From 0165329578eb8f40901825177c0874efb815e342 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Wed, 24 Nov 2010 15:20:04 +0000 Subject: 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 Signed-off-by: Riku Voipio --- target-arm/cpu.h | 4 ++++ target-arm/helper.c | 10 ++++++++++ 2 files changed, 14 insertions(+) (limited to 'target-arm') 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) \ -- cgit v1.2.3