arm64: asm-offsets: add S_FP

So that assembly code can more easily manipulate the FP (x29) within a
pt_regs, add an S_FP asm-offsets definition.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Torsten Duwe <duwe@suse.de>
Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Tested-by: Torsten Duwe <duwe@suse.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>

diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c
index 2146857..a5bdce8 100644 (file)
--- a/arch/arm64/kernel/asm-offsets.c
+++ b/arch/arm64/kernel/asm-offsets.c
@@ -56,6 +56,7 @@ int main(void)
   DEFINE(S_X24,                        offsetof(struct pt_regs, regs[24]));
   DEFINE(S_X26,                        offsetof(struct pt_regs, regs[26]));
   DEFINE(S_X28,                        offsetof(struct pt_regs, regs[28]));
+  DEFINE(S_FP,                 offsetof(struct pt_regs, regs[29]));
   DEFINE(S_LR,                 offsetof(struct pt_regs, regs[30]));
   DEFINE(S_SP,                 offsetof(struct pt_regs, sp));
   DEFINE(S_PSTATE,             offsetof(struct pt_regs, pstate));