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[ARM] 5387/1: Add ptrace VFP support on ARM

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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>
This commit is contained in:
Catalin Marinas
2009-02-11 13:12:56 +01:00
committed by Russell King
parent f373e8c063
commit 3d1228ead6
7 changed files with 120 additions and 4 deletions
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9
arch/arm/include/asm/user.h
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@@ -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 */