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| author | Peter Maydell <peter.maydell@linaro.org> | 2010-11-24 15:20:04 +0000 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@nokia.com> | 2010-12-03 15:09:39 +0200 |
| commit | 0165329578eb8f40901825177c0874efb815e342 (patch) | |
| tree | e0152d7d7bd3a924f683a4649e9fc312845cafbe | |
| parent | 5f0b7c888b5e626d61e0969a6c0dbf4fcf0f522c (diff) | |
| download | focaccia-qemu-0165329578eb8f40901825177c0874efb815e342.tar.gz focaccia-qemu-0165329578eb8f40901825177c0874efb815e342.zip | |
ARM: Expose vfp_get_fpscr() and vfp_set_fpscr() to C code
Expose the vfp_get_fpscr() and vfp_set_fpscr() functions to C code as well as generated code, so we can use them to read and write the FPSCR when saving and restoring VFP registers across signal handlers in linux-user mode. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
| -rw-r--r-- | target-arm/cpu.h | 4 | ||||
| -rw-r--r-- | target-arm/helper.c | 10 |
2 files changed, 14 insertions, 0 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h index 0284bad0f9..340933ef50 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -300,6 +300,10 @@ static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask) } } +/* Return the current FPSCR value. */ +uint32_t vfp_get_fpscr(CPUARMState *env); +void vfp_set_fpscr(CPUARMState *env, uint32_t val); + enum arm_cpu_mode { ARM_CPU_MODE_USR = 0x10, ARM_CPU_MODE_FIQ = 0x11, diff --git a/target-arm/helper.c b/target-arm/helper.c index 94aef393e2..2a1f44860b 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -2251,6 +2251,11 @@ uint32_t HELPER(vfp_get_fpscr)(CPUState *env) return fpscr; } +uint32_t vfp_get_fpscr(CPUState *env) +{ + return HELPER(vfp_get_fpscr)(env); +} + /* Convert vfp exception flags to target form. */ static inline int vfp_exceptbits_to_host(int target_bits) { @@ -2307,6 +2312,11 @@ void HELPER(vfp_set_fpscr)(CPUState *env, uint32_t val) set_float_exception_flags(i, &env->vfp.fp_status); } +void vfp_set_fpscr(CPUState *env, uint32_t val) +{ + HELPER(vfp_set_fpscr)(env, val); +} + #define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p)) #define VFP_BINOP(name) \ |