summaryrefslogtreecommitdiffstats
path: root/arch/m68k
diff options
context:
space:
mode:
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/kernel/entry.S4
-rw-r--r--arch/m68k/kernel/ints.c6
-rw-r--r--arch/m68k/kernel/signal.c2
-rw-r--r--arch/m68k/kernel/traps.c8
-rw-r--r--arch/m68k/lib/Makefile4
-rw-r--r--arch/m68k/lib/uaccess.c222
-rw-r--r--arch/m68k/mac/config.c13
-rw-r--r--arch/m68k/mac/macints.c1
-rw-r--r--arch/m68k/mac/via.c17
-rw-r--r--arch/m68k/mm/motorola.c12
-rw-r--r--arch/m68k/mm/sun3mmu.c5
11 files changed, 248 insertions, 46 deletions
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 320fde05dc63..522079f8c2ba 100644
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -226,7 +226,7 @@ ENTRY(nmi_handler)
inthandler:
SAVE_ALL_INT
GET_CURRENT(%d0)
- addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+2)
+ addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
| put exception # in d0
bfextu %sp@(PT_VECTOR){#4,#10},%d0
@@ -245,7 +245,7 @@ inthandler:
3: addql #8,%sp | pop parameters off stack
ret_from_interrupt:
- subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+2)
+ subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
jeq 1f
2:
RESTORE_ALL
diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c
index 514d323ad536..4b85514792e7 100644
--- a/arch/m68k/kernel/ints.c
+++ b/arch/m68k/kernel/ints.c
@@ -95,6 +95,12 @@ void __init init_IRQ(void)
{
int i;
+ /* assembly irq entry code relies on this... */
+ if (HARDIRQ_MASK != 0x00ff0000) {
+ extern void hardirq_mask_is_broken(void);
+ hardirq_mask_is_broken();
+ }
+
for (i = 0; i < SYS_IRQS; i++) {
if (mach_default_handler)
irq_list[i].handler = (*mach_default_handler)[i];
diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c
index 866917bfa028..f9af893cd289 100644
--- a/arch/m68k/kernel/signal.c
+++ b/arch/m68k/kernel/signal.c
@@ -763,7 +763,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
/* This is the X/Open sanctioned signal stack switching. */
if (ka->sa.sa_flags & SA_ONSTACK) {
- if (!on_sig_stack(usp))
+ if (!sas_ss_flags(usp))
usp = current->sas_ss_sp + current->sas_ss_size;
}
return (void __user *)((usp - frame_size) & -8UL);
diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c
index cdf58fbb3e73..837a88709902 100644
--- a/arch/m68k/kernel/traps.c
+++ b/arch/m68k/kernel/traps.c
@@ -114,7 +114,7 @@ void __init base_trap_init(void)
if(MACH_IS_SUN3X) {
extern e_vector *sun3x_prom_vbr;
- __asm__ volatile ("movec %%vbr, %0" : "=r" ((void*)sun3x_prom_vbr));
+ __asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr));
}
/* setup the exception vector table */
@@ -992,6 +992,7 @@ void show_registers(struct pt_regs *regs)
void show_stack(struct task_struct *task, unsigned long *stack)
{
+ unsigned long *p;
unsigned long *endstack;
int i;
@@ -1004,12 +1005,13 @@ void show_stack(struct task_struct *task, unsigned long *stack)
endstack = (unsigned long *)(((unsigned long)stack + THREAD_SIZE - 1) & -THREAD_SIZE);
printk("Stack from %08lx:", (unsigned long)stack);
+ p = stack;
for (i = 0; i < kstack_depth_to_print; i++) {
- if (stack + 1 > endstack)
+ if (p + 1 > endstack)
break;
if (i % 8 == 0)
printk("\n ");
- printk(" %08lx", *stack++);
+ printk(" %08lx", *p++);
}
printk("\n");
show_trace(stack);
diff --git a/arch/m68k/lib/Makefile b/arch/m68k/lib/Makefile
index ebe51a513817..6bbf19f96007 100644
--- a/arch/m68k/lib/Makefile
+++ b/arch/m68k/lib/Makefile
@@ -4,5 +4,5 @@
EXTRA_AFLAGS := -traditional
-lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
- checksum.o string.o semaphore.o
+lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
+ checksum.o string.o semaphore.o uaccess.o
diff --git a/arch/m68k/lib/uaccess.c b/arch/m68k/lib/uaccess.c
new file mode 100644
index 000000000000..1bc188c0d983
--- /dev/null
+++ b/arch/m68k/lib/uaccess.c
@@ -0,0 +1,222 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <asm/uaccess.h>
+
+unsigned long __generic_copy_from_user(void *to, const void __user *from,
+ unsigned long n)
+{
+ unsigned long tmp, res;
+
+ asm volatile ("\n"
+ " tst.l %0\n"
+ " jeq 2f\n"
+ "1: moves.l (%1)+,%3\n"
+ " move.l %3,(%2)+\n"
+ " subq.l #1,%0\n"
+ " jne 1b\n"
+ "2: btst #1,%5\n"
+ " jeq 4f\n"
+ "3: moves.w (%1)+,%3\n"
+ " move.w %3,(%2)+\n"
+ "4: btst #0,%5\n"
+ " jeq 6f\n"
+ "5: moves.b (%1)+,%3\n"
+ " move.b %3,(%2)+\n"
+ "6:\n"
+ " .section .fixup,\"ax\"\n"
+ " .even\n"
+ "10: move.l %0,%3\n"
+ "7: clr.l (%2)+\n"
+ " subq.l #1,%3\n"
+ " jne 7b\n"
+ " lsl.l #2,%0\n"
+ " btst #1,%5\n"
+ " jeq 8f\n"
+ "30: clr.w (%2)+\n"
+ " addq.l #2,%0\n"
+ "8: btst #0,%5\n"
+ " jeq 6b\n"
+ "50: clr.b (%2)+\n"
+ " addq.l #1,%0\n"
+ " jra 6b\n"
+ " .previous\n"
+ "\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 1b,10b\n"
+ " .long 3b,30b\n"
+ " .long 5b,50b\n"
+ " .previous"
+ : "=d" (res), "+a" (from), "+a" (to), "=&r" (tmp)
+ : "0" (n / 4), "d" (n & 3));
+
+ return res;
+}
+EXPORT_SYMBOL(__generic_copy_from_user);
+
+unsigned long __generic_copy_to_user(void __user *to, const void *from,
+ unsigned long n)
+{
+ unsigned long tmp, res;
+
+ asm volatile ("\n"
+ " tst.l %0\n"
+ " jeq 4f\n"
+ "1: move.l (%1)+,%3\n"
+ "2: moves.l %3,(%2)+\n"
+ "3: subq.l #1,%0\n"
+ " jne 1b\n"
+ "4: btst #1,%5\n"
+ " jeq 6f\n"
+ " move.w (%1)+,%3\n"
+ "5: moves.w %3,(%2)+\n"
+ "6: btst #0,%5\n"
+ " jeq 8f\n"
+ " move.b (%1)+,%3\n"
+ "7: moves.b %3,(%2)+\n"
+ "8:\n"
+ " .section .fixup,\"ax\"\n"
+ " .even\n"
+ "20: lsl.l #2,%0\n"
+ "50: add.l %5,%0\n"
+ " jra 7b\n"
+ " .previous\n"
+ "\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 2b,20b\n"
+ " .long 3b,20b\n"
+ " .long 5b,50b\n"
+ " .long 6b,50b\n"
+ " .long 7b,50b\n"
+ " .long 8b,50b\n"
+ " .previous"
+ : "=d" (res), "+a" (from), "+a" (to), "=&r" (tmp)
+ : "0" (n / 4), "d" (n & 3));
+
+ return res;
+}
+EXPORT_SYMBOL(__generic_copy_to_user);
+
+/*
+ * Copy a null terminated string from userspace.
+ */
+long strncpy_from_user(char *dst, const char __user *src, long count)
+{
+ long res;
+ char c;
+
+ if (count <= 0)
+ return count;
+
+ asm volatile ("\n"
+ "1: moves.b (%2)+,%4\n"
+ " move.b %4,(%1)+\n"
+ " jeq 2f\n"
+ " subq.l #1,%3\n"
+ " jne 1b\n"
+ "2: sub.l %3,%0\n"
+ "3:\n"
+ " .section .fixup,\"ax\"\n"
+ " .even\n"
+ "10: move.l %5,%0\n"
+ " jra 3b\n"
+ " .previous\n"
+ "\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 1b,10b\n"
+ " .previous"
+ : "=d" (res), "+a" (dst), "+a" (src), "+r" (count), "=&d" (c)
+ : "i" (-EFAULT), "0" (count));
+
+ return res;
+}
+EXPORT_SYMBOL(strncpy_from_user);
+
+/*
+ * Return the size of a string (including the ending 0)
+ *
+ * Return 0 on exception, a value greater than N if too long
+ */
+long strnlen_user(const char __user *src, long n)
+{
+ char c;
+ long res;
+
+ asm volatile ("\n"
+ "1: subq.l #1,%1\n"
+ " jmi 3f\n"
+ "2: moves.b (%0)+,%2\n"
+ " tst.b %2\n"
+ " jne 1b\n"
+ " jra 4f\n"
+ "\n"
+ "3: addq.l #1,%0\n"
+ "4: sub.l %4,%0\n"
+ "5:\n"
+ " .section .fixup,\"ax\"\n"
+ " .even\n"
+ "20: sub.l %0,%0\n"
+ " jra 5b\n"
+ " .previous\n"
+ "\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 2b,20b\n"
+ " .previous\n"
+ : "=&a" (res), "+d" (n), "=&d" (c)
+ : "0" (src), "r" (src));
+
+ return res;
+}
+EXPORT_SYMBOL(strnlen_user);
+
+/*
+ * Zero Userspace
+ */
+
+unsigned long clear_user(void __user *to, unsigned long n)
+{
+ unsigned long res;
+
+ asm volatile ("\n"
+ " tst.l %0\n"
+ " jeq 3f\n"
+ "1: moves.l %2,(%1)+\n"
+ "2: subq.l #1,%0\n"
+ " jne 1b\n"
+ "3: btst #1,%4\n"
+ " jeq 5f\n"
+ "4: moves.w %2,(%1)+\n"
+ "5: btst #0,%4\n"
+ " jeq 7f\n"
+ "6: moves.b %2,(%1)\n"
+ "7:\n"
+ " .section .fixup,\"ax\"\n"
+ " .even\n"
+ "10: lsl.l #2,%0\n"
+ "40: add.l %4,%0\n"
+ " jra 7b\n"
+ " .previous\n"
+ "\n"
+ " .section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 1b,10b\n"
+ " .long 2b,10b\n"
+ " .long 4b,40b\n"
+ " .long 5b,40b\n"
+ " .long 6b,40b\n"
+ " .long 7b,40b\n"
+ " .previous"
+ : "=d" (res), "+a" (to)
+ : "r" (0), "0" (n / 4), "d" (n & 3));
+
+ return res;
+}
+EXPORT_SYMBOL(clear_user);
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index 14f8d3f4e195..19dce75711b1 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -89,24 +89,11 @@ extern void mac_debugging_long(int, long);
static void mac_get_model(char *str);
-void mac_bang(int irq, void *vector, struct pt_regs *p)
-{
- printk(KERN_INFO "Resetting ...\n");
- mac_reset();
-}
-
static void mac_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *))
{
via_init_clock(vector);
}
-#if 0
-void mac_waitbut (void)
-{
- ;
-}
-#endif
-
extern irqreturn_t mac_default_handler(int, void *, struct pt_regs *);
irqreturn_t (*mac_handlers[8])(int, void *, struct pt_regs *)=
diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c
index 1809601ad903..7a1600bd195d 100644
--- a/arch/m68k/mac/macints.c
+++ b/arch/m68k/mac/macints.c
@@ -216,7 +216,6 @@ static void scc_irq_disable(int);
* console_loglevel determines NMI handler function
*/
-extern irqreturn_t mac_bang(int, void *, struct pt_regs *);
irqreturn_t mac_nmi_handler(int, void *, struct pt_regs *);
irqreturn_t mac_debug_handler(int, void *, struct pt_regs *);
diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c
index cd528bf7b43f..a6e3814c8666 100644
--- a/arch/m68k/mac/via.c
+++ b/arch/m68k/mac/via.c
@@ -25,7 +25,6 @@
#include <linux/init.h>
#include <linux/ide.h>
-#include <asm/traps.h>
#include <asm/bootinfo.h>
#include <asm/macintosh.h>
#include <asm/macints.h>
@@ -71,7 +70,6 @@ void via_irq_enable(int irq);
void via_irq_disable(int irq);
void via_irq_clear(int irq);
-extern irqreturn_t mac_bang(int, void *, struct pt_regs *);
extern irqreturn_t mac_scc_dispatch(int, void *, struct pt_regs *);
extern int oss_present;
@@ -212,11 +210,6 @@ void __init via_init(void)
break;
}
#else
- /* The alernate IRQ mapping seems to just not work. Anyone with a */
- /* supported machine is welcome to take a stab at fixing it. It */
- /* _should_ work on the following Quadras: 610,650,700,800,900,950 */
- /* - 1999-06-12 (jmt) */
-
via_alt_mapping = 0;
#endif
@@ -270,12 +263,6 @@ void __init via_register_interrupts(void)
cpu_request_irq(IRQ_AUTO_1, via1_irq,
IRQ_FLG_LOCK|IRQ_FLG_FAST, "via1",
(void *) via1);
-#if 0 /* interferes with serial on some machines */
- if (!psc_present) {
- cpu_request_irq(IRQ_AUTO_6, mac_bang, IRQ_FLG_LOCK,
- "Off Switch", mac_bang);
- }
-#endif
}
cpu_request_irq(IRQ_AUTO_2, via2_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST,
"via2", (void *) via2);
@@ -471,8 +458,8 @@ irqreturn_t via2_irq(int irq, void *dev_id, struct pt_regs *regs)
for (i = 0, irq_bit = 1 ; i < 7 ; i++, irq_bit <<= 1)
if (events & irq_bit) {
via2[gIER] = irq_bit;
- mac_do_irq_list(VIA2_SOURCE_BASE + i, regs);
via2[gIFR] = irq_bit | rbv_clear;
+ mac_do_irq_list(VIA2_SOURCE_BASE + i, regs);
via2[gIER] = irq_bit | 0x80;
}
return IRQ_HANDLED;
@@ -529,6 +516,7 @@ void via_irq_enable(int irq) {
}
via2[gIER] = irq_bit | 0x80;
} else if (irq_src == 7) {
+ nubus_active |= irq_bit;
if (rbv_present) {
/* enable the slot interrupt. SIER works like IER. */
via2[rSIER] = IER_SET_BIT(irq_idx);
@@ -550,7 +538,6 @@ void via_irq_enable(int irq) {
}
}
}
- nubus_active |= irq_bit;
}
}
diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
index afb57eeafdcb..bdb11103694b 100644
--- a/arch/m68k/mm/motorola.c
+++ b/arch/m68k/mm/motorola.c
@@ -203,7 +203,7 @@ void __init paging_init(void)
{
int chunk;
unsigned long mem_avail = 0;
- unsigned long zones_size[3] = { 0, };
+ unsigned long zones_size[MAX_NR_ZONES] = { 0, };
#ifdef DEBUG
{
@@ -257,12 +257,12 @@ void __init paging_init(void)
#ifdef DEBUG
printk ("before free_area_init\n");
#endif
- zones_size[0] = (mach_max_dma_address < (unsigned long)high_memory ?
- (mach_max_dma_address+1) : (unsigned long)high_memory);
- zones_size[1] = (unsigned long)high_memory - zones_size[0];
+ zones_size[ZONE_DMA] = (mach_max_dma_address < (unsigned long)high_memory ?
+ (mach_max_dma_address+1) : (unsigned long)high_memory);
+ zones_size[ZONE_NORMAL] = (unsigned long)high_memory - zones_size[0];
- zones_size[0] = (zones_size[0] - PAGE_OFFSET) >> PAGE_SHIFT;
- zones_size[1] >>= PAGE_SHIFT;
+ zones_size[ZONE_DMA] = (zones_size[ZONE_DMA] - PAGE_OFFSET) >> PAGE_SHIFT;
+ zones_size[ZONE_NORMAL] >>= PAGE_SHIFT;
free_area_init(zones_size);
}
diff --git a/arch/m68k/mm/sun3mmu.c b/arch/m68k/mm/sun3mmu.c
index a47be196a47c..ac6640ade0b1 100644
--- a/arch/m68k/mm/sun3mmu.c
+++ b/arch/m68k/mm/sun3mmu.c
@@ -46,7 +46,7 @@ void __init paging_init(void)
unsigned long address;
unsigned long next_pgtable;
unsigned long bootmem_end;
- unsigned long zones_size[3] = {0, 0, 0};
+ unsigned long zones_size[MAX_NR_ZONES] = { 0, };
unsigned long size;
@@ -92,8 +92,7 @@ void __init paging_init(void)
current->mm = NULL;
/* memory sizing is a hack stolen from motorola.c.. hope it works for us */
- zones_size[0] = ((unsigned long)high_memory - PAGE_OFFSET) >> PAGE_SHIFT;
- zones_size[1] = 0;
+ zones_size[ZONE_DMA] = ((unsigned long)high_memory - PAGE_OFFSET) >> PAGE_SHIFT;
free_area_init(zones_size);
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-13 15:58:32 +0000