From 3d1228ead618b88e8606015cbabc49019981805d Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 11 Feb 2009 13:12:56 +0100 Subject: [ARM] 5387/1: Add ptrace VFP support on ARM This patch adds ptrace support for setting and getting the VFP registers using PTRACE_SETVFPREGS and PTRACE_GETVFPREGS. The user_vfp structure defined in asm/user.h contains 32 double registers (to cover VFPv3 and Neon hardware) and the FPSCR register. Cc: Paul Brook Cc: Daniel Jacobowitz Signed-off-by: Catalin Marinas Signed-off-by: Russell King --- arch/arm/include/asm/ptrace.h | 2 ++ arch/arm/include/asm/thread_info.h | 2 ++ arch/arm/include/asm/user.h | 9 +++++++++ 3 files changed, 13 insertions(+) (limited to 'arch/arm/include') diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index 73192618f1c2..236a06b9b7ce 100644 --- a/arch/arm/include/asm/ptrace.h +++ b/arch/arm/include/asm/ptrace.h @@ -27,6 +27,8 @@ /* PTRACE_SYSCALL is 24 */ #define PTRACE_GETCRUNCHREGS 25 #define PTRACE_SETCRUNCHREGS 26 +#define PTRACE_GETVFPREGS 27 +#define PTRACE_SETVFPREGS 28 /* * PSR bits diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h index 68b9ec82a37f..b9dc8a842573 100644 --- a/arch/arm/include/asm/thread_info.h +++ b/arch/arm/include/asm/thread_info.h @@ -113,6 +113,8 @@ extern void iwmmxt_task_restore(struct thread_info *, void *); extern void iwmmxt_task_release(struct thread_info *); extern void iwmmxt_task_switch(struct thread_info *); +extern void vfp_sync_state(struct thread_info *thread); + #endif /* diff --git a/arch/arm/include/asm/user.h b/arch/arm/include/asm/user.h index 825c1e7c582d..df95e050f9dd 100644 --- a/arch/arm/include/asm/user.h +++ b/arch/arm/include/asm/user.h @@ -81,4 +81,13 @@ struct user{ #define HOST_TEXT_START_ADDR (u.start_code) #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) +/* + * User specific VFP registers. If only VFPv2 is present, registers 16 to 31 + * are ignored by the ptrace system call. + */ +struct user_vfp { + unsigned long long fpregs[32]; + unsigned long fpscr; +}; + #endif /* _ARM_USER_H */ -- cgit v1.2.1