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Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

Browse source 
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] signal: do not inline handle_signal()
  [MIPS] signal: do not use save_static_function() anymore
  [MIPS] signal32: no need to save c0_status register in setup_sigcontext32()
  [MIPS] signal32: reduce {setup,restore}_sigcontext32 sizes
  [MIPS] signal: factorize debug code
  [MIPS] signal: test return value of install_sigtramp()
  [MIPS] signal32: remove duplicate code
  [MIPS] signal: clean up sigframe structure
  [MIPS] signal: do not inline functions in signal-common.h
  [MIPS] signals: reduce {setup,restore}_sigcontext sizes
  [MIPS] Fix warning in get_user when fetching pointer object from userspace.
  [MIPS] Fix eth2 platform device id for jaguar_atx and ocelot_3 platforms
  [MIPS] JMR3927 and RBTX49x7 support little endian
  [MIPS] RBTX49x7: declare prom_getcmdline()
  [MIPS] RTLX: Sprinkle device model code into code to make udev happier.
  [MIPS] VPE: Sprinkle device model code into code to make udev happier.
This commit is contained in:
Linus Torvalds 2007-02-11 11:40:04 -08:00
commit 574009c1a8
15 changed files with 435 additions and 451 deletions
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2
arch/mips/Kconfig
View file

@ -757,6 +757,7 @@ config TOSHIBA_JMR3927
select SWAP_IO_SPACE
select SYS_HAS_CPU_TX39XX
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_BIG_ENDIAN
select TOSHIBA_BOARDS
@ -771,6 +772,7 @@ config TOSHIBA_RBTX4927
select SYS_HAS_CPU_TX49XX
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_BIG_ENDIAN
select TOSHIBA_BOARDS
select GENERIC_HARDIRQS_NO__DO_IRQ

1
arch/mips/kernel/asm-offsets.c
View file

@ -249,7 +249,6 @@ void output_sc_defines(void)
offset("#define SC_MDHI ", struct sigcontext, sc_mdhi);
offset("#define SC_MDLO ", struct sigcontext, sc_mdlo);
offset("#define SC_PC ", struct sigcontext, sc_pc);
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_HI1 ", struct sigcontext, sc_hi1);

19
arch/mips/kernel/mips-mt.c
View file

@ -3,9 +3,11 @@
* Copyright (C) 2005 Mips Technologies, Inc
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/cpumask.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/security.h>
@ -453,3 +455,20 @@ void mt_cflush_release(void)
#endif /* CONFIG_MIPS_MT_SMTC */
/* FILL IN VSMP and AP/SP VERSIONS HERE */
}
struct class *mt_class;
static int __init mt_init(void)
{
struct class *mtc;
mtc = class_create(THIS_MODULE, "mt");
if (IS_ERR(mtc))
return PTR_ERR(mtc);
mt_class = mtc;
return 0;
}
subsys_initcall(mt_init);

23
arch/mips/kernel/rtlx.c
View file

@ -17,6 +17,7 @@
*
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/fs.h>
@ -34,6 +35,7 @@
#include <linux/sched.h>
#include <linux/wait.h>
#include <asm/mipsmtregs.h>
#include <asm/mips_mt.h>
#include <asm/cacheflush.h>
#include <asm/atomic.h>
#include <asm/cpu.h>
@ -498,7 +500,8 @@ static char register_chrdev_failed[] __initdata =
static int rtlx_module_init(void)
{
int i;
struct device *dev;
int i, err;
major = register_chrdev(0, module_name, &rtlx_fops);
if (major < 0) {
@ -511,6 +514,13 @@ static int rtlx_module_init(void)
init_waitqueue_head(&channel_wqs[i].rt_queue);
init_waitqueue_head(&channel_wqs[i].lx_queue);
channel_wqs[i].in_open = 0;
dev = device_create(mt_class, NULL, MKDEV(major, i),
"%s%d", module_name, i);
if (IS_ERR(dev)) {
err = PTR_ERR(dev);
goto out_chrdev;
}
}
/* set up notifiers */
@ -525,10 +535,21 @@ static int rtlx_module_init(void)
setup_irq(rtlx_irq_num, &rtlx_irq);
return 0;
out_chrdev:
for (i = 0; i < RTLX_CHANNELS; i++)
device_destroy(mt_class, MKDEV(major, i));
return err;
}
static void __exit rtlx_module_exit(void)
{
int i;
for (i = 0; i < RTLX_CHANNELS; i++)
device_destroy(mt_class, MKDEV(major, i));
unregister_chrdev(major, module_name);
}

194
arch/mips/kernel/signal-common.h
View file

@ -8,169 +8,57 @@
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*/
#ifndef __SIGNAL_COMMON_H
#define __SIGNAL_COMMON_H
static inline int
setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
{
int err = 0;
/* #define DEBUG_SIG */
err |= __put_user(regs->cp0_epc, &sc->sc_pc);
#ifdef DEBUG_SIG
# define DEBUGP(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ##args)
#else
# define DEBUGP(fmt, args...)
#endif
#define save_gp_reg(i) do { \
err |= __put_user(regs->regs[i], &sc->sc_regs[i]); \
} while(0)
__put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2);
save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6);
save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10);
save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18);
save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22);
save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30);
save_gp_reg(31);
#undef save_gp_reg
/*
* Horribly complicated - with the bloody RM9000 workarounds enabled
* the signal trampolines is moving to the end of the structure so we can
* increase the alignment without breaking software compatibility.
*/
#if ICACHE_REFILLS_WORKAROUND_WAR == 0
err |= __put_user(regs->hi, &sc->sc_mdhi);
err |= __put_user(regs->lo, &sc->sc_mdlo);
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);
}
struct sigframe {
u32 sf_ass[4]; /* argument save space for o32 */
u32 sf_code[2]; /* signal trampoline */
struct sigcontext sf_sc;
sigset_t sf_mask;
};
err |= __put_user(!!used_math(), &sc->sc_used_math);
#else /* ICACHE_REFILLS_WORKAROUND_WAR */
if (!used_math())
goto out;
struct sigframe {
u32 sf_ass[4]; /* argument save space for o32 */
u32 sf_pad[2];
struct sigcontext sf_sc; /* hw context */
sigset_t sf_mask;
u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */
};
/*
* Save FPU state to signal context. Signal handler will "inherit"
* current FPU state.
*/
preempt_disable();
#endif /* !ICACHE_REFILLS_WORKAROUND_WAR */
if (!is_fpu_owner()) {
own_fpu();
restore_fp(current);
}
err |= save_fp_context(sc);
preempt_enable();
out:
return err;
}
static inline int
restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
{
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);
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]); \
} while(0)
restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3);
restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6);
restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9);
restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12);
restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15);
restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18);
restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21);
restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24);
restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27);
restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30);
restore_gp_reg(31);
#undef restore_gp_reg
err |= __get_user(used_math, &sc->sc_used_math);
conditional_used_math(used_math);
preempt_disable();
if (used_math()) {
/* restore fpu context if we have used it before */
own_fpu();
err |= restore_fp_context(sc);
} else {
/* signal handler may have used FPU. Give it up. */
lose_fpu();
}
preempt_enable();
return err;
}
/*
* handle hardware context
*/
extern int setup_sigcontext(struct pt_regs *, struct sigcontext __user *);
extern int restore_sigcontext(struct pt_regs *, struct sigcontext __user *);
/*
* Determine which stack to use..
*/
static inline void __user *
get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
{
unsigned long sp;
extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
size_t frame_size);
/*
* install trampoline code to get back from the sig handler
*/
extern int install_sigtramp(unsigned int __user *tramp, unsigned int syscall);
/* Default to using normal stack */
sp = regs->regs[29];
/*
* FPU emulator may have it's own trampoline active just
* above the user stack, 16-bytes before the next lowest
* 16 byte boundary. Try to avoid trashing it.
*/
sp -= 32;
/* This is the X/Open sanctioned signal stack switching. */
if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags (sp) == 0))
sp = current->sas_ss_sp + current->sas_ss_size;
return (void __user *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? ~(cpu_icache_line_size()-1) : ALMASK));
}
static inline int install_sigtramp(unsigned int __user *tramp,
unsigned int syscall)
{
int err;
/*
* 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;
}
#endif /* __SIGNAL_COMMON_H */

230
arch/mips/kernel/signal.c
View file

@ -34,18 +34,174 @@
#include "signal-common.h"
#define DEBUG_SIG 0
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
#if ICACHE_REFILLS_WORKAROUND_WAR == 0
struct rt_sigframe {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_code[2]; /* signal trampoline */
struct siginfo rs_info;
struct ucontext rs_uc;
};
#else
struct rt_sigframe {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_pad[2];
struct siginfo rs_info;
struct ucontext rs_uc;
u32 rs_code[8] ____cacheline_aligned; /* signal trampoline */
};
#endif
/*
* Helper routines
*/
int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
{
int err = 0;
int i;
err |= __put_user(regs->cp0_epc, &sc->sc_pc);
err |= __put_user(0, &sc->sc_regs[0]);
for (i = 1; i < 32; i++)
err |= __put_user(regs->regs[i], &sc->sc_regs[i]);
err |= __put_user(regs->hi, &sc->sc_mdhi);
err |= __put_user(regs->lo, &sc->sc_mdlo);
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);
}
err |= __put_user(!!used_math(), &sc->sc_used_math);
if (used_math()) {
/*
* Save FPU state to signal context. Signal handler
* will "inherit" current FPU state.
*/
preempt_disable();
if (!is_fpu_owner()) {
own_fpu();
restore_fp(current);
}
err |= save_fp_context(sc);
preempt_enable();
}
return err;
}
int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
{
unsigned int used_math;
unsigned long treg;
int err = 0;
int i;
/* 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);
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);
}
for (i = 1; i < 32; i++)
err |= __get_user(regs->regs[i], &sc->sc_regs[i]);
err |= __get_user(used_math, &sc->sc_used_math);
conditional_used_math(used_math);
preempt_disable();
if (used_math()) {
/* restore fpu context if we have used it before */
own_fpu();
err |= restore_fp_context(sc);
} else {
/* signal handler may have used FPU. Give it up. */
lose_fpu();
}
preempt_enable();
return err;
}
void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
size_t frame_size)
{
unsigned long sp;
/* Default to using normal stack */
sp = regs->regs[29];
/*
* FPU emulator may have it's own trampoline active just
* above the user stack, 16-bytes before the next lowest
* 16 byte boundary. Try to avoid trashing it.
*/
sp -= 32;
/* This is the X/Open sanctioned signal stack switching. */
if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags (sp) == 0))
sp = current->sas_ss_sp + current->sas_ss_size;
return (void __user *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? ~(cpu_icache_line_size()-1) : ALMASK));
}
int install_sigtramp(unsigned int __user *tramp, unsigned int syscall)
{
int err;
/*
* 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;
}
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
#ifdef CONFIG_TRAD_SIGNALS
save_static_function(sys_sigsuspend);
__attribute_used__ noinline static int
_sys_sigsuspend(nabi_no_regargs struct pt_regs regs)
asmlinkage int sys_sigsuspend(nabi_no_regargs struct pt_regs regs)
{
sigset_t newset;
sigset_t __user *uset;
@ -68,9 +224,7 @@ _sys_sigsuspend(nabi_no_regargs struct pt_regs regs)
}
#endif
save_static_function(sys_rt_sigsuspend);
__attribute_used__ noinline static int
_sys_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
asmlinkage int sys_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
{
sigset_t newset;
sigset_t __user *unewset;
@ -148,45 +302,8 @@ asmlinkage int sys_sigaltstack(nabi_no_regargs struct pt_regs regs)
return do_sigaltstack(uss, uoss, usp);
}
/*
* Horribly complicated - with the bloody RM9000 workarounds enabled
* the signal trampolines is moving to the end of the structure so we can
* increase the alignment without breaking software compatibility.
*/
#ifdef CONFIG_TRAD_SIGNALS
struct sigframe {
u32 sf_ass[4]; /* argument save space for o32 */
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 sf_pad[2];
#else
u32 sf_code[2]; /* signal trampoline */
#endif
struct sigcontext sf_sc;
sigset_t sf_mask;
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */
#endif
};
#endif
struct rt_sigframe {
u32 rs_ass[4]; /* argument save space for o32 */
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 rs_pad[2];
#else
u32 rs_code[2]; /* signal trampoline */
#endif
struct siginfo rs_info;
struct ucontext rs_uc;
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 rs_code[8] ____cacheline_aligned; /* signal trampoline */
#endif
};
#ifdef CONFIG_TRAD_SIGNALS
save_static_function(sys_sigreturn);
__attribute_used__ noinline static void
_sys_sigreturn(nabi_no_regargs struct pt_regs regs)
asmlinkage void sys_sigreturn(nabi_no_regargs struct pt_regs regs)
{
struct sigframe __user *frame;
sigset_t blocked;
@ -221,9 +338,7 @@ _sys_sigreturn(nabi_no_regargs struct pt_regs regs)
}
#endif /* CONFIG_TRAD_SIGNALS */
save_static_function(sys_rt_sigreturn);
__attribute_used__ noinline static void
_sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
{
struct rt_sigframe __user *frame;
sigset_t set;
@ -275,7 +390,7 @@ int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
goto give_sigsegv;
install_sigtramp(frame->sf_code, __NR_sigreturn);
err |= install_sigtramp(frame->sf_code, __NR_sigreturn);
err |= setup_sigcontext(regs, &frame->sf_sc);
err |= __copy_to_user(&frame->sf_mask, set, sizeof(*set));
@ -299,11 +414,9 @@ int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
regs->regs[31] = (unsigned long) frame->sf_code;
regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
#if DEBUG_SIG
printk("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%p\n",
DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
current->comm, current->pid,
frame, regs->cp0_epc, frame->regs[31]);
#endif
frame, regs->cp0_epc, regs->regs[31]);
return 0;
give_sigsegv:
@ -322,7 +435,7 @@ int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
goto give_sigsegv;
install_sigtramp(frame->rs_code, __NR_rt_sigreturn);
err |= install_sigtramp(frame->rs_code, __NR_rt_sigreturn);
/* Create siginfo. */
err |= copy_siginfo_to_user(&frame->rs_info, info);
@ -359,11 +472,10 @@ int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
regs->regs[31] = (unsigned long) frame->rs_code;
regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
#if DEBUG_SIG
printk("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%p\n",
DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
current->comm, current->pid,
frame, regs->cp0_epc, regs->regs[31]);
#endif
return 0;
give_sigsegv:
@ -371,7 +483,7 @@ int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
return -EFAULT;
}
static inline int handle_signal(unsigned long sig, siginfo_t *info,
static int handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs)
{
int ret;

341
arch/mips/kernel/signal32.c
View file

@ -33,6 +33,8 @@
#include <asm/fpu.h>
#include <asm/war.h>
#include "signal-common.h"
#define SI_PAD_SIZE32 ((SI_MAX_SIZE/sizeof(int)) - 3)
typedef struct compat_siginfo {
@ -102,8 +104,6 @@ typedef struct compat_siginfo {
#define __NR_O32_rt_sigreturn 4193
#define __NR_O32_restart_syscall 4253
#define DEBUG_SIG 0
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
/* 32-bit compatibility types */
@ -139,6 +139,123 @@ struct ucontext32 {
sigset_t32 uc_sigmask; /* mask last for extensibility */
};
#if ICACHE_REFILLS_WORKAROUND_WAR == 0
struct rt_sigframe32 {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_code[2]; /* signal trampoline */
compat_siginfo_t rs_info;
struct ucontext32 rs_uc;
};
#else /* ICACHE_REFILLS_WORKAROUND_WAR */
struct rt_sigframe32 {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_pad[2];
compat_siginfo_t rs_info;
struct ucontext32 rs_uc;
u32 rs_code[8] __attribute__((aligned(32))); /* signal trampoline */
};
#endif /* !ICACHE_REFILLS_WORKAROUND_WAR */
/*
* sigcontext handlers
*/
static int setup_sigcontext32(struct pt_regs *regs,
struct sigcontext32 __user *sc)
{
int err = 0;
int i;
err |= __put_user(regs->cp0_epc, &sc->sc_pc);
err |= __put_user(0, &sc->sc_regs[0]);
for (i = 1; i < 32; i++)
err |= __put_user(regs->regs[i], &sc->sc_regs[i]);
err |= __put_user(regs->hi, &sc->sc_mdhi);
err |= __put_user(regs->lo, &sc->sc_mdlo);
if (cpu_has_dsp) {
err |= __put_user(rddsp(DSP_MASK), &sc->sc_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(!!used_math(), &sc->sc_used_math);
if (used_math()) {
/*
* Save FPU state to signal context. Signal handler
* will "inherit" current FPU state.
*/
preempt_disable();
if (!is_fpu_owner()) {
own_fpu();
restore_fp(current);
}
err |= save_fp_context32(sc);
preempt_enable();
}
return err;
}
static int restore_sigcontext32(struct pt_regs *regs,
struct sigcontext32 __user *sc)
{
u32 used_math;
int err = 0;
s32 treg;
int i;
/* 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);
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);
}
for (i = 1; i < 32; i++)
err |= __get_user(regs->regs[i], &sc->sc_regs[i]);
err |= __get_user(used_math, &sc->sc_used_math);
conditional_used_math(used_math);
preempt_disable();
if (used_math()) {
/* restore fpu context if we have used it before */
own_fpu();
err |= restore_fp_context32(sc);
} else {
/* signal handler may have used FPU. Give it up. */
lose_fpu();
}
preempt_enable();
return err;
}
/*
*
*/
extern void __put_sigset_unknown_nsig(void);
extern void __get_sigset_unknown_nsig(void);
@ -191,9 +308,7 @@ static inline int get_sigset(sigset_t *kbuf, const compat_sigset_t __user *ubuf)
* Atomically swap in the new signal mask, and wait for a signal.
*/
save_static_function(sys32_sigsuspend);
__attribute_used__ noinline static int
_sys32_sigsuspend(nabi_no_regargs struct pt_regs regs)
asmlinkage int sys32_sigsuspend(nabi_no_regargs struct pt_regs regs)
{
compat_sigset_t __user *uset;
sigset_t newset;
@ -215,9 +330,7 @@ _sys32_sigsuspend(nabi_no_regargs struct pt_regs regs)
return -ERESTARTNOHAND;
}
save_static_function(sys32_rt_sigsuspend);
__attribute_used__ noinline static int
_sys32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
asmlinkage int sys32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
{
compat_sigset_t __user *uset;
sigset_t newset;
@ -326,91 +439,6 @@ asmlinkage int sys32_sigaltstack(nabi_no_regargs struct pt_regs regs)
return ret;
}
static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 __user *sc)
{
u32 used_math;
int err = 0;
s32 treg;
/* 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);
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]); \
} while(0)
restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3);
restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6);
restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9);
restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12);
restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15);
restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18);
restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21);
restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24);
restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27);
restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30);
restore_gp_reg(31);
#undef restore_gp_reg
err |= __get_user(used_math, &sc->sc_used_math);
conditional_used_math(used_math);
preempt_disable();
if (used_math()) {
/* restore fpu context if we have used it before */
own_fpu();
err |= restore_fp_context32(sc);
} else {
/* signal handler may have used FPU. Give it up. */
lose_fpu();
}
preempt_enable();
return err;
}
struct sigframe {
u32 sf_ass[4]; /* argument save space for o32 */
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 sf_pad[2];
#else
u32 sf_code[2]; /* signal trampoline */
#endif
struct sigcontext32 sf_sc;
sigset_t sf_mask;
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */
#endif
};
struct rt_sigframe32 {
u32 rs_ass[4]; /* argument save space for o32 */
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 rs_pad[2];
#else
u32 rs_code[2]; /* signal trampoline */
#endif
compat_siginfo_t rs_info;
struct ucontext32 rs_uc;
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 rs_code[8] __attribute__((aligned(32))); /* signal trampoline */
#endif
};
int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
{
int err;
@ -463,9 +491,7 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
return err;
}
save_static_function(sys32_sigreturn);
__attribute_used__ noinline static void
_sys32_sigreturn(nabi_no_regargs struct pt_regs regs)
asmlinkage void sys32_sigreturn(nabi_no_regargs struct pt_regs regs)
{
struct sigframe __user *frame;
sigset_t blocked;
@ -499,9 +525,7 @@ _sys32_sigreturn(nabi_no_regargs struct pt_regs regs)
force_sig(SIGSEGV, current);
}
save_static_function(sys32_rt_sigreturn);
__attribute_used__ noinline static void
_sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
asmlinkage void sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
{
struct rt_sigframe32 __user *frame;
mm_segment_t old_fs;
@ -554,89 +578,6 @@ _sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
force_sig(SIGSEGV, current);
}
static inline int setup_sigcontext32(struct pt_regs *regs,
struct sigcontext32 __user *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) { \
err |= __put_user(regs->regs[i], &sc->sc_regs[i]); \
} while(0)
__put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2);
save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6);
save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10);
save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18);
save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22);
save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30);
save_gp_reg(31);
#undef save_gp_reg
err |= __put_user(regs->hi, &sc->sc_mdhi);
err |= __put_user(regs->lo, &sc->sc_mdlo);
if (cpu_has_dsp) {
err |= __put_user(rddsp(DSP_MASK), &sc->sc_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(!!used_math(), &sc->sc_used_math);
if (!used_math())
goto out;
/*
* Save FPU state to signal context. Signal handler will "inherit"
* current FPU state.
*/
preempt_disable();
if (!is_fpu_owner()) {
own_fpu();
restore_fp(current);
}
err |= save_fp_context32(sc);
preempt_enable();
out:
return err;
}
/*
* Determine which stack to use..
*/
static inline void __user *get_sigframe(struct k_sigaction *ka,
struct pt_regs *regs,
size_t frame_size)
{
unsigned long sp;
/* Default to using normal stack */
sp = regs->regs[29];
/*
* FPU emulator may have it's own trampoline active just
* above the user stack, 16-bytes before the next lowest
* 16 byte boundary. Try to avoid trashing it.
*/
sp -= 32;
/* This is the X/Open sanctioned signal stack switching. */
if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags (sp) == 0))
sp = current->sas_ss_sp + current->sas_ss_size;
return (void __user *)((sp - frame_size) & ALMASK);
}
int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
int signr, sigset_t *set)
{
@ -647,15 +588,7 @@ int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
goto give_sigsegv;
/*
* Set up the return code ...
*
* li v0, __NR_O32_sigreturn
* syscall
*/
err |= __put_user(0x24020000 + __NR_O32_sigreturn, frame->sf_code + 0);
err |= __put_user(0x0000000c , frame->sf_code + 1);
flush_cache_sigtramp((unsigned long) frame->sf_code);
err |= install_sigtramp(frame->sf_code, __NR_O32_sigreturn);
err |= setup_sigcontext32(regs, &frame->sf_sc);
err |= __copy_to_user(&frame->sf_mask, set, sizeof(*set));
@ -679,11 +612,10 @@ int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
regs->regs[31] = (unsigned long) frame->sf_code;
regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
#if DEBUG_SIG
printk("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%p\n",
DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
current->comm, current->pid,
frame, regs->cp0_epc, frame->sf_code);
#endif
frame, regs->cp0_epc, regs->regs[31]);
return 0;
give_sigsegv:
@ -702,17 +634,7 @@ int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
goto give_sigsegv;
/* Set up to return from userspace. If provided, use a stub already
in userspace. */
/*
* Set up the return code ...
*
* li v0, __NR_O32_rt_sigreturn
* syscall
*/
err |= __put_user(0x24020000 + __NR_O32_rt_sigreturn, frame->rs_code + 0);
err |= __put_user(0x0000000c , frame->rs_code + 1);
flush_cache_sigtramp((unsigned long) frame->rs_code);
err |= install_sigtramp(frame->rs_code, __NR_O32_rt_sigreturn);
/* Convert (siginfo_t -> compat_siginfo_t) and copy to user. */
err |= copy_siginfo_to_user32(&frame->rs_info, info);
@ -750,11 +672,10 @@ int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
regs->regs[31] = (unsigned long) frame->rs_code;
regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
#if DEBUG_SIG
printk("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%p\n",
DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
current->comm, current->pid,
frame, regs->cp0_epc, frame->rs_code);
#endif
frame, regs->cp0_epc, regs->regs[31]);
return 0;
give_sigsegv:

36
arch/mips/kernel/signal_n32.c
View file

@ -47,8 +47,6 @@
#define __NR_N32_rt_sigreturn 6211
#define __NR_N32_restart_syscall 6214
#define DEBUG_SIG 0
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
/* IRIX compatible stack_t */
@ -66,25 +64,30 @@ struct ucontextn32 {
sigset_t uc_sigmask; /* mask last for extensibility */
};
#if ICACHE_REFILLS_WORKAROUND_WAR == 0
struct rt_sigframe_n32 {
u32 rs_ass[4]; /* argument save space for o32 */
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 rs_pad[2];
#else
u32 rs_code[2]; /* signal trampoline */
#endif
struct siginfo rs_info;
struct ucontextn32 rs_uc;
#if ICACHE_REFILLS_WORKAROUND_WAR
u32 rs_code[8] ____cacheline_aligned; /* signal trampoline */
#endif
};
#else /* ICACHE_REFILLS_WORKAROUND_WAR */
struct rt_sigframe_n32 {
u32 rs_ass[4]; /* argument save space for o32 */
u32 rs_pad[2];
struct siginfo rs_info;
struct ucontextn32 rs_uc;
u32 rs_code[8] ____cacheline_aligned; /* signal trampoline */
};
#endif /* !ICACHE_REFILLS_WORKAROUND_WAR */
extern void sigset_from_compat (sigset_t *set, compat_sigset_t *compat);
save_static_function(sysn32_rt_sigsuspend);
__attribute_used__ noinline static int
_sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
asmlinkage int sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
{
compat_sigset_t __user *unewset;
compat_sigset_t uset;
@ -114,9 +117,7 @@ _sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
return -ERESTARTNOHAND;
}
save_static_function(sysn32_rt_sigreturn);
__attribute_used__ noinline static void
_sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
{
struct rt_sigframe_n32 __user *frame;
sigset_t set;
@ -214,11 +215,10 @@ int setup_rt_frame_n32(struct k_sigaction * ka,
regs->regs[31] = (unsigned long) frame->rs_code;
regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
#if DEBUG_SIG
printk("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%p\n",
DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
current->comm, current->pid,
frame, regs->cp0_epc, regs->regs[31]);
#endif
return 0;
give_sigsegv:

22
arch/mips/kernel/vpe.c
View file

@ -29,6 +29,7 @@
*/
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/init.h>
@ -48,6 +49,7 @@
#include <asm/cacheflush.h>
#include <asm/atomic.h>
#include <asm/cpu.h>
#include <asm/mips_mt.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/vpe.h>
@ -64,6 +66,7 @@ typedef void *vpe_handle;
static char module_name[] = "vpe";
static int major;
static const int minor = 1; /* fixed for now */
#ifdef CONFIG_MIPS_APSP_KSPD
static struct kspd_notifications kspd_events;
@ -1365,12 +1368,15 @@ static void kspd_sp_exit( int sp_id)
}
#endif
static struct device *vpe_dev;
static int __init vpe_module_init(void)
{
struct vpe *v = NULL;
struct device *dev;
struct tc *t;
unsigned long val;
int i;
int i, err;
if (!cpu_has_mipsmt) {
printk("VPE loader: not a MIPS MT capable processor\n");
@ -1383,6 +1389,14 @@ static int __init vpe_module_init(void)
return major;
}
dev = device_create(mt_class, NULL, MKDEV(major, minor),
"tc%d", minor);
if (IS_ERR(dev)) {
err = PTR_ERR(dev);
goto out_chrdev;
}
vpe_dev = dev;
dmt();
dvpe();
@ -1478,6 +1492,11 @@ static int __init vpe_module_init(void)
kspd_events.kspd_sp_exit = kspd_sp_exit;
#endif
return 0;
out_chrdev:
unregister_chrdev(major, module_name);
return err;
}
static void __exit vpe_module_exit(void)
@ -1490,6 +1509,7 @@ static void __exit vpe_module_exit(void)
}
}
device_destroy(mt_class, MKDEV(major, minor));
unregister_chrdev(major, module_name);
}

2
arch/mips/momentum/jaguar_atx/platform.c
View file

@ -129,7 +129,7 @@ static struct mv643xx_eth_platform_data eth2_pd = {
static struct platform_device eth2_device = {
.name = MV643XX_ETH_NAME,
.id = 1,
.id = 2,
.num_resources = ARRAY_SIZE(mv64x60_eth2_resources),
.resource = mv64x60_eth2_resources,
.dev = {

2
arch/mips/momentum/ocelot_3/platform.c
View file

@ -129,7 +129,7 @@ static struct mv643xx_eth_platform_data eth2_pd = {
static struct platform_device eth2_device = {
.name = MV643XX_ETH_NAME,
.id = 1,
.id = 2,
.num_resources = ARRAY_SIZE(mv64x60_eth2_resources),
.resource = mv64x60_eth2_resources,
.dev = {

2
arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c
View file

@ -137,6 +137,8 @@ int tx4927_using_backplane = 0;
extern void gt64120_time_init(void);
extern void toshiba_rbtx4927_irq_setup(void);
char *prom_getcmdline(void);
#ifdef CONFIG_PCI
#define CONFIG_TX4927BUG_WORKAROUND
#undef TX4927_SUPPORT_COMMAND_IO

3
include/asm-mips/mips_mt.h
View file

@ -12,4 +12,7 @@ extern unsigned long mt_fpemul_threshold;
extern void mips_mt_regdump(unsigned long previous_mvpcontrol_value);
extern void mips_mt_set_cpuoptions(void);
struct class;
extern struct class *mt_class;
#endif /* __ASM_MIPS_MT_H */

4
include/asm-mips/sigcontext.h
View file

@ -19,7 +19,7 @@
*/
struct sigcontext {
unsigned int sc_regmask; /* Unused */
unsigned int sc_status;
unsigned int sc_status; /* Unused */
unsigned long long sc_pc;
unsigned long long sc_regs[32];
unsigned long long sc_fpregs[32];
@ -76,7 +76,7 @@ struct sigcontext {
struct sigcontext32 {
__u32 sc_regmask; /* Unused */
__u32 sc_status;
__u32 sc_status; /* Unused */
__u64 sc_pc;
__u64 sc_regs[32];
__u64 sc_fpregs[32];

5
include/asm-mips/uaccess.h
View file

@ -265,8 +265,6 @@ do { \
*/
#define __get_user_asm_ll32(val, addr) \
{ \
unsigned long long __gu_tmp; \
\
__asm__ __volatile__( \
"1: lw %1, (%3) \n" \
"2: lw %D1, 4(%3) \n" \
@ -281,9 +279,8 @@ do { \
" " __UA_ADDR " 1b, 4b \n" \
" " __UA_ADDR " 2b, 4b \n" \
" .previous \n" \
: "=r" (__gu_err), "=&r" (__gu_tmp) \
: "=r" (__gu_err), "=&r" (val) \
: "0" (0), "r" (addr), "i" (-EFAULT)); \
(val) = (__typeof__(*(addr))) __gu_tmp; \
}
/*