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| author | Catalin Marinas <catalin.marinas@arm.com> | 2009-02-11 13:12:56 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-02-12 10:59:43 +0000 |
| commit | 3d1228ead618b88e8606015cbabc49019981805d (patch) | |
| tree | 5d44c936c12ff2e99732f535dd393af201e7fe67 /arch/arm/include | |
| parent | f373e8c0639f1720d2d0fe414990f504e113c2ba (diff) | |
| download | linux-3.10-3d1228ead618b88e8606015cbabc49019981805d.tar.gz linux-3.10-3d1228ead618b88e8606015cbabc49019981805d.tar.bz2 linux-3.10-3d1228ead618b88e8606015cbabc49019981805d.zip | |
[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 <paul@codesourcery.com>
Cc: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/ptrace.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/thread_info.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/user.h | 9 |
3 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index 73192618f1c..236a06b9b7c 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 68b9ec82a37..b9dc8a84257 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 825c1e7c582..df95e050f9d 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 */ |