From e50c0a8fa60da9ac0e0a70caa8a3a803815c1f2f Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Tue, 31 May 2005 11:49:19 +0000 Subject: Support the MIPS32 / MIPS64 DSP ASE. Signed-off-by: Ralf Baechle --- arch/mips/kernel/signal-common.h | 56 +++++++++++++++++++++++++++++++++++++--- 1 file changed, 52 insertions(+), 4 deletions(-) (limited to 'arch/mips/kernel/signal-common.h') diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h index f9234df53253..3208ff528cd2 100644 --- a/arch/mips/kernel/signal-common.h +++ b/arch/mips/kernel/signal-common.h @@ -8,13 +8,14 @@ * Copyright (C) 1999, 2000 Silicon Graphics, Inc. */ +#include + static inline int setup_sigcontext(struct pt_regs *regs, struct sigcontext *sc) { int err = 0; err |= __put_user(regs->cp0_epc, &sc->sc_pc); - err |= __put_user(regs->cp0_status, &sc->sc_status); #define save_gp_reg(i) do { \ err |= __put_user(regs->regs[i], &sc->sc_regs[i]); \ @@ -30,10 +31,32 @@ setup_sigcontext(struct pt_regs *regs, struct sigcontext *sc) save_gp_reg(31); #undef save_gp_reg +#ifdef CONFIG_32BIT err |= __put_user(regs->hi, &sc->sc_mdhi); err |= __put_user(regs->lo, &sc->sc_mdlo); - err |= __put_user(regs->cp0_cause, &sc->sc_cause); - err |= __put_user(regs->cp0_badvaddr, &sc->sc_badvaddr); + if (cpu_has_dsp) { + err |= __put_user(mfhi1(), &sc->sc_hi1); + err |= __put_user(mflo1(), &sc->sc_lo1); + err |= __put_user(mfhi2(), &sc->sc_hi2); + err |= __put_user(mflo2(), &sc->sc_lo2); + err |= __put_user(mfhi3(), &sc->sc_hi3); + err |= __put_user(mflo3(), &sc->sc_lo3); + err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp); + } +#endif +#ifdef CONFIG_64BIT + err |= __put_user(regs->hi, &sc->sc_hi[0]); + err |= __put_user(regs->lo, &sc->sc_lo[0]); + if (cpu_has_dsp) { + err |= __put_user(mfhi1(), &sc->sc_hi[1]); + err |= __put_user(mflo1(), &sc->sc_lo[1]); + err |= __put_user(mfhi2(), &sc->sc_hi[2]); + err |= __put_user(mflo2(), &sc->sc_lo[2]); + err |= __put_user(mfhi3(), &sc->sc_hi[3]); + err |= __put_user(mflo3(), &sc->sc_lo[3]); + err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp); + } +#endif err |= __put_user(!!used_math(), &sc->sc_used_math); @@ -61,15 +84,40 @@ out: static inline int restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc) { - int err = 0; unsigned int used_math; + unsigned long treg; + int err = 0; /* Always make any pending restarted system calls return -EINTR */ current_thread_info()->restart_block.fn = do_no_restart_syscall; err |= __get_user(regs->cp0_epc, &sc->sc_pc); +#ifdef CONFIG_32BIT err |= __get_user(regs->hi, &sc->sc_mdhi); err |= __get_user(regs->lo, &sc->sc_mdlo); + if (cpu_has_dsp) { + err |= __get_user(treg, &sc->sc_hi1); mthi1(treg); + err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg); + err |= __get_user(treg, &sc->sc_hi2); mthi2(treg); + err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg); + err |= __get_user(treg, &sc->sc_hi3); mthi3(treg); + err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg); + err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); + } +#endif +#ifdef CONFIG_64BIT + err |= __get_user(regs->hi, &sc->sc_hi[0]); + err |= __get_user(regs->lo, &sc->sc_lo[0]); + if (cpu_has_dsp) { + err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg); + err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg); + err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg); + err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg); + err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg); + err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg); + err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); + } +#endif #define restore_gp_reg(i) do { \ err |= __get_user(regs->regs[i], &sc->sc_regs[i]); \ -- cgit v1.2.3 From 02416dcf5a94af34bcd28b4baf25bbbf399d8136 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 15 Jun 2005 13:00:12 +0000 Subject: Redo RM9000 workaround which along with other DSP ASE changes was causing some headache for debuggers knowing about signal frames. Signed-off-by: Ralf Baechle --- arch/mips/kernel/signal-common.h | 34 ++++++++++++++++++++++++++++------ 1 file changed, 28 insertions(+), 6 deletions(-) (limited to 'arch/mips/kernel/signal-common.h') diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h index 3208ff528cd2..0f66ae5838b9 100644 --- a/arch/mips/kernel/signal-common.h +++ b/arch/mips/kernel/signal-common.h @@ -160,7 +160,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc) static inline void * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) { - unsigned long sp, almask; + unsigned long sp; /* Default to using normal stack */ sp = regs->regs[29]; @@ -176,10 +176,32 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags (sp) == 0)) sp = current->sas_ss_sp + current->sas_ss_size; - if (PLAT_TRAMPOLINE_STUFF_LINE) - almask = ~(PLAT_TRAMPOLINE_STUFF_LINE - 1); - else - almask = ALMASK; + return (void *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? 32 : ALMASK)); +} + +static inline int install_sigtramp(unsigned int __user *tramp, + unsigned int syscall) +{ + int err; - return (void *)((sp - frame_size) & almask); + /* + * Set up the return code ... + * + * li v0, __NR__foo_sigreturn + * syscall + */ + + err = __put_user(0x24020000 + syscall, tramp + 0); + err |= __put_user(0x0000000c , tramp + 1); + if (ICACHE_REFILLS_WORKAROUND_WAR) { + err |= __put_user(0, tramp + 2); + err |= __put_user(0, tramp + 3); + err |= __put_user(0, tramp + 4); + err |= __put_user(0, tramp + 5); + err |= __put_user(0, tramp + 6); + err |= __put_user(0, tramp + 7); + } + flush_cache_sigtramp((unsigned long) tramp); + + return err; } -- cgit v1.2.3