diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2005-05-31 11:49:19 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2005-10-29 19:31:17 +0100 |
| commit | e50c0a8fa60da9ac0e0a70caa8a3a803815c1f2f (patch) | |
| tree | 1928e8b0a4b7fb615e5a9f65dc934ba2e74cb9cd /arch/mips/kernel/process.c | |
| parent | 10f650db1bcc193ea07d4f8c2f07315da38ea0c4 (diff) | |
Support the MIPS32 / MIPS64 DSP ASE.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/process.c')
| -rw-r--r-- | arch/mips/kernel/process.c | 58 |
1 files changed, 56 insertions, 2 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 368526af5f5e..98432097a86a 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -25,8 +25,10 @@ #include <linux/init.h> #include <linux/completion.h> +#include <asm/abi.h> #include <asm/bootinfo.h> #include <asm/cpu.h> +#include <asm/dsp.h> #include <asm/fpu.h> #include <asm/pgtable.h> #include <asm/system.h> @@ -54,6 +56,54 @@ ATTRIB_NORET void cpu_idle(void) } } +extern int do_signal(sigset_t *oldset, struct pt_regs *regs); +extern int do_signal32(sigset_t *oldset, struct pt_regs *regs); + +/* + * Native o32 and N64 ABI without DSP ASE + */ +extern void setup_frame(struct k_sigaction * ka, struct pt_regs *regs, + int signr, sigset_t *set); +extern void setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs, + int signr, sigset_t *set, siginfo_t *info); + +struct mips_abi mips_abi = { + .do_signal = do_signal, +#ifdef CONFIG_TRAD_SIGNALS + .setup_frame = setup_frame, +#endif + .setup_rt_frame = setup_rt_frame +}; + +#ifdef CONFIG_MIPS32_O32 +/* + * o32 compatibility on 64-bit kernels, without DSP ASE + */ +extern void setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs, + int signr, sigset_t *set); +extern void setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, + int signr, sigset_t *set, siginfo_t *info); + +struct mips_abi mips_abi_32 = { + .do_signal = do_signal32, + .setup_frame = setup_frame_32, + .setup_rt_frame = setup_rt_frame_32 +}; +#endif /* CONFIG_MIPS32_O32 */ + +#ifdef CONFIG_MIPS32_N32 +/* + * N32 on 64-bit kernels, without DSP ASE + */ +extern void setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs, + int signr, sigset_t *set, siginfo_t *info); + +struct mips_abi mips_abi_n32 = { + .do_signal = do_signal, + .setup_rt_frame = setup_rt_frame_n32 +}; +#endif /* CONFIG_MIPS32_N32 */ + asmlinkage void ret_from_fork(void); void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp) @@ -70,6 +120,8 @@ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp) regs->cp0_status = status; clear_used_math(); lose_fpu(); + if (cpu_has_dsp) + __init_dsp(); regs->cp0_epc = pc; regs->regs[29] = sp; current_thread_info()->addr_limit = USER_DS; @@ -95,9 +147,11 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp, preempt_disable(); - if (is_fpu_owner()) { + if (is_fpu_owner()) save_fp(p); - } + + if (cpu_has_dsp) + save_dsp(p); preempt_enable(); |