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authorCatalin Marinas <catalin.marinas@arm.com>2009-02-11 13:12:56 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-02-12 10:59:43 +0000
commit3d1228ead618b88e8606015cbabc49019981805d (patch)
tree5d44c936c12ff2e99732f535dd393af201e7fe67 /arch/arm/include
parentf373e8c0639f1720d2d0fe414990f504e113c2ba (diff)
[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.h2
-rw-r--r--arch/arm/include/asm/thread_info.h2
-rw-r--r--arch/arm/include/asm/user.h9
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 */