target/microblaze: Split out FSR from env->sregs

Continue eliminating the sregs array in favor of individual members.
Does not correct the width of FSR, yet.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/linux-user/microblaze/cpu_loop.c b/linux-user/microblaze/cpu_loop.c
index c10e3e0261f8a92b94323bf6af70f98e94d14d6b..da5e98b7842520a4329d4c7607b4dc0e3013374f 100644 (file)
--- a/linux-user/microblaze/cpu_loop.c
+++ b/linux-user/microblaze/cpu_loop.c
@@ -96,10 +96,10 @@ void cpu_loop(CPUMBState *env)
                 case ESR_EC_FPU:
                     info.si_signo = TARGET_SIGFPE;
                     info.si_errno = 0;
-                    if (env->sregs[SR_FSR] & FSR_IO) {
+                    if (env->fsr & FSR_IO) {
                         info.si_code = TARGET_FPE_FLTINV;
                     }
-                    if (env->sregs[SR_FSR] & FSR_DZ) {
+                    if (env->fsr & FSR_DZ) {
                         info.si_code = TARGET_FPE_FLTDIV;
                     }
                     info._sifields._sigfault._addr = 0;

diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h
index 7d94af43ed14b2df8f80985cb6a9d6f609c9bdf2..bcafef99b057e5f9156c24b9f845503425c4ff80 100644 (file)
--- a/target/microblaze/cpu.h
+++ b/target/microblaze/cpu.h
@@ -240,6 +240,7 @@ struct CPUMBState {
     uint64_t msr;
     uint64_t ear;
     uint64_t esr;
+    uint64_t fsr;
     uint64_t sregs[14];
     float_status fp_status;
     /* Stack protectors. Yes, it's a hw feature.  */

diff --git a/target/microblaze/gdbstub.c b/target/microblaze/gdbstub.c
index 05e22f233d9dde46fa9316fe6c3b19aff835653e..2634ce49fc35e184433c953bcf72349cf4b09373 100644 (file)
--- a/target/microblaze/gdbstub.c
+++ b/target/microblaze/gdbstub.c
@@ -71,7 +71,7 @@ int mb_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
         val = env->esr;
         break;
     case GDB_FSR:
-        val = env->sregs[SR_FSR];
+        val = env->fsr;
         break;
     case GDB_BTR:
         val = env->sregs[SR_BTR];
@@ -127,7 +127,7 @@ int mb_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
         env->esr = tmp;
         break;
     case GDB_FSR:
-        env->sregs[SR_FSR] = tmp;
+        env->fsr = tmp;
         break;
     case GDB_BTR:
         env->sregs[SR_BTR] = tmp;

diff --git a/target/microblaze/op_helper.c b/target/microblaze/op_helper.c
index f01cf9be64c84b70cb6fa2e4d2f384eb91e6ee7e..ae57d45536361e8a1092b9eacecdc5615a2d460f 100644 (file)
--- a/target/microblaze/op_helper.c
+++ b/target/microblaze/op_helper.c
@@ -175,19 +175,19 @@ static void update_fpu_flags(CPUMBState *env, int flags)
     int raise = 0;
 
     if (flags & float_flag_invalid) {
-        env->sregs[SR_FSR] |= FSR_IO;
+        env->fsr |= FSR_IO;
         raise = 1;
     }
     if (flags & float_flag_divbyzero) {
-        env->sregs[SR_FSR] |= FSR_DZ;
+        env->fsr |= FSR_DZ;
         raise = 1;
     }
     if (flags & float_flag_overflow) {
-        env->sregs[SR_FSR] |= FSR_OF;
+        env->fsr |= FSR_OF;
         raise = 1;
     }
     if (flags & float_flag_underflow) {
-        env->sregs[SR_FSR] |= FSR_UF;
+        env->fsr |= FSR_UF;
         raise = 1;
     }
     if (raise

diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index 411c7b6e4985c36e9e7594f973cc4cf727bb99d7..c58c49ea8f255208c1b8d294a215ea800741be89 100644 (file)
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -1810,7 +1810,7 @@ void mb_cpu_dump_state(CPUState *cs, FILE *f, int flags)
                  "debug=%x imm=%x iflags=%x fsr=%" PRIx64 " "
                  "rbtr=%" PRIx64 "\n",
                  env->msr, env->esr, env->ear,
-                 env->debug, env->imm, env->iflags, env->sregs[SR_FSR],
+                 env->debug, env->imm, env->iflags, env->fsr,
                  env->sregs[SR_BTR]);
     qemu_fprintf(f, "btaken=%d btarget=%" PRIx64 " mode=%s(saved=%s) "
                  "eip=%d ie=%d\n",
@@ -1877,8 +1877,10 @@ void mb_tcg_init(void)
         tcg_global_mem_new_i64(cpu_env, offsetof(CPUMBState, ear), "rear");
     cpu_SR[SR_ESR] =
         tcg_global_mem_new_i64(cpu_env, offsetof(CPUMBState, esr), "resr");
+    cpu_SR[SR_FSR] =
+        tcg_global_mem_new_i64(cpu_env, offsetof(CPUMBState, fsr), "rfsr");
 
-    for (i = SR_ESR + 1; i < ARRAY_SIZE(cpu_SR); i++) {
+    for (i = SR_FSR + 1; i < ARRAY_SIZE(cpu_SR); i++) {
         cpu_SR[i] = tcg_global_mem_new_i64(cpu_env,
                           offsetof(CPUMBState, sregs[i]),
                           special_regnames[i]);