diff options
| author | Laurent Vivier <laurent@vivier.eu> | 2017-09-14 18:35:05 +0200 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2017-10-16 16:00:56 +0300 |
| commit | ee46a46b02e58d82ba27943746f6e7e1ffc1a173 (patch) | |
| tree | a27a6c814a00e3b1bc63fc22ecbc8e525a5a1e84 /linux-user | |
| parent | 5f9cee46cd4ec4600e1a2fdcca20adcf30348f9e (diff) | |
| download | qemu-ee46a46b02e58d82ba27943746f6e7e1ffc1a173.tar.gz | |
target/m68k,linux-user: manage FP registers in ucontext
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/signal.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index cc0c3fcee9..7a238aaea1 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -5704,6 +5704,24 @@ give_sigsegv: force_sigsegv(sig); } +static inline void target_rt_save_fpu_state(struct target_ucontext *uc, + CPUM68KState *env) +{ + int i; + target_fpregset_t *fpregs = &uc->tuc_mcontext.fpregs; + + __put_user(env->fpcr, &fpregs->f_fpcntl[0]); + __put_user(env->fpsr, &fpregs->f_fpcntl[1]); + /* fpiar is not emulated */ + + for (i = 0; i < 8; i++) { + uint32_t high = env->fregs[i].d.high << 16; + __put_user(high, &fpregs->f_fpregs[i * 3]); + __put_user(env->fregs[i].d.low, + (uint64_t *)&fpregs->f_fpregs[i * 3 + 1]); + } +} + static inline int target_rt_setup_ucontext(struct target_ucontext *uc, CPUM68KState *env) { @@ -5730,9 +5748,32 @@ static inline int target_rt_setup_ucontext(struct target_ucontext *uc, __put_user(env->pc, &gregs[16]); __put_user(sr, &gregs[17]); + target_rt_save_fpu_state(uc, env); + return 0; } +static inline void target_rt_restore_fpu_state(CPUM68KState *env, + struct target_ucontext *uc) +{ + int i; + target_fpregset_t *fpregs = &uc->tuc_mcontext.fpregs; + uint32_t fpcr; + + __get_user(fpcr, &fpregs->f_fpcntl[0]); + cpu_m68k_set_fpcr(env, fpcr); + __get_user(env->fpsr, &fpregs->f_fpcntl[1]); + /* fpiar is not emulated */ + + for (i = 0; i < 8; i++) { + uint32_t high; + __get_user(high, &fpregs->f_fpregs[i * 3]); + env->fregs[i].d.high = high >> 16; + __get_user(env->fregs[i].d.low, + (uint64_t *)&fpregs->f_fpregs[i * 3 + 1]); + } +} + static inline int target_rt_restore_ucontext(CPUM68KState *env, struct target_ucontext *uc) { @@ -5764,6 +5805,8 @@ static inline int target_rt_restore_ucontext(CPUM68KState *env, __get_user(temp, &gregs[17]); cpu_m68k_set_ccr(env, temp); + target_rt_restore_fpu_state(env, uc); + return 0; badframe: |