start));
         log_target_disas(cs, pc_start, dc->pc - pc_start,
                          dc->thumb | (dc->sctlr_b << 1));
         qemu_log("\n");
+        qemu_log_unlock();
     }
 #endif
     tb->size = dc->pc - pc_start;

target-cris/translate.c

@@ -3135,29 +3135,6 @@ void gen_intermediate_code(CPUCRISState *env, struct TranslationBlock *tb)
 
     dc->cpustate_changed = 0;
 
-    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
-        qemu_log(
-                "pc=%x %x flg=%" PRIx64 " bt=%x ds=%u ccs=%x\n"
-                "pid=%x usp=%x\n"
-                "%x.%x.%x.%x\n"
-                "%x.%x.%x.%x\n"
-                "%x.%x.%x.%x\n"
-                "%x.%x.%x.%x\n",
-                dc->pc, dc->ppc,
-                (uint64_t)tb->flags,
-                env->btarget, (unsigned)tb->flags & 7,
-                env->pregs[PR_CCS],
-                env->pregs[PR_PID], env->pregs[PR_USP],
-                env->regs[0], env->regs[1], env->regs[2], env->regs[3],
-                env->regs[4], env->regs[5], env->regs[6], env->regs[7],
-                env->regs[8], env->regs[9],
-                env->regs[10], env->regs[11],
-                env->regs[12], env->regs[13],
-                env->regs[14], env->regs[15]);
-        qemu_log("--------------\n");
-        qemu_log("IN: %s\n", lookup_symbol(pc_start));
-    }
-
     next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
     num_insns = 0;
     max_insns = tb->cflags & CF_COUNT_MASK;
@@ -3313,10 +3290,14 @@ void gen_intermediate_code(CPUCRISState *env, struct TranslationBlock *tb)
 #if !DISAS_CRIS
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
         && qemu_log_in_addr_range(pc_start)) {
+        qemu_log_lock();
+        qemu_log("--------------\n");
+        qemu_log("IN: %s\n", lookup_symbol(pc_start));
         log_target_disas(cs, pc_start, dc->pc - pc_start,
                          env->pregs[PR_VR]);
         qemu_log("\nisize=%d osize=%d\n",
                  dc->pc - pc_start, tcg_op_buf_count());
+        qemu_log_unlock();
     }
 #endif
 #endif

target-i386/translate.c

@@ -2432,11 +2432,13 @@ static void gen_unknown_opcode(CPUX86State *env, DisasContext *s)
 
     if (qemu_loglevel_mask(LOG_UNIMP)) {
         target_ulong pc = s->pc_start, end = s->pc;
+        qemu_log_lock();
         qemu_log("ILLOPC: " TARGET_FMT_lx ":", pc);
         for (; pc < end; ++pc) {
             qemu_log(" %02x", cpu_ldub_code(env, pc));
         }
         qemu_log("\n");
+        qemu_log_unlock();
     }
 }
 
@@ -8470,6 +8472,7 @@ void gen_intermediate_code(CPUX86State *env, TranslationBlock *tb)
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
         && qemu_log_in_addr_range(pc_start)) {
         int disas_flags;
+        qemu_log_lock();
         qemu_log("----------------\n");
         qemu_log("IN: %s\n", lookup_symbol(pc_start));
 #ifdef TARGET_X86_64
@@ -8480,6 +8483,7 @@ void gen_intermediate_code(CPUX86State *env, TranslationBlock *tb)
             disas_flags = !dc->code32;
         log_target_disas(cs, pc_start, pc_ptr - pc_start, disas_flags);
         qemu_log("\n");
+        qemu_log_unlock();
     }
 #endif
 

target-lm32/translate.c

@@ -1148,10 +1148,12 @@ void gen_intermediate_code(CPULM32State *env, struct TranslationBlock *tb)
 #ifdef DEBUG_DISAS
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
         && qemu_log_in_addr_range(pc_start)) {
+        qemu_log_lock();
         qemu_log("\n");
         log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
         qemu_log("\nisize=%d osize=%d\n",
                  dc->pc - pc_start, tcg_op_buf_count());
+        qemu_log_unlock();
     }
 #endif
 }

target-m68k/translate.c

@@ -3549,10 +3549,12 @@ void gen_intermediate_code(CPUM68KState *env, TranslationBlock *tb)
 #ifdef DEBUG_DISAS
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
         && qemu_log_in_addr_range(pc_start)) {
+        qemu_log_lock();
         qemu_log("----------------\n");
         qemu_log("IN: %s\n", lookup_symbol(pc_start));
         log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
         qemu_log("\n");
+        qemu_log_unlock();
     }
 #endif
     tb->size = dc->pc - pc_start;

target-microblaze/translate.c

@@ -581,50 +581,10 @@ static void dec_msr(DisasContext *dc)
     }
 }
 
-/* 64-bit signed mul, lower result in d and upper in d2.  */
-static void t_gen_muls(TCGv d, TCGv d2, TCGv a, TCGv b)
-{
-    TCGv_i64 t0, t1;
-
-    t0 = tcg_temp_new_i64();
-    t1 = tcg_temp_new_i64();
-
-    tcg_gen_ext_i32_i64(t0, a);
-    tcg_gen_ext_i32_i64(t1, b);
-    tcg_gen_mul_i64(t0, t0, t1);
-
-    tcg_gen_extrl_i64_i32(d, t0);
-    tcg_gen_shri_i64(t0, t0, 32);
-    tcg_gen_extrl_i64_i32(d2, t0);
-
-    tcg_temp_free_i64(t0);
-    tcg_temp_free_i64(t1);
-}
-
-/* 64-bit unsigned muls, lower result in d and upper in d2.  */
-static void t_gen_mulu(TCGv d, TCGv d2, TCGv a, TCGv b)
-{
-    TCGv_i64 t0, t1;
-
-    t0 = tcg_temp_new_i64();
-    t1 = tcg_temp_new_i64();
-
-    tcg_gen_extu_i32_i64(t0, a);
-    tcg_gen_extu_i32_i64(t1, b);
-    tcg_gen_mul_i64(t0, t0, t1);
-
-    tcg_gen_extrl_i64_i32(d, t0);
-    tcg_gen_shri_i64(t0, t0, 32);
-    tcg_gen_extrl_i64_i32(d2, t0);
-
-    tcg_temp_free_i64(t0);
-    tcg_temp_free_i64(t1);
-}
-
 /* Multiplier unit.  */
 static void dec_mul(DisasContext *dc)
 {
-    TCGv d[2];
+    TCGv tmp;
     unsigned int subcode;
 
     if ((dc->tb_flags & MSR_EE_FLAG)
@@ -636,13 +596,11 @@ static void dec_mul(DisasContext *dc)
     }
 
     subcode = dc->imm & 3;
-    d[0] = tcg_temp_new();
-    d[1] = tcg_temp_new();
 
     if (dc->type_b) {
         LOG_DIS("muli r%d r%d %x\n", dc->rd, dc->ra, dc->imm);
-        t_gen_mulu(cpu_R[dc->rd], d[1], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
-        goto done;
+        tcg_gen_mul_tl(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
+        return;
     }
 
     /* mulh, mulhsu and mulhu are not available if C_USE_HW_MUL is < 2.  */
@@ -651,30 +609,29 @@ static void dec_mul(DisasContext *dc)
         /* nop??? */
     }
 
+    tmp = tcg_temp_new();
     switch (subcode) {
         case 0:
             LOG_DIS("mul r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
-            t_gen_mulu(cpu_R[dc->rd], d[1], cpu_R[dc->ra], cpu_R[dc->rb]);
+            tcg_gen_mul_tl(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
             break;
         case 1:
             LOG_DIS("mulh r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
-            t_gen_muls(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+            tcg_gen_muls2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
             break;
         case 2:
             LOG_DIS("mulhsu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
-            t_gen_muls(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+            tcg_gen_mulsu2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
             break;
         case 3:
             LOG_DIS("mulhu r%d r%d r%d\n", dc->rd, dc->ra, dc->rb);
-            t_gen_mulu(d[0], cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
+            tcg_gen_mulu2_tl(tmp, cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
             break;
         default:
             cpu_abort(CPU(dc->cpu), "unknown MUL insn %x\n", subcode);
             break;
     }
-done:
-    tcg_temp_free(d[0]);
-    tcg_temp_free(d[1]);
+    tcg_temp_free(tmp);
 }
 
 /* Div unit.  */
@@ -1670,13 +1627,6 @@ void gen_intermediate_code(CPUMBState *env, struct TranslationBlock *tb)
         cpu_abort(cs, "Microblaze: unaligned PC=%x\n", pc_start);
     }
 
-    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
-#if !SIM_COMPAT
-        qemu_log("--------------\n");
-        log_cpu_state(CPU(cpu), 0);
-#endif
-    }
-
     next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
     num_insns = 0;
     max_insns = tb->cflags & CF_COUNT_MASK;
@@ -1820,12 +1770,14 @@ void gen_intermediate_code(CPUMBState *env, struct TranslationBlock *tb)
 #if !SIM_COMPAT
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
         && qemu_log_in_addr_range(pc_start)) {
-        qemu_log("\n");
+        qemu_log_lock();
+        qemu_log("--------------\n");
 #if DISAS_GNU
         log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
 #endif
         qemu_log("\nisize=%d osize=%d\n",
                  dc->pc - pc_start, tcg_op_buf_count());
+        qemu_log_unlock();
     }
 #endif
 #endif

target-mips/translate.c

@@ -20043,9 +20043,11 @@ void gen_intermediate_code(CPUMIPSState *env, struct TranslationBlock *tb)
     LOG_DISAS("\n");
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)
         && qemu_log_in_addr_range(pc_start)) {
+        qemu_log_lock();
         qemu_log("IN: %s\n", lookup_symbol(pc_start));
         log_target_disas(cs, pc_start, ctx.pc - pc_start, 0);
         qemu_log("\n");
+        qemu_log_unlock();
     }
 #endif
 }