Re: [Qemu-devel] [PATCH 17/21] target-microblaze: switch to AREG0 free mode

[Aurelien Jarno <aurelien@aurel32.net>]

On Sun, Sep 02, 2012 at 05:33:46PM +0000, Blue Swirl wrote:
> Add an explicit CPUState parameter instead of relying on AREG0
> and switch to AREG0 free mode.
> 
> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
> ---
>  configure                       |    2 +-
>  target-microblaze/Makefile.objs |    2 -
>  target-microblaze/helper.h      |   48 ++++++++--------
>  target-microblaze/op_helper.c   |  115 ++++++++++++++++++---------------------
>  target-microblaze/translate.c   |   56 +++++++++++---------
>  5 files changed, 108 insertions(+), 115 deletions(-)
> 
> diff --git a/configure b/configure
> index efb5014..e464d2f 100755
> --- a/configure
> +++ b/configure
> @@ -3829,7 +3829,7 @@ symlink "$source_path/Makefile.target" "$target_dir/Makefile"
>  
>  
>  case "$target_arch2" in
> -  alpha | arm* | i386 | lm32 | m68k | or32 | s390x | sparc* | unicore32 | x86_64 | xtensa* | ppc*)
> +  alpha | arm* | i386 | lm32 | m68k | microblaze* | or32 | s390x | sparc* | unicore32 | x86_64 | xtensa* | ppc*)
>      echo "CONFIG_TCG_PASS_AREG0=y" >> $config_target_mak
>    ;;
>  esac
> diff --git a/target-microblaze/Makefile.objs b/target-microblaze/Makefile.objs
> index 4b09e8c..afb87bc 100644
> --- a/target-microblaze/Makefile.objs
> +++ b/target-microblaze/Makefile.objs
> @@ -1,4 +1,2 @@
>  obj-y += translate.o op_helper.o helper.o cpu.o
>  obj-$(CONFIG_SOFTMMU) += mmu.o machine.o
> -
> -$(obj)/op_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
> diff --git a/target-microblaze/helper.h b/target-microblaze/helper.h
> index 9dcfb0f..a1a732c 100644
> --- a/target-microblaze/helper.h
> +++ b/target-microblaze/helper.h
> @@ -1,39 +1,39 @@
>  #include "def-helper.h"
>  
> -DEF_HELPER_1(raise_exception, void, i32)
> -DEF_HELPER_0(debug, void)
> +DEF_HELPER_2(raise_exception, void, env, i32)
> +DEF_HELPER_1(debug, void, env)
>  DEF_HELPER_FLAGS_3(carry, TCG_CALL_PURE | TCG_CALL_CONST, i32, i32, i32, i32)
>  DEF_HELPER_2(cmp, i32, i32, i32)
>  DEF_HELPER_2(cmpu, i32, i32, i32)
>  DEF_HELPER_FLAGS_1(clz, TCG_CALL_PURE | TCG_CALL_CONST, i32, i32)
>  
> -DEF_HELPER_2(divs, i32, i32, i32)
> -DEF_HELPER_2(divu, i32, i32, i32)
> -
> -DEF_HELPER_2(fadd, i32, i32, i32)
> -DEF_HELPER_2(frsub, i32, i32, i32)
> -DEF_HELPER_2(fmul, i32, i32, i32)
> -DEF_HELPER_2(fdiv, i32, i32, i32)
> -DEF_HELPER_1(flt, i32, i32)
> -DEF_HELPER_1(fint, i32, i32)
> -DEF_HELPER_1(fsqrt, i32, i32)
> -
> -DEF_HELPER_2(fcmp_un, i32, i32, i32)
> -DEF_HELPER_2(fcmp_lt, i32, i32, i32)
> -DEF_HELPER_2(fcmp_eq, i32, i32, i32)
> -DEF_HELPER_2(fcmp_le, i32, i32, i32)
> -DEF_HELPER_2(fcmp_gt, i32, i32, i32)
> -DEF_HELPER_2(fcmp_ne, i32, i32, i32)
> -DEF_HELPER_2(fcmp_ge, i32, i32, i32)
> +DEF_HELPER_3(divs, i32, env, i32, i32)
> +DEF_HELPER_3(divu, i32, env, i32, i32)
> +
> +DEF_HELPER_3(fadd, i32, env, i32, i32)
> +DEF_HELPER_3(frsub, i32, env, i32, i32)
> +DEF_HELPER_3(fmul, i32, env, i32, i32)
> +DEF_HELPER_3(fdiv, i32, env, i32, i32)
> +DEF_HELPER_2(flt, i32, env, i32)
> +DEF_HELPER_2(fint, i32, env, i32)
> +DEF_HELPER_2(fsqrt, i32, env, i32)
> +
> +DEF_HELPER_3(fcmp_un, i32, env, i32, i32)
> +DEF_HELPER_3(fcmp_lt, i32, env, i32, i32)
> +DEF_HELPER_3(fcmp_eq, i32, env, i32, i32)
> +DEF_HELPER_3(fcmp_le, i32, env, i32, i32)
> +DEF_HELPER_3(fcmp_gt, i32, env, i32, i32)
> +DEF_HELPER_3(fcmp_ne, i32, env, i32, i32)
> +DEF_HELPER_3(fcmp_ge, i32, env, i32, i32)
>  
>  DEF_HELPER_FLAGS_2(pcmpbf, TCG_CALL_PURE | TCG_CALL_CONST, i32, i32, i32)
>  #if !defined(CONFIG_USER_ONLY)
> -DEF_HELPER_1(mmu_read, i32, i32)
> -DEF_HELPER_2(mmu_write, void, i32, i32)
> +DEF_HELPER_2(mmu_read, i32, env, i32)
> +DEF_HELPER_3(mmu_write, void, env, i32, i32)
>  #endif
>  
> -DEF_HELPER_4(memalign, void, i32, i32, i32, i32)
> -DEF_HELPER_1(stackprot, void, i32)
> +DEF_HELPER_5(memalign, void, env, i32, i32, i32, i32)
> +DEF_HELPER_2(stackprot, void, env, i32)
>  
>  DEF_HELPER_2(get, i32, i32, i32)
>  DEF_HELPER_3(put, void, i32, i32, i32)
> diff --git a/target-microblaze/op_helper.c b/target-microblaze/op_helper.c
> index 3b1f072..c9789f4 100644
> --- a/target-microblaze/op_helper.c
> +++ b/target-microblaze/op_helper.c
> @@ -20,7 +20,6 @@
>  
>  #include <assert.h>
>  #include "cpu.h"
> -#include "dyngen-exec.h"
>  #include "helper.h"
>  #include "host-utils.h"
>  
> @@ -42,17 +41,12 @@
>  /* Try to fill the TLB and return an exception if error. If retaddr is
>     NULL, it means that the function was called in C code (i.e. not
>     from generated code or from helper.c) */
> -/* XXX: fix it to restore all registers */
> -void tlb_fill(CPUMBState *env1, target_ulong addr, int is_write, int mmu_idx,
> +void tlb_fill(CPUMBState *env, target_ulong addr, int is_write, int mmu_idx,
>                uintptr_t retaddr)
>  {
>      TranslationBlock *tb;
> -    CPUMBState *saved_env;
>      int ret;
>  
> -    saved_env = env;
> -    env = env1;
> -
>      ret = cpu_mb_handle_mmu_fault(env, addr, is_write, mmu_idx);
>      if (unlikely(ret)) {
>          if (retaddr) {
> @@ -66,7 +60,6 @@ void tlb_fill(CPUMBState *env1, target_ulong addr, int is_write, int mmu_idx,
>          }
>          cpu_loop_exit(env);
>      }
> -    env = saved_env;
>  }
>  #endif
>  
> @@ -105,13 +98,13 @@ uint32_t helper_get(uint32_t id, uint32_t ctrl)
>      return 0xdead0000 | id;
>  }
>  
> -void helper_raise_exception(uint32_t index)
> +void helper_raise_exception(CPUMBState *env, uint32_t index)
>  {
>      env->exception_index = index;
>      cpu_loop_exit(env);
>  }
>  
> -void helper_debug(void)
> +void helper_debug(CPUMBState *env)
>  {
>      int i;
>  
> @@ -176,7 +169,7 @@ uint32_t helper_carry(uint32_t a, uint32_t b, uint32_t cf)
>      return ncf;
>  }
>  
> -static inline int div_prepare(uint32_t a, uint32_t b)
> +static inline int div_prepare(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      if (b == 0) {
>          env->sregs[SR_MSR] |= MSR_DZ;
> @@ -184,7 +177,7 @@ static inline int div_prepare(uint32_t a, uint32_t b)
>          if ((env->sregs[SR_MSR] & MSR_EE)
>              && !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) {
>              env->sregs[SR_ESR] = ESR_EC_DIVZERO;
> -            helper_raise_exception(EXCP_HW_EXCP);
> +            helper_raise_exception(env, EXCP_HW_EXCP);
>          }
>          return 0;
>      }
> @@ -192,28 +185,30 @@ static inline int div_prepare(uint32_t a, uint32_t b)
>      return 1;
>  }
>  
> -uint32_t helper_divs(uint32_t a, uint32_t b)
> +uint32_t helper_divs(CPUMBState *env, uint32_t a, uint32_t b)
>  {
> -    if (!div_prepare(a, b))
> +    if (!div_prepare(env, a, b)) {
>          return 0;
> +    }
>      return (int32_t)a / (int32_t)b;
>  }
>  
> -uint32_t helper_divu(uint32_t a, uint32_t b)
> +uint32_t helper_divu(CPUMBState *env, uint32_t a, uint32_t b)
>  {
> -    if (!div_prepare(a, b))
> +    if (!div_prepare(env, a, b)) {
>          return 0;
> +    }
>      return a / b;
>  }
>  
>  /* raise FPU exception.  */
> -static void raise_fpu_exception(void)
> +static void raise_fpu_exception(CPUMBState *env)
>  {
>      env->sregs[SR_ESR] = ESR_EC_FPU;
> -    helper_raise_exception(EXCP_HW_EXCP);
> +    helper_raise_exception(env, EXCP_HW_EXCP);
>  }
>  
> -static void update_fpu_flags(int flags)
> +static void update_fpu_flags(CPUMBState *env, int flags)
>  {
>      int raise = 0;
>  
> @@ -236,11 +231,11 @@ static void update_fpu_flags(int flags)
>      if (raise
>          && (env->pvr.regs[2] & PVR2_FPU_EXC_MASK)
>          && (env->sregs[SR_MSR] & MSR_EE)) {
> -        raise_fpu_exception();
> +        raise_fpu_exception(env);
>      }
>  }
>  
> -uint32_t helper_fadd(uint32_t a, uint32_t b)
> +uint32_t helper_fadd(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fd, fa, fb;
>      int flags;
> @@ -251,11 +246,11 @@ uint32_t helper_fadd(uint32_t a, uint32_t b)
>      fd.f = float32_add(fa.f, fb.f, &env->fp_status);
>  
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags);
> +    update_fpu_flags(env, flags);
>      return fd.l;
>  }
>  
> -uint32_t helper_frsub(uint32_t a, uint32_t b)
> +uint32_t helper_frsub(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fd, fa, fb;
>      int flags;
> @@ -265,11 +260,11 @@ uint32_t helper_frsub(uint32_t a, uint32_t b)
>      fb.l = b;
>      fd.f = float32_sub(fb.f, fa.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags);
> +    update_fpu_flags(env, flags);
>      return fd.l;
>  }
>  
> -uint32_t helper_fmul(uint32_t a, uint32_t b)
> +uint32_t helper_fmul(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fd, fa, fb;
>      int flags;
> @@ -279,12 +274,12 @@ uint32_t helper_fmul(uint32_t a, uint32_t b)
>      fb.l = b;
>      fd.f = float32_mul(fa.f, fb.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags);
> +    update_fpu_flags(env, flags);
>  
>      return fd.l;
>  }
>  
> -uint32_t helper_fdiv(uint32_t a, uint32_t b)
> +uint32_t helper_fdiv(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fd, fa, fb;
>      int flags;
> @@ -294,12 +289,12 @@ uint32_t helper_fdiv(uint32_t a, uint32_t b)
>      fb.l = b;
>      fd.f = float32_div(fb.f, fa.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags);
> +    update_fpu_flags(env, flags);
>  
>      return fd.l;
>  }
>  
> -uint32_t helper_fcmp_un(uint32_t a, uint32_t b)
> +uint32_t helper_fcmp_un(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fa, fb;
>      uint32_t r = 0;
> @@ -308,7 +303,7 @@ uint32_t helper_fcmp_un(uint32_t a, uint32_t b)
>      fb.l = b;
>  
>      if (float32_is_signaling_nan(fa.f) || float32_is_signaling_nan(fb.f)) {
> -        update_fpu_flags(float_flag_invalid);
> +        update_fpu_flags(env, float_flag_invalid);
>          r = 1;
>      }
>  
> @@ -319,7 +314,7 @@ uint32_t helper_fcmp_un(uint32_t a, uint32_t b)
>      return r;
>  }
>  
> -uint32_t helper_fcmp_lt(uint32_t a, uint32_t b)
> +uint32_t helper_fcmp_lt(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fa, fb;
>      int r;
> @@ -330,12 +325,12 @@ uint32_t helper_fcmp_lt(uint32_t a, uint32_t b)
>      fb.l = b;
>      r = float32_lt(fb.f, fa.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags & float_flag_invalid);
> +    update_fpu_flags(env, flags & float_flag_invalid);
>  
>      return r;
>  }
>  
> -uint32_t helper_fcmp_eq(uint32_t a, uint32_t b)
> +uint32_t helper_fcmp_eq(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fa, fb;
>      int flags;
> @@ -346,12 +341,12 @@ uint32_t helper_fcmp_eq(uint32_t a, uint32_t b)
>      fb.l = b;
>      r = float32_eq_quiet(fa.f, fb.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags & float_flag_invalid);
> +    update_fpu_flags(env, flags & float_flag_invalid);
>  
>      return r;
>  }
>  
> -uint32_t helper_fcmp_le(uint32_t a, uint32_t b)
> +uint32_t helper_fcmp_le(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fa, fb;
>      int flags;
> @@ -362,13 +357,13 @@ uint32_t helper_fcmp_le(uint32_t a, uint32_t b)
>      set_float_exception_flags(0, &env->fp_status);
>      r = float32_le(fa.f, fb.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags & float_flag_invalid);
> +    update_fpu_flags(env, flags & float_flag_invalid);
>  
>  
>      return r;
>  }
>  
> -uint32_t helper_fcmp_gt(uint32_t a, uint32_t b)
> +uint32_t helper_fcmp_gt(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fa, fb;
>      int flags, r;
> @@ -378,11 +373,11 @@ uint32_t helper_fcmp_gt(uint32_t a, uint32_t b)
>      set_float_exception_flags(0, &env->fp_status);
>      r = float32_lt(fa.f, fb.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags & float_flag_invalid);
> +    update_fpu_flags(env, flags & float_flag_invalid);
>      return r;
>  }
>  
> -uint32_t helper_fcmp_ne(uint32_t a, uint32_t b)
> +uint32_t helper_fcmp_ne(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fa, fb;
>      int flags, r;
> @@ -392,12 +387,12 @@ uint32_t helper_fcmp_ne(uint32_t a, uint32_t b)
>      set_float_exception_flags(0, &env->fp_status);
>      r = !float32_eq_quiet(fa.f, fb.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags & float_flag_invalid);
> +    update_fpu_flags(env, flags & float_flag_invalid);
>  
>      return r;
>  }
>  
> -uint32_t helper_fcmp_ge(uint32_t a, uint32_t b)
> +uint32_t helper_fcmp_ge(CPUMBState *env, uint32_t a, uint32_t b)
>  {
>      CPU_FloatU fa, fb;
>      int flags, r;
> @@ -407,12 +402,12 @@ uint32_t helper_fcmp_ge(uint32_t a, uint32_t b)
>      set_float_exception_flags(0, &env->fp_status);
>      r = !float32_lt(fa.f, fb.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags & float_flag_invalid);
> +    update_fpu_flags(env, flags & float_flag_invalid);
>  
>      return r;
>  }
>  
> -uint32_t helper_flt(uint32_t a)
> +uint32_t helper_flt(CPUMBState *env, uint32_t a)
>  {
>      CPU_FloatU fd, fa;
>  
> @@ -421,7 +416,7 @@ uint32_t helper_flt(uint32_t a)
>      return fd.l;
>  }
>  
> -uint32_t helper_fint(uint32_t a)
> +uint32_t helper_fint(CPUMBState *env, uint32_t a)
>  {
>      CPU_FloatU fa;
>      uint32_t r;
> @@ -431,12 +426,12 @@ uint32_t helper_fint(uint32_t a)
>      fa.l = a;
>      r = float32_to_int32(fa.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags);
> +    update_fpu_flags(env, flags);
>  
>      return r;
>  }
>  
> -uint32_t helper_fsqrt(uint32_t a)
> +uint32_t helper_fsqrt(CPUMBState *env, uint32_t a)
>  {
>      CPU_FloatU fd, fa;
>      int flags;
> @@ -445,7 +440,7 @@ uint32_t helper_fsqrt(uint32_t a)
>      fa.l = a;
>      fd.l = float32_sqrt(fa.f, &env->fp_status);
>      flags = get_float_exception_flags(&env->fp_status);
> -    update_fpu_flags(flags);
> +    update_fpu_flags(env, flags);
>  
>      return fd.l;
>  }
> @@ -463,7 +458,8 @@ uint32_t helper_pcmpbf(uint32_t a, uint32_t b)
>      return 0;
>  }
>  
> -void helper_memalign(uint32_t addr, uint32_t dr, uint32_t wr, uint32_t mask)
> +void helper_memalign(CPUMBState *env, uint32_t addr, uint32_t dr, uint32_t wr,
> +                     uint32_t mask)
>  {
>      if (addr & mask) {
>              qemu_log_mask(CPU_LOG_INT,
> @@ -478,45 +474,39 @@ void helper_memalign(uint32_t addr, uint32_t dr, uint32_t wr, uint32_t mask)
>              if (!(env->sregs[SR_MSR] & MSR_EE)) {
>                  return;
>              }
> -            helper_raise_exception(EXCP_HW_EXCP);
> +            helper_raise_exception(env, EXCP_HW_EXCP);
>      }
>  }
>  
> -void helper_stackprot(uint32_t addr)
> +void helper_stackprot(CPUMBState *env, uint32_t addr)
>  {
>      if (addr < env->slr || addr > env->shr) {
>              qemu_log("Stack protector violation at %x %x %x\n",
>                       addr, env->slr, env->shr);
>              env->sregs[SR_EAR] = addr;
>              env->sregs[SR_ESR] = ESR_EC_STACKPROT;
> -            helper_raise_exception(EXCP_HW_EXCP);
> +            helper_raise_exception(env, EXCP_HW_EXCP);
>      }
>  }
>  
>  #if !defined(CONFIG_USER_ONLY)
>  /* Writes/reads to the MMU's special regs end up here.  */
> -uint32_t helper_mmu_read(uint32_t rn)
> +uint32_t helper_mmu_read(CPUMBState *env, uint32_t rn)
>  {
>      return mmu_read(env, rn);
>  }
>  
> -void helper_mmu_write(uint32_t rn, uint32_t v)
> +void helper_mmu_write(CPUMBState *env, uint32_t rn, uint32_t v)
>  {
>      mmu_write(env, rn, v);
>  }
>  
> -void cpu_unassigned_access(CPUMBState *env1, target_phys_addr_t addr,
> +void cpu_unassigned_access(CPUMBState *env, target_phys_addr_t addr,
>                             int is_write, int is_exec, int is_asi, int size)
>  {
> -    CPUMBState *saved_env;
> -
> -    saved_env = env;
> -    env = env1;
> -
>      qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n",
>               addr, is_write, is_exec);
>      if (!(env->sregs[SR_MSR] & MSR_EE)) {
> -        env = saved_env;
>          return;
>      }
>  
> @@ -524,14 +514,13 @@ void cpu_unassigned_access(CPUMBState *env1, target_phys_addr_t addr,
>      if (is_exec) {
>          if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) {
>              env->sregs[SR_ESR] = ESR_EC_INSN_BUS;
> -            helper_raise_exception(EXCP_HW_EXCP);
> +            helper_raise_exception(env, EXCP_HW_EXCP);
>          }
>      } else {
>          if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) {
>              env->sregs[SR_ESR] = ESR_EC_DATA_BUS;
> -            helper_raise_exception(EXCP_HW_EXCP);
> +            helper_raise_exception(env, EXCP_HW_EXCP);
>          }
>      }
> -    env = saved_env;
>  }
>  #endif
> diff --git a/target-microblaze/translate.c b/target-microblaze/translate.c
> index 7470149..7c25530 100644
> --- a/target-microblaze/translate.c
> +++ b/target-microblaze/translate.c
> @@ -126,7 +126,7 @@ static inline void t_gen_raise_exception(DisasContext *dc, uint32_t index)
>  
>      t_sync_flags(dc);
>      tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
> -    gen_helper_raise_exception(tmp);
> +    gen_helper_raise_exception(cpu_env, tmp);
>      tcg_temp_free_i32(tmp);
>      dc->is_jmp = DISAS_UPDATE;
>  }
> @@ -503,9 +503,9 @@ static void dec_msr(DisasContext *dc)
>          sr &= 7;
>          LOG_DIS("m%ss sr%d r%d imm=%x\n", to ? "t" : "f", sr, dc->ra, dc->imm);
>          if (to)
> -            gen_helper_mmu_write(tcg_const_tl(sr), cpu_R[dc->ra]);
> +            gen_helper_mmu_write(cpu_env, tcg_const_tl(sr), cpu_R[dc->ra]);
>          else
> -            gen_helper_mmu_read(cpu_R[dc->rd], tcg_const_tl(sr));
> +            gen_helper_mmu_read(cpu_R[dc->rd], cpu_env, tcg_const_tl(sr));
>          return;
>      }
>  #endif
> @@ -704,9 +704,11 @@ static void dec_div(DisasContext *dc)
>      }
>  
>      if (u)
> -        gen_helper_divu(cpu_R[dc->rd], *(dec_alu_op_b(dc)), cpu_R[dc->ra]);
> +        gen_helper_divu(cpu_R[dc->rd], cpu_env, *(dec_alu_op_b(dc)),
> +                        cpu_R[dc->ra]);
>      else
> -        gen_helper_divs(cpu_R[dc->rd], *(dec_alu_op_b(dc)), cpu_R[dc->ra]);
> +        gen_helper_divs(cpu_R[dc->rd], cpu_env, *(dec_alu_op_b(dc)),
> +                        cpu_R[dc->ra]);
>      if (!dc->rd)
>          tcg_gen_movi_tl(cpu_R[dc->rd], 0);
>  }
> @@ -912,7 +914,7 @@ static inline TCGv *compute_ldst_addr(DisasContext *dc, TCGv *t)
>          tcg_gen_add_tl(*t, cpu_R[dc->ra], cpu_R[dc->rb]);
>  
>          if (stackprot) {
> -            gen_helper_stackprot(*t);
> +            gen_helper_stackprot(cpu_env, *t);
>          }
>          return t;
>      }
> @@ -930,7 +932,7 @@ static inline TCGv *compute_ldst_addr(DisasContext *dc, TCGv *t)
>      }
>  
>      if (stackprot) {
> -        gen_helper_stackprot(*t);
> +        gen_helper_stackprot(cpu_env, *t);
>      }
>      return t;
>  }
> @@ -1056,7 +1058,7 @@ static void dec_load(DisasContext *dc)
>          gen_load(dc, v, *addr, size);
>  
>          tcg_gen_movi_tl(cpu_SR[SR_PC], dc->pc);
> -        gen_helper_memalign(*addr, tcg_const_tl(dc->rd),
> +        gen_helper_memalign(cpu_env, *addr, tcg_const_tl(dc->rd),
>                              tcg_const_tl(0), tcg_const_tl(size - 1));
>          if (dc->rd) {
>              if (rev) {
> @@ -1218,7 +1220,7 @@ static void dec_store(DisasContext *dc)
>           *        the alignment checks in between the probe and the mem
>           *        access.
>           */
> -        gen_helper_memalign(*addr, tcg_const_tl(dc->rd),
> +        gen_helper_memalign(cpu_env, *addr, tcg_const_tl(dc->rd),
>                              tcg_const_tl(1), tcg_const_tl(size - 1));
>      }
>  
> @@ -1493,49 +1495,53 @@ static void dec_fpu(DisasContext *dc)
>  
>      switch (fpu_insn) {
>          case 0:
> -            gen_helper_fadd(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
> +            gen_helper_fadd(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
> +                            cpu_R[dc->rb]);
>              break;
>  
>          case 1:
> -            gen_helper_frsub(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
> +            gen_helper_frsub(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
> +                             cpu_R[dc->rb]);
>              break;
>  
>          case 2:
> -            gen_helper_fmul(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
> +            gen_helper_fmul(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
> +                            cpu_R[dc->rb]);
>              break;
>  
>          case 3:
> -            gen_helper_fdiv(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
> +            gen_helper_fdiv(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra],
> +                            cpu_R[dc->rb]);
>              break;
>  
>          case 4:
>              switch ((dc->ir >> 4) & 7) {
>                  case 0:
> -                    gen_helper_fcmp_un(cpu_R[dc->rd],
> +                    gen_helper_fcmp_un(cpu_R[dc->rd], cpu_env,
>                                         cpu_R[dc->ra], cpu_R[dc->rb]);
>                      break;
>                  case 1:
> -                    gen_helper_fcmp_lt(cpu_R[dc->rd],
> +                    gen_helper_fcmp_lt(cpu_R[dc->rd], cpu_env,
>                                         cpu_R[dc->ra], cpu_R[dc->rb]);
>                      break;
>                  case 2:
> -                    gen_helper_fcmp_eq(cpu_R[dc->rd],
> +                    gen_helper_fcmp_eq(cpu_R[dc->rd], cpu_env,
>                                         cpu_R[dc->ra], cpu_R[dc->rb]);
>                      break;
>                  case 3:
> -                    gen_helper_fcmp_le(cpu_R[dc->rd],
> +                    gen_helper_fcmp_le(cpu_R[dc->rd], cpu_env,
>                                         cpu_R[dc->ra], cpu_R[dc->rb]);
>                      break;
>                  case 4:
> -                    gen_helper_fcmp_gt(cpu_R[dc->rd],
> +                    gen_helper_fcmp_gt(cpu_R[dc->rd], cpu_env,
>                                         cpu_R[dc->ra], cpu_R[dc->rb]);
>                      break;
>                  case 5:
> -                    gen_helper_fcmp_ne(cpu_R[dc->rd],
> +                    gen_helper_fcmp_ne(cpu_R[dc->rd], cpu_env,
>                                         cpu_R[dc->ra], cpu_R[dc->rb]);
>                      break;
>                  case 6:
> -                    gen_helper_fcmp_ge(cpu_R[dc->rd],
> +                    gen_helper_fcmp_ge(cpu_R[dc->rd], cpu_env,
>                                         cpu_R[dc->ra], cpu_R[dc->rb]);
>                      break;
>                  default:
> @@ -1552,21 +1558,21 @@ static void dec_fpu(DisasContext *dc)
>              if (!dec_check_fpuv2(dc)) {
>                  return;
>              }
> -            gen_helper_flt(cpu_R[dc->rd], cpu_R[dc->ra]);
> +            gen_helper_flt(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
>              break;
>  
>          case 6:
>              if (!dec_check_fpuv2(dc)) {
>                  return;
>              }
> -            gen_helper_fint(cpu_R[dc->rd], cpu_R[dc->ra]);
> +            gen_helper_fint(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
>              break;
>  
>          case 7:
>              if (!dec_check_fpuv2(dc)) {
>                  return;
>              }
> -            gen_helper_fsqrt(cpu_R[dc->rd], cpu_R[dc->ra]);
> +            gen_helper_fsqrt(cpu_R[dc->rd], cpu_env, cpu_R[dc->ra]);
>              break;
>  
>          default:
> @@ -1662,7 +1668,7 @@ static inline void decode(DisasContext *dc)
>      if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
>          tcg_gen_debug_insn_start(dc->pc);
>  
> -    dc->ir = ir = ldl_code(dc->pc);
> +    dc->ir = ir = cpu_ldl_code(cpu_single_env, dc->pc);
>      LOG_DIS("%8.8x\t", dc->ir);

Similarly to the sh4 patch, it should be quite easy to just pass env to
decode() and use it there instead of cpu_single_env.

>      if (dc->ir)
> @@ -1871,7 +1877,7 @@ gen_intermediate_code_internal(CPUMBState *env, TranslationBlock *tb,
>          if (dc->is_jmp != DISAS_JUMP) {
>              tcg_gen_movi_tl(cpu_SR[SR_PC], npc);
>          }
> -        gen_helper_raise_exception(tmp);
> +        gen_helper_raise_exception(cpu_env, tmp);
>          tcg_temp_free_i32(tmp);
>      } else {
>          switch(dc->is_jmp) {
> -- 
> 1.7.2.5
> 
> 
> 

-- 
Aurelien Jarno                          GPG: 1024D/F1BCDB73
aurelien@aurel32.net                 http://www.aurel32.net