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| author |  H. Peter Anvin (Intel) <hpa@zytor.com>
| 2021-05-10 11:53:10 -0700 |
|---|---|---|
| committer |  Ingo Molnar <mingo@kernel.org>
| 2021-05-12 10:49:13 +0200 |
| commit | 6627eb25e40cc8d135d3f8d5391851d18ac497d7 (patch) | |
| tree | 35b3aa2b0091f5bf8ccb4a624f42df215b83f453 /arch/x86/entry | |
| parent | x86/asm: Use _ASM_BYTES() in <asm/nops.h> (diff) | |
| download | linux-6627eb25e40cc8d135d3f8d5391851d18ac497d7.tar.gz linux-6627eb25e40cc8d135d3f8d5391851d18ac497d7.tar.bz2 linux-6627eb25e40cc8d135d3f8d5391851d18ac497d7.zip | |
x86/entry: Unify definitions from <asm/calling.h> and <asm/ptrace-abi.h>
The register offsets in <asm/ptrace-abi.h> are duplicated in
entry/calling.h, but are formatted differently and therefore not
compatible. Use the version from <asm/ptrace-abi.h> consistently.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210510185316.3307264-2-hpa@zytor.com
Diffstat (limited to 'arch/x86/entry')
| -rw-r--r-- | arch/x86/entry/calling.h | 36 |
1 files changed, 1 insertions, 35 deletions
diff --git a/arch/x86/entry/calling.h b/arch/x86/entry/calling.h index 07a9331d55e7..7436d4a74ecb 100644 --- a/arch/x86/entry/calling.h +++ b/arch/x86/entry/calling.h @@ -6,6 +6,7 @@ #include <asm/percpu.h> #include <asm/asm-offsets.h> #include <asm/processor-flags.h> +#include <asm/ptrace-abi.h> /* @@ -62,41 +63,6 @@ For 32-bit we have the following conventions - kernel is built with * for assembly code: */ -/* The layout forms the "struct pt_regs" on the stack: */ -/* - * C ABI says these regs are callee-preserved. They aren't saved on kernel entry - * unless syscall needs a complete, fully filled "struct pt_regs". - */ -#define R15 0*8 -#define R14 1*8 -#define R13 2*8 -#define R12 3*8 -#define RBP 4*8 -#define RBX 5*8 -/* These regs are callee-clobbered. Always saved on kernel entry. */ -#define R11 6*8 -#define R10 7*8 -#define R9 8*8 -#define R8 9*8 -#define RAX 10*8 -#define RCX 11*8 -#define RDX 12*8 -#define RSI 13*8 -#define RDI 14*8 -/* - * On syscall entry, this is syscall#. On CPU exception, this is error code. - * On hw interrupt, it's IRQ number: - */ -#define ORIG_RAX 15*8 -/* Return frame for iretq */ -#define RIP 16*8 -#define CS 17*8 -#define EFLAGS 18*8 -#define RSP 19*8 -#define SS 20*8 - -#define SIZEOF_PTREGS 21*8 - .macro PUSH_AND_CLEAR_REGS rdx=%rdx rax=%rax save_ret=0 .if \save_ret pushq %rsi /* pt_regs->si */ |