diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2015-07-27 21:58:14 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-09-03 12:07:55 +0200 |
| commit | 778561006e5891801ac794ddf7b21148a5555e35 (patch) | |
| tree | f4a19a545baf472b4021c4b0389e73087e9e81d8 | |
| parent | MIPS: Simplify EVA FP context handling code (diff) | |
| download | linux-778561006e5891801ac794ddf7b21148a5555e35.tar.xz linux-778561006e5891801ac794ddf7b21148a5555e35.zip | |
MIPS: Add offsets to sigcontext FP fields to struct mips_abi
Add fields to struct mips_abi, which holds information regarding the
kernel-userland ABI regarding signals, to specify the offsets to the FP
related fields within the appropriate variant of struct sigcontext.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Matthew Fortune <matthew.fortune@imgtec.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linux-kernel@vger.kernel.org
Cc: Richard Weinberger <richard@nod.at>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Maciej W. Rozycki <macro@codesourcery.com>
Patchwork: https://patchwork.linux-mips.org/patch/10788/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/include/asm/abi.h | 4 | ||||
| -rw-r--r-- | arch/mips/kernel/signal.c | 6 | ||||
| -rw-r--r-- | arch/mips/kernel/signal32.c | 6 | ||||
| -rw-r--r-- | arch/mips/kernel/signal_n32.c | 6 |
4 files changed, 19 insertions, 3 deletions
diff --git a/arch/mips/include/asm/abi.h b/arch/mips/include/asm/abi.h index 7186bb51b89b..37f84078e78a 100644 --- a/arch/mips/include/asm/abi.h +++ b/arch/mips/include/asm/abi.h @@ -20,6 +20,10 @@ struct mips_abi { struct pt_regs *regs, sigset_t *set); const unsigned long rt_signal_return_offset; const unsigned long restart; + + unsigned off_sc_fpregs; + unsigned off_sc_fpc_csr; + unsigned off_sc_used_math; }; #endif /* _ASM_ABI_H */ diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index 796c7d856d7d..ddf83189fff8 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -521,7 +521,11 @@ struct mips_abi mips_abi = { .setup_rt_frame = setup_rt_frame, .rt_signal_return_offset = offsetof(struct mips_vdso, rt_signal_trampoline), - .restart = __NR_restart_syscall + .restart = __NR_restart_syscall, + + .off_sc_fpregs = offsetof(struct sigcontext, sc_fpregs), + .off_sc_fpc_csr = offsetof(struct sigcontext, sc_fpc_csr), + .off_sc_used_math = offsetof(struct sigcontext, sc_used_math), }; static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index 5d7f2634996f..da70ea5cf6ec 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -585,7 +585,11 @@ struct mips_abi mips_abi_32 = { .setup_rt_frame = setup_rt_frame_32, .rt_signal_return_offset = offsetof(struct mips_vdso, o32_rt_signal_trampoline), - .restart = __NR_O32_restart_syscall + .restart = __NR_O32_restart_syscall, + + .off_sc_fpregs = offsetof(struct sigcontext32, sc_fpregs), + .off_sc_fpc_csr = offsetof(struct sigcontext32, sc_fpc_csr), + .off_sc_used_math = offsetof(struct sigcontext32, sc_used_math), }; static int signal32_init(void) diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index f1d4751eead0..0d017fdcaf07 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -153,5 +153,9 @@ struct mips_abi mips_abi_n32 = { .setup_rt_frame = setup_rt_frame_n32, .rt_signal_return_offset = offsetof(struct mips_vdso, n32_rt_signal_trampoline), - .restart = __NR_N32_restart_syscall + .restart = __NR_N32_restart_syscall, + + .off_sc_fpregs = offsetof(struct sigcontext, sc_fpregs), + .off_sc_fpc_csr = offsetof(struct sigcontext, sc_fpc_csr), + .off_sc_used_math = offsetof(struct sigcontext, sc_used_math), }; |