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/asm-offsets.c | 26 +++++++++++++++--- arch/mips/kernel/branch.c | 19 ++++++++++++- arch/mips/kernel/cpu-probe.c | 3 +++ arch/mips/kernel/genex.S | 1 + arch/mips/kernel/process.c | 58 ++++++++++++++++++++++++++++++++++++++-- arch/mips/kernel/ptrace.c | 38 ++++++++++++++++++++++++++ arch/mips/kernel/ptrace32.c | 38 ++++++++++++++++++++++++++ arch/mips/kernel/r4k_fpu.S | 5 +--- arch/mips/kernel/scall32-o32.S | 2 +- arch/mips/kernel/setup.c | 9 +++++++ arch/mips/kernel/signal-common.h | 56 +++++++++++++++++++++++++++++++++++--- arch/mips/kernel/signal.c | 52 +++++++---------------------------- arch/mips/kernel/signal32.c | 34 ++++++++++++++++------- arch/mips/kernel/traps.c | 49 ++++++++++++++++++++++----------- 14 files changed, 308 insertions(+), 82 deletions(-) (limited to 'arch/mips') diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c index af69cdbdd50e..ca6b03c773be 100644 --- a/arch/mips/kernel/asm-offsets.c +++ b/arch/mips/kernel/asm-offsets.c @@ -95,7 +95,7 @@ void output_thread_info_defines(void) offset("#define TI_PRE_COUNT ", struct thread_info, preempt_count); offset("#define TI_ADDR_LIMIT ", struct thread_info, addr_limit); offset("#define TI_RESTART_BLOCK ", struct thread_info, restart_block); - offset("#define TI_TP_VALUE ", struct thread_info, tp_value); + offset("#define TI_TP_VALUE ", struct thread_info, tp_value); constant("#define _THREAD_SIZE_ORDER ", THREAD_SIZE_ORDER); constant("#define _THREAD_SIZE ", THREAD_SIZE); constant("#define _THREAD_MASK ", THREAD_MASK); @@ -241,6 +241,7 @@ void output_mm_defines(void) linefeed; } +#ifdef CONFIG_32BIT void output_sc_defines(void) { text("/* Linux sigcontext offsets. */"); @@ -252,10 +253,29 @@ void output_sc_defines(void) offset("#define SC_STATUS ", struct sigcontext, sc_status); offset("#define SC_FPC_CSR ", struct sigcontext, sc_fpc_csr); offset("#define SC_FPC_EIR ", struct sigcontext, sc_fpc_eir); - offset("#define SC_CAUSE ", struct sigcontext, sc_cause); - offset("#define SC_BADVADDR ", struct sigcontext, sc_badvaddr); + offset("#define SC_HI1 ", struct sigcontext, sc_hi1); + offset("#define SC_LO1 ", struct sigcontext, sc_lo1); + offset("#define SC_HI2 ", struct sigcontext, sc_hi2); + offset("#define SC_LO2 ", struct sigcontext, sc_lo2); + offset("#define SC_HI3 ", struct sigcontext, sc_hi3); + offset("#define SC_LO3 ", struct sigcontext, sc_lo3); linefeed; } +#endif + +#ifdef CONFIG_64BIT +void output_sc_defines(void) +{ + text("/* Linux sigcontext offsets. */"); + offset("#define SC_REGS ", struct sigcontext, sc_regs); + offset("#define SC_FPREGS ", struct sigcontext, sc_fpregs); + offset("#define SC_MDHI ", struct sigcontext, sc_hi); + offset("#define SC_MDLO ", struct sigcontext, sc_lo); + offset("#define SC_PC ", struct sigcontext, sc_pc); + offset("#define SC_FPC_CSR ", struct sigcontext, sc_fpc_csr); + linefeed; +} +#endif #ifdef CONFIG_MIPS32_COMPAT void output_sc32_defines(void) diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c index 56aea5f526a7..374de839558d 100644 --- a/arch/mips/kernel/branch.c +++ b/arch/mips/kernel/branch.c @@ -22,7 +22,7 @@ */ int __compute_return_epc(struct pt_regs *regs) { - unsigned int *addr, bit, fcr31; + unsigned int *addr, bit, fcr31, dspcontrol; long epc; union mips_instruction insn; @@ -99,6 +99,18 @@ int __compute_return_epc(struct pt_regs *regs) epc += 8; regs->cp0_epc = epc; break; + case bposge32_op: + if (!cpu_has_dsp) + goto sigill; + + dspcontrol = rddsp(0x01); + + if (dspcontrol >= 32) { + epc = epc + 4 + (insn.i_format.simmediate << 2); + } else + epc += 8; + regs->cp0_epc = epc; + break; } break; @@ -200,4 +212,9 @@ unaligned: printk("%s: unaligned epc - sending SIGBUS.\n", current->comm); force_sig(SIGBUS, current); return -EFAULT; + +sigill: + printk("%s: DSP branch but not DSP ASE - sending SIGBUS.\n", current->comm); + force_sig(SIGBUS, current); + return -EFAULT; } diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 552d2b6c191e..1ae7762fd084 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -482,6 +482,8 @@ static inline unsigned int decode_config3(struct cpuinfo_mips *c) if (config3 & MIPS_CONF3_SM) c->ases |= MIPS_ASE_SMARTMIPS; + if (config3 & MIPS_CONF3_DSP) + c->ases |= MIPS_ASE_DSP; return config3 & MIPS_CONF_M; } @@ -529,6 +531,7 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c) c->cputype = CPU_20KC; break; case PRID_IMP_24K: + case PRID_IMP_24KE: c->cputype = CPU_24K; break; case PRID_IMP_25KF: diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index e5021c758ef0..349ec301168f 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -291,6 +291,7 @@ NESTED(nmi_handler, PT_SIZE, sp) BUILD_HANDLER mdmx mdmx sti silent /* #22 */ BUILD_HANDLER watch watch sti verbose /* #23 */ BUILD_HANDLER mcheck mcheck cli verbose /* #24 */ + BUILD_HANDLER dsp dsp sti silent /* #26 */ BUILD_HANDLER reserved reserved sti verbose /* others */ #ifdef CONFIG_64BIT 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 #include +#include #include #include +#include #include #include #include @@ -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(); diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index 49821ee18984..2441e32ce820 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -30,6 +30,7 @@ #include #include +#include #include #include #include @@ -176,6 +177,27 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data) write_c0_status(flags); break; } + case DSP_BASE ... DSP_BASE + 5: + if (!cpu_has_dsp) { + tmp = 0; + ret = -EIO; + goto out_tsk; + } + if (child->thread.dsp.used_dsp) { + dspreg_t *dregs = __get_dsp_regs(child); + tmp = (unsigned long) (dregs[addr - DSP_BASE]); + } else { + tmp = -1; /* DSP registers yet used */ + } + break; + case DSP_CONTROL: + if (!cpu_has_dsp) { + tmp = 0; + ret = -EIO; + goto out_tsk; + } + tmp = child->thread.dsp.dspcontrol; + break; default: tmp = 0; ret = -EIO; @@ -248,6 +270,22 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data) else child->thread.fpu.soft.fcr31 = data; break; + case DSP_BASE ... DSP_BASE + 5: + if (!cpu_has_dsp) { + ret = -EIO; + break; + } + + dspreg_t *dregs = __get_dsp_regs(child); + dregs[addr - DSP_BASE] = data; + break; + case DSP_CONTROL: + if (!cpu_has_dsp) { + ret = -EIO; + break; + } + child->thread.dsp.dspcontrol = data; + break; default: /* The rest are not allowed. */ ret = -EIO; diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c index eb446e525908..5c45a5880226 100644 --- a/arch/mips/kernel/ptrace32.c +++ b/arch/mips/kernel/ptrace32.c @@ -26,6 +26,7 @@ #include #include +#include #include #include #include @@ -161,6 +162,27 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data) write_c0_status(flags); break; } + case DSP_BASE ... DSP_BASE + 5: + if (!cpu_has_dsp) { + tmp = 0; + ret = -EIO; + goto out_tsk; + } + if (child->thread.dsp.used_dsp) { + dspreg_t *dregs = __get_dsp_regs(child); + tmp = (unsigned long) (dregs[addr - DSP_BASE]); + } else { + tmp = -1; /* DSP registers yet used */ + } + break; + case DSP_CONTROL: + if (!cpu_has_dsp) { + tmp = 0; + ret = -EIO; + goto out_tsk; + } + tmp = child->thread.dsp.dspcontrol; + break; default: tmp = 0; ret = -EIO; @@ -230,6 +252,22 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data) else child->thread.fpu.soft.fcr31 = data; break; + case DSP_BASE ... DSP_BASE + 5: + if (!cpu_has_dsp) { + ret = -EIO; + break; + } + + dspreg_t *dregs = __get_dsp_regs(child); + dregs[addr - DSP_BASE] = data; + break; + case DSP_CONTROL: + if (!cpu_has_dsp) { + ret = -EIO; + break; + } + child->thread.dsp.dspcontrol = data; + break; default: /* The rest are not allowed. */ ret = -EIO; diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S index 1a14c6b18829..283a98508fc8 100644 --- a/arch/mips/kernel/r4k_fpu.S +++ b/arch/mips/kernel/r4k_fpu.S @@ -32,7 +32,7 @@ .set noreorder .set mips3 - /* Save floating point context */ + LEAF(_save_fp_context) cfc1 t1, fcr31 @@ -74,9 +74,6 @@ LEAF(_save_fp_context) EX sdc1 $f28, SC_FPREGS+224(a0) EX sdc1 $f30, SC_FPREGS+240(a0) EX sw t1, SC_FPC_CSR(a0) - cfc1 t0, $0 # implementation/version - EX sw t0, SC_FPC_EIR(a0) - jr ra li v0, 0 # success END(_save_fp_context) diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 6fa1112512c8..c389dbaa279e 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -620,7 +620,7 @@ einval: li v0, -EINVAL sys sys_ni_syscall 0 /* sys_vserver */ sys sys_waitid 5 sys sys_ni_syscall 0 /* available, was setaltroot */ - sys sys_add_key 5 + sys sys_add_key 5 /* 4280 */ sys sys_request_key 4 sys sys_keyctl 5 sys sys_set_thread_area 1 diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 6fc51b298304..9253dccefd07 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -549,3 +549,12 @@ int __init fpu_disable(char *s) } __setup("nofpu", fpu_disable); + +int __init dsp_disable(char *s) +{ + cpu_data[0].ases &= ~MIPS_ASE_DSP; + + return 1; +} + +__setup("nodsp", dsp_disable); 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]); \ diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index eb127230cc9a..8504febf8b22 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -21,6 +21,7 @@ #include #include +#include #include #include #include @@ -36,7 +37,7 @@ #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) -static int do_signal(sigset_t *oldset, struct pt_regs *regs); +int do_signal(sigset_t *oldset, struct pt_regs *regs); /* * Atomically swap in the new signal mask, and wait for a signal. @@ -216,7 +217,7 @@ _sys_sigreturn(nabi_no_regargs struct pt_regs regs) badframe: force_sig(SIGSEGV, current); } -#endif +#endif /* CONFIG_TRAD_SIGNALS */ save_static_function(sys_rt_sigreturn); __attribute_used__ noinline static void @@ -262,7 +263,7 @@ badframe: } #ifdef CONFIG_TRAD_SIGNALS -static void inline setup_frame(struct k_sigaction * ka, struct pt_regs *regs, +void setup_frame(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set) { struct sigframe *frame; @@ -318,7 +319,7 @@ give_sigsegv: } #endif -static void inline setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs, +void setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info) { struct rt_sigframe *frame; @@ -410,22 +411,10 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info, regs->regs[0] = 0; /* Don't deal with this again. */ -#ifdef CONFIG_TRAD_SIGNALS - if (ka->sa.sa_flags & SA_SIGINFO) { -#else - if (1) { -#endif -#ifdef CONFIG_MIPS32_N32 - if ((current->thread.mflags & MF_ABI_MASK) == MF_N32) - setup_rt_frame_n32 (ka, regs, sig, oldset, info); - else -#endif - setup_rt_frame(ka, regs, sig, oldset, info); - } -#ifdef CONFIG_TRAD_SIGNALS + if (sig_uses_siginfo(ka)) + current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info); else - setup_frame(ka, regs, sig, oldset); -#endif + current->thread.abi->setup_frame(ka, regs, sig, oldset); spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); @@ -435,21 +424,12 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info, spin_unlock_irq(¤t->sighand->siglock); } -extern int do_signal32(sigset_t *oldset, struct pt_regs *regs); -extern int do_irix_signal(sigset_t *oldset, struct pt_regs *regs); - -static int do_signal(sigset_t *oldset, struct pt_regs *regs) +int do_signal(sigset_t *oldset, struct pt_regs *regs) { struct k_sigaction ka; siginfo_t info; int signr; -#ifdef CONFIG_BINFMT_ELF32 - if ((current->thread.mflags & MF_ABI_MASK) == MF_O32) { - return do_signal32(oldset, regs); - } -#endif - /* * We want the common case to go fast, which is why we may in certain * cases get here from kernel mode. Just return without doing anything @@ -501,18 +481,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, sigset_t *oldset, { /* deal with pending signal delivery */ if (thread_info_flags & _TIF_SIGPENDING) { -#ifdef CONFIG_BINFMT_ELF32 - if (likely((current->thread.mflags & MF_ABI_MASK) == MF_O32)) { - do_signal32(oldset, regs); - return; - } -#endif -#ifdef CONFIG_BINFMT_IRIX - if (unlikely(current->personality != PER_LINUX)) { - do_irix_signal(oldset, regs); - return; - } -#endif - do_signal(oldset, regs); + current->thread.abi->do_signal(oldset, regs); } } diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index 5e7d0fa02672..8639e24732a5 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -21,6 +21,7 @@ #include #include +#include #include #include #include @@ -334,8 +335,9 @@ asmlinkage int sys32_sigaltstack(nabi_no_regargs struct pt_regs regs) static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 *sc) { + u32 used_math; int err = 0; - __u32 used_math; + s32 treg; /* Always make any pending restarted system calls return -EINTR */ current_thread_info()->restart_block.fn = do_no_restart_syscall; @@ -343,6 +345,15 @@ static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 *sc) err |= __get_user(regs->cp0_epc, &sc->sc_pc); 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); + } #define restore_gp_reg(i) do { \ err |= __get_user(regs->regs[i], &sc->sc_regs[i]); \ @@ -562,8 +573,15 @@ static inline int setup_sigcontext32(struct pt_regs *regs, 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(rddsp(DSP_MASK), &sc->sc_hi1); + 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(!!used_math(), &sc->sc_used_math); @@ -613,7 +631,7 @@ static inline void *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, return (void *)((sp - frame_size) & ALMASK); } -static inline void setup_frame(struct k_sigaction * ka, struct pt_regs *regs, +void setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set) { struct sigframe *frame; @@ -666,9 +684,7 @@ give_sigsegv: force_sigsegv(signr, current); } -static inline void setup_rt_frame(struct k_sigaction * ka, - struct pt_regs *regs, int signr, - sigset_t *set, siginfo_t *info) +void setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info) { struct rt_sigframe32 *frame; int err = 0; @@ -759,9 +775,9 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info, regs->regs[0] = 0; /* Don't deal with this again. */ if (ka->sa.sa_flags & SA_SIGINFO) - setup_rt_frame(ka, regs, sig, oldset, info); + current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info); else - setup_frame(ka, regs, sig, oldset); + current->thread.abi->setup_frame(ka, regs, sig, oldset); spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index b3ecd02757cb..9419a3542c24 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -54,6 +55,7 @@ extern asmlinkage void handle_tr(void); extern asmlinkage void handle_fpe(void); extern asmlinkage void handle_mdmx(void); extern asmlinkage void handle_watch(void); +extern asmlinkage void handle_dsp(void); extern asmlinkage void handle_mcheck(void); extern asmlinkage void handle_reserved(void); @@ -775,6 +777,14 @@ asmlinkage void do_mcheck(struct pt_regs *regs) (regs->cp0_status & ST0_TS) ? "" : "not "); } +asmlinkage void do_dsp(struct pt_regs *regs) +{ + if (cpu_has_dsp) + panic("Unexpected DSP exception\n"); + + force_sig(SIGILL, current); +} + asmlinkage void do_reserved(struct pt_regs *regs) { /* @@ -984,9 +994,12 @@ void __init per_cpu_trap_init(void) #endif if (current_cpu_data.isa_level == MIPS_CPU_ISA_IV) status_set |= ST0_XX; - change_c0_status(ST0_CU|ST0_FR|ST0_BEV|ST0_TS|ST0_KX|ST0_SX|ST0_UX, + change_c0_status(ST0_CU|ST0_MX|ST0_FR|ST0_BEV|ST0_TS|ST0_KX|ST0_SX|ST0_UX, status_set); + if (cpu_has_dsp) + set_c0_status(ST0_MX); + /* * Some MIPS CPUs have a dedicated interrupt vector which reduces the * interrupt processing overhead. Use it where available. @@ -1078,21 +1091,6 @@ void __init trap_init(void) set_except_vector(11, handle_cpu); set_except_vector(12, handle_ov); set_except_vector(13, handle_tr); - set_except_vector(22, handle_mdmx); - - if (cpu_has_fpu && !cpu_has_nofpuex) - set_except_vector(15, handle_fpe); - - if (cpu_has_mcheck) - set_except_vector(24, handle_mcheck); - - if (cpu_has_vce) - /* Special exception: R4[04]00 uses also the divec space. */ - memcpy((void *)(CAC_BASE + 0x180), &except_vec3_r4000, 0x100); - else if (cpu_has_4kex) - memcpy((void *)(CAC_BASE + 0x180), &except_vec3_generic, 0x80); - else - memcpy((void *)(CAC_BASE + 0x080), &except_vec3_generic, 0x80); if (current_cpu_data.cputype == CPU_R6000 || current_cpu_data.cputype == CPU_R6000A) { @@ -1108,6 +1106,25 @@ void __init trap_init(void) //set_except_vector(15, handle_ndc); } + if (cpu_has_fpu && !cpu_has_nofpuex) + set_except_vector(15, handle_fpe); + + set_except_vector(22, handle_mdmx); + + if (cpu_has_mcheck) + set_except_vector(24, handle_mcheck); + + if (cpu_has_dsp) + set_except_vector(26, handle_dsp); + + if (cpu_has_vce) + /* Special exception: R4[04]00 uses also the divec space. */ + memcpy((void *)(CAC_BASE + 0x180), &except_vec3_r4000, 0x100); + else if (cpu_has_4kex) + memcpy((void *)(CAC_BASE + 0x180), &except_vec3_generic, 0x80); + else + memcpy((void *)(CAC_BASE + 0x080), &except_vec3_generic, 0x80); + signal_init(); #ifdef CONFIG_MIPS32_COMPAT signal32_init(); -- cgit