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Support the MIPS32 / MIPS64 DSP ASE.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2005-05-31 11:49:19 +00:00
parent 10f650db1b
commit e50c0a8fa6
34 changed files with 876 additions and 139 deletions
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58
arch/mips/kernel/process.c
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@ -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();