select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_UBSAN_SANITIZE_ALL
- select ARCH_HAS_STRNLEN_USER
select ARCH_NO_SG_CHAIN
select ARCH_SUPPORTS_HUGETLBFS if PA20
select ARCH_SUPPORTS_MEMORY_FAILURE
select HAVE_KPROBES_ON_FTRACE
select HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
- select SET_FS
select TRACE_IRQFLAGS_SUPPORT
help
OBJECTS += $(obj)/head.o $(obj)/real2.o $(obj)/firmware.o $(obj)/misc.o $(obj)/piggy.o
LDFLAGS_vmlinux := -X -e startup --as-needed -T
-$(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS) $(LIBGCC)
+$(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS) $(LIBGCC) FORCE
$(call if_changed,ld)
sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\|parisc_kernel_start\)$$/\#define SZ\2 0x\1/p'
quiet_cmd_sizes = GEN $@
cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@
-$(obj)/sizes.h: vmlinux
+$(obj)/sizes.h: vmlinux FORCE
$(call if_changed,sizes)
AFLAGS_head.o += -I$(objtree)/$(obj) -DBOOTLOADER
suffix-$(CONFIG_KERNEL_LZO) := lzo
suffix-$(CONFIG_KERNEL_XZ) := xz
-$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
+$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
$(call if_changed,gzip)
-$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y)
+$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
$(call if_changed,bzip2)
-$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y)
+$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
$(call if_changed,lz4)
-$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
+$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
$(call if_changed,lzma)
-$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
+$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
$(call if_changed,lzo)
-$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y)
+$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
$(call if_changed,xzkern)
LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
-$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y) FORCE
$(call if_changed,ld)
#define CPU_HVERSION ((boot_cpu_data.hversion >> 4) & 0x0FFF)
-typedef struct {
- int seg;
-} mm_segment_t;
-
#define ARCH_MIN_TASKALIGN 8
struct thread_struct {
#ifndef _ASM_PARISC_RT_SIGFRAME_H
#define _ASM_PARISC_RT_SIGFRAME_H
-#define SIGRETURN_TRAMP 4
+#define SIGRETURN_TRAMP 3
#define SIGRESTARTBLOCK_TRAMP 5
#define TRAMP_SIZE (SIGRETURN_TRAMP + SIGRESTARTBLOCK_TRAMP)
struct thread_info {
struct task_struct *task; /* main task structure */
unsigned long flags; /* thread_info flags (see TIF_*) */
- mm_segment_t addr_limit; /* user-level address space limit */
__u32 cpu; /* current CPU */
int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */
};
.task = &tsk, \
.flags = 0, \
.cpu = 0, \
- .addr_limit = KERNEL_DS, \
.preempt_count = INIT_PREEMPT_COUNT, \
}
#include <linux/bug.h>
#include <linux/string.h>
-#define KERNEL_DS ((mm_segment_t){0})
-#define USER_DS ((mm_segment_t){1})
-
-#define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg)
-
-#define get_fs() (current_thread_info()->addr_limit)
-#define set_fs(x) (current_thread_info()->addr_limit = (x))
-
/*
* Note that since kernel addresses are in a separate address space on
* parisc, we don't need to do anything for access_ok().
#define get_user __get_user
#if !defined(CONFIG_64BIT)
-#define LDD_USER(val, ptr) __get_user_asm64(val, ptr)
-#define STD_USER(x, ptr) __put_user_asm64(x, ptr)
+#define LDD_USER(sr, val, ptr) __get_user_asm64(sr, val, ptr)
+#define STD_USER(sr, x, ptr) __put_user_asm64(sr, x, ptr)
#else
-#define LDD_USER(val, ptr) __get_user_asm(val, "ldd", ptr)
-#define STD_USER(x, ptr) __put_user_asm("std", x, ptr)
+#define LDD_USER(sr, val, ptr) __get_user_asm(sr, val, "ldd", ptr)
+#define STD_USER(sr, x, ptr) __put_user_asm(sr, "std", x, ptr)
#endif
/*
#define ASM_EXCEPTIONTABLE_ENTRY_EFAULT( fault_addr, except_addr )\
ASM_EXCEPTIONTABLE_ENTRY( fault_addr, except_addr + 1)
-/*
- * load_sr2() preloads the space register %%sr2 - based on the value of
- * get_fs() - with either a value of 0 to access kernel space (KERNEL_DS which
- * is 0), or with the current value of %%sr3 to access user space (USER_DS)
- * memory. The following __get_user_asm() and __put_user_asm() functions have
- * %%sr2 hard-coded to access the requested memory.
- */
-#define load_sr2() \
- __asm__(" or,= %0,%%r0,%%r0\n\t" \
- " mfsp %%sr3,%0\n\t" \
- " mtsp %0,%%sr2\n\t" \
- : : "r"(get_fs()) : )
-
-#define __get_user_internal(val, ptr) \
+#define __get_user_internal(sr, val, ptr) \
({ \
register long __gu_err __asm__ ("r8") = 0; \
\
switch (sizeof(*(ptr))) { \
- case 1: __get_user_asm(val, "ldb", ptr); break; \
- case 2: __get_user_asm(val, "ldh", ptr); break; \
- case 4: __get_user_asm(val, "ldw", ptr); break; \
- case 8: LDD_USER(val, ptr); break; \
+ case 1: __get_user_asm(sr, val, "ldb", ptr); break; \
+ case 2: __get_user_asm(sr, val, "ldh", ptr); break; \
+ case 4: __get_user_asm(sr, val, "ldw", ptr); break; \
+ case 8: LDD_USER(sr, val, ptr); break; \
default: BUILD_BUG(); \
} \
\
#define __get_user(val, ptr) \
({ \
- load_sr2(); \
- __get_user_internal(val, ptr); \
+ __get_user_internal("%%sr3,", val, ptr); \
})
-#define __get_user_asm(val, ldx, ptr) \
+#define __get_user_asm(sr, val, ldx, ptr) \
{ \
register long __gu_val; \
\
- __asm__("1: " ldx " 0(%%sr2,%2),%0\n" \
+ __asm__("1: " ldx " 0(" sr "%2),%0\n" \
"9:\n" \
ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \
: "=r"(__gu_val), "=r"(__gu_err) \
(val) = (__force __typeof__(*(ptr))) __gu_val; \
}
+#define HAVE_GET_KERNEL_NOFAULT
+#define __get_kernel_nofault(dst, src, type, err_label) \
+{ \
+ type __z; \
+ long __err; \
+ __err = __get_user_internal("%%sr0,", __z, (type *)(src)); \
+ if (unlikely(__err)) \
+ goto err_label; \
+ else \
+ *(type *)(dst) = __z; \
+}
+
+
#if !defined(CONFIG_64BIT)
-#define __get_user_asm64(val, ptr) \
+#define __get_user_asm64(sr, val, ptr) \
{ \
union { \
unsigned long long l; \
} __gu_tmp; \
\
__asm__(" copy %%r0,%R0\n" \
- "1: ldw 0(%%sr2,%2),%0\n" \
- "2: ldw 4(%%sr2,%2),%R0\n" \
+ "1: ldw 0(" sr "%2),%0\n" \
+ "2: ldw 4(" sr "%2),%R0\n" \
"9:\n" \
ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \
ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b) \
#endif /* !defined(CONFIG_64BIT) */
-#define __put_user_internal(x, ptr) \
+#define __put_user_internal(sr, x, ptr) \
({ \
register long __pu_err __asm__ ("r8") = 0; \
__typeof__(*(ptr)) __x = (__typeof__(*(ptr)))(x); \
\
switch (sizeof(*(ptr))) { \
- case 1: __put_user_asm("stb", __x, ptr); break; \
- case 2: __put_user_asm("sth", __x, ptr); break; \
- case 4: __put_user_asm("stw", __x, ptr); break; \
- case 8: STD_USER(__x, ptr); break; \
+ case 1: __put_user_asm(sr, "stb", __x, ptr); break; \
+ case 2: __put_user_asm(sr, "sth", __x, ptr); break; \
+ case 4: __put_user_asm(sr, "stw", __x, ptr); break; \
+ case 8: STD_USER(sr, __x, ptr); break; \
default: BUILD_BUG(); \
} \
\
#define __put_user(x, ptr) \
({ \
- load_sr2(); \
- __put_user_internal(x, ptr); \
+ __put_user_internal("%%sr3,", x, ptr); \
})
+#define __put_kernel_nofault(dst, src, type, err_label) \
+{ \
+ type __z = *(type *)(src); \
+ long __err; \
+ __err = __put_user_internal("%%sr0,", __z, (type *)(dst)); \
+ if (unlikely(__err)) \
+ goto err_label; \
+}
+
+
+
/*
* The "__put_user/kernel_asm()" macros tell gcc they read from memory
* r8 is already listed as err.
*/
-#define __put_user_asm(stx, x, ptr) \
- __asm__ __volatile__ ( \
- "1: " stx " %2,0(%%sr2,%1)\n" \
- "9:\n" \
- ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \
- : "=r"(__pu_err) \
+#define __put_user_asm(sr, stx, x, ptr) \
+ __asm__ __volatile__ ( \
+ "1: " stx " %2,0(" sr "%1)\n" \
+ "9:\n" \
+ ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \
+ : "=r"(__pu_err) \
: "r"(ptr), "r"(x), "0"(__pu_err))
#if !defined(CONFIG_64BIT)
-#define __put_user_asm64(__val, ptr) do { \
- __asm__ __volatile__ ( \
- "1: stw %2,0(%%sr2,%1)\n" \
- "2: stw %R2,4(%%sr2,%1)\n" \
- "9:\n" \
- ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \
- ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b) \
- : "=r"(__pu_err) \
- : "r"(ptr), "r"(__val), "0"(__pu_err)); \
+#define __put_user_asm64(sr, __val, ptr) do { \
+ __asm__ __volatile__ ( \
+ "1: stw %2,0(" sr "%1)\n" \
+ "2: stw %R2,4(" sr "%1)\n" \
+ "9:\n" \
+ ASM_EXCEPTIONTABLE_ENTRY_EFAULT(1b, 9b) \
+ ASM_EXCEPTIONTABLE_ENTRY_EFAULT(2b, 9b) \
+ : "=r"(__pu_err) \
+ : "r"(ptr), "r"(__val), "0"(__pu_err)); \
} while (0)
#endif /* !defined(CONFIG_64BIT) */
*/
extern long strncpy_from_user(char *, const char __user *, long);
-extern unsigned lclear_user(void __user *, unsigned long);
-extern long lstrnlen_user(const char __user *, long);
+extern __must_check unsigned lclear_user(void __user *, unsigned long);
+extern __must_check long strnlen_user(const char __user *src, long n);
/*
* Complex access routines -- macros
*/
-#define user_addr_max() (~0UL)
-#define strnlen_user lstrnlen_user
#define clear_user lclear_user
#define __clear_user lclear_user
DEFINE(TI_TASK, offsetof(struct thread_info, task));
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
- DEFINE(TI_SEGMENT, offsetof(struct thread_info, addr_limit));
DEFINE(TI_PRE_COUNT, offsetof(struct thread_info, preempt_count));
DEFINE(THREAD_SZ, sizeof(struct thread_info));
/* THREAD_SZ_ALGN includes space for a stack frame. */
#include <linux/uaccess.h>
EXPORT_SYMBOL(lclear_user);
-EXPORT_SYMBOL(lstrnlen_user);
#ifndef CONFIG_64BIT
/* Needed so insmod can set dp value */
#ifdef CONFIG_PA11
dma_ops_init();
#endif
-
- clear_sched_clock_stable();
}
/*
#endif
usp = (regs->gr[30] & ~(0x01UL));
+ sigframe_size = PARISC_RT_SIGFRAME_SIZE;
#ifdef CONFIG_64BIT
if (is_compat_task()) {
/* The gcc alloca implementation leaves garbage in the upper 32 bits of sp */
usp = (compat_uint_t)usp;
+ sigframe_size = PARISC_RT_SIGFRAME_SIZE32;
}
#endif
- /*FIXME: frame_size parameter is unused, remove it. */
- frame = get_sigframe(&ksig->ka, usp, sizeof(*frame));
+ frame = get_sigframe(&ksig->ka, usp, sigframe_size);
DBG(1,"SETUP_RT_FRAME: START\n");
DBG(1,"setup_rt_frame: frame %p info %p\n", frame, ksig->info);
+ start = (unsigned long) frame;
+ if (start >= user_addr_max() - sigframe_size)
+ return -EFAULT;
#ifdef CONFIG_64BIT
already in userspace. The first words of tramp are used to
save the previous sigrestartblock trampoline that might be
on the stack. We start the sigreturn trampoline at
- SIGRESTARTBLOCK_TRAMP+X. */
+ SIGRESTARTBLOCK_TRAMP. */
err |= __put_user(in_syscall ? INSN_LDI_R25_1 : INSN_LDI_R25_0,
&frame->tramp[SIGRESTARTBLOCK_TRAMP+0]);
- err |= __put_user(INSN_LDI_R20,
- &frame->tramp[SIGRESTARTBLOCK_TRAMP+1]);
err |= __put_user(INSN_BLE_SR2_R0,
+ &frame->tramp[SIGRESTARTBLOCK_TRAMP+1]);
+ err |= __put_user(INSN_LDI_R20,
&frame->tramp[SIGRESTARTBLOCK_TRAMP+2]);
- err |= __put_user(INSN_NOP, &frame->tramp[SIGRESTARTBLOCK_TRAMP+3]);
-
-#if DEBUG_SIG
- /* Assert that we're flushing in the correct space... */
- {
- unsigned long sid;
- asm ("mfsp %%sr3,%0" : "=r" (sid));
- DBG(1,"setup_rt_frame: Flushing 64 bytes at space %#x offset %p\n",
- sid, frame->tramp);
- }
-#endif
- start = (unsigned long) &frame->tramp[0];
- end = (unsigned long) &frame->tramp[TRAMP_SIZE];
+ start = (unsigned long) &frame->tramp[SIGRESTARTBLOCK_TRAMP+0];
+ end = (unsigned long) &frame->tramp[SIGRESTARTBLOCK_TRAMP+3];
flush_user_dcache_range_asm(start, end);
flush_user_icache_range_asm(start, end);
/* TRAMP Words 0-4, Length 5 = SIGRESTARTBLOCK_TRAMP
- * TRAMP Words 5-9, Length 4 = SIGRETURN_TRAMP
+ * TRAMP Words 5-7, Length 3 = SIGRETURN_TRAMP
* So the SIGRETURN_TRAMP is at the end of SIGRESTARTBLOCK_TRAMP
*/
rp = (unsigned long) &frame->tramp[SIGRESTARTBLOCK_TRAMP];
/* The syscall return path will create IAOQ values from r31.
*/
- sigframe_size = PARISC_RT_SIGFRAME_SIZE;
-#ifdef CONFIG_64BIT
- if (is_compat_task())
- sigframe_size = PARISC_RT_SIGFRAME_SIZE32;
-#endif
if (in_syscall) {
regs->gr[31] = haddr;
#ifdef CONFIG_64BIT
DBG(1,"ERESTARTNOHAND: returning -EINTR\n");
regs->gr[28] = -EINTR;
break;
-
case -ERESTARTSYS:
if (!(ka->sa.sa_flags & SA_RESTART)) {
DBG(1,"ERESTARTSYS: putting -EINTR\n");
unsigned long end = (unsigned long) &usp[5];
long err = 0;
+ /* check that we don't exceed the stack */
+ if (A(&usp[0]) >= user_addr_max() - 5 * sizeof(int))
+ return;
+
/* Setup a trampoline to restart the syscall
* with __NR_restart_syscall
*
}
/*
- * Note that 'init' is a special process: it doesn't get signals it doesn't
- * want to handle. Thus you cannot kill init even with a SIGKILL even by
- * mistake.
- *
* We need to be able to restore the syscall arguments (r21-r26) to
* restart syscalls. Thus, the syscall path should save them in the
* pt_regs structure (it's okay to do so since they are caller-save
compat_int_t rf_sar;
};
-#define COMPAT_SIGRETURN_TRAMP 4
+#define COMPAT_SIGRETURN_TRAMP 3
#define COMPAT_SIGRESTARTBLOCK_TRAMP 5
#define COMPAT_TRAMP_SIZE (COMPAT_SIGRETURN_TRAMP + \
COMPAT_SIGRESTARTBLOCK_TRAMP)
(cpu0_loc == per_cpu(cpu_data, cpu).cpu_loc))
continue;
+ /* mark sched_clock unstable */
+ clear_sched_clock_stable();
+
clocksource_cr16.name = "cr16_unstable";
clocksource_cr16.flags = CLOCK_SOURCE_UNSTABLE;
clocksource_cr16.rating = 0;
}
}
- /* XXX: We may want to mark sched_clock stable here if cr16 clocks are
- * in sync:
- * (clocksource_cr16.flags == CLOCK_SOURCE_IS_CONTINUOUS) */
-
/* register at clocksource framework */
clocksource_register_hz(&clocksource_cr16,
100 * PAGE0->mem_10msec);
#include <asm/errno.h>
#include <linux/linkage.h>
- /*
- * get_sr gets the appropriate space value into
- * sr1 for kernel/user space access, depending
- * on the flag stored in the task structure.
- */
-
- .macro get_sr
- mfctl %cr30,%r1
- ldw TI_SEGMENT(%r1),%r22
- mfsp %sr3,%r1
- or,<> %r22,%r0,%r0
- copy %r0,%r1
- mtsp %r1,%sr1
- .endm
-
/*
* unsigned long lclear_user(void *to, unsigned long n)
*
ENTRY_CFI(lclear_user)
comib,=,n 0,%r25,$lclu_done
- get_sr
$lclu_loop:
addib,<> -1,%r25,$lclu_loop
-1: stbs,ma %r0,1(%sr1,%r26)
+1: stbs,ma %r0,1(%sr3,%r26)
$lclu_done:
bv %r0(%r2)
ENDPROC_CFI(lclear_user)
- /*
- * long lstrnlen_user(char *s, long n)
- *
- * Returns 0 if exception before zero byte or reaching N,
- * N+1 if N would be exceeded,
- * else strlen + 1 (i.e. includes zero byte).
- */
-
-ENTRY_CFI(lstrnlen_user)
- comib,= 0,%r25,$lslen_nzero
- copy %r26,%r24
- get_sr
-1: ldbs,ma 1(%sr1,%r26),%r1
-$lslen_loop:
- comib,=,n 0,%r1,$lslen_done
- addib,<> -1,%r25,$lslen_loop
-2: ldbs,ma 1(%sr1,%r26),%r1
-$lslen_done:
- bv %r0(%r2)
- sub %r26,%r24,%r28
-
-$lslen_nzero:
- b $lslen_done
- ldo 1(%r26),%r26 /* special case for N == 0 */
-
-3: b $lslen_done
- copy %r24,%r26 /* reset r26 so 0 is returned on fault */
-
- ASM_EXCEPTIONTABLE_ENTRY(1b,3b)
- ASM_EXCEPTIONTABLE_ENTRY(2b,3b)
-
-ENDPROC_CFI(lstrnlen_user)
-
-
/*
* unsigned long pa_memcpy(void *dstp, const void *srcp, unsigned long len)
*
return container_of(hba, struct dino_device, hba);
}
-/* Check if PCI device is behind a Card-mode Dino. */
-static int pci_dev_is_behind_card_dino(struct pci_dev *dev)
-{
- struct dino_device *dino_dev;
-
- dino_dev = DINO_DEV(parisc_walk_tree(dev->bus->bridge));
- return is_card_dino(&dino_dev->hba.dev->id);
-}
-
/*
* Dino Configuration Space Accessor Functions
*/
DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_6832, quirk_cirrus_cardbus );
#ifdef CONFIG_TULIP
+/* Check if PCI device is behind a Card-mode Dino. */
+static int pci_dev_is_behind_card_dino(struct pci_dev *dev)
+{
+ struct dino_device *dino_dev;
+
+ dino_dev = DINO_DEV(parisc_walk_tree(dev->bus->bridge));
+ return is_card_dino(&dino_dev->hba.dev->id);
+}
+
static void pci_fixup_tulip(struct pci_dev *dev)
{
if (!pci_dev_is_behind_card_dino(dev))
projects / linux-2.6-microblaze.git / commitdiff