Merge with Linux 2.3.49.

9 files changed, 103 insertions, 93 deletions

diff --git a/arch/arm/kernel/arthur.c b/arch/arm/kernel/arthur.c
index 9994fdd4a..77c7d7396 100644
--- a/arch/arm/kernel/arthur.c
+++ b/arch/arm/kernel/arthur.c
@@ -1,6 +1,6 @@
 /*
  * Arthur personality
- * Copyright (C) 1998 Philip Blundell
+ * Copyright (C) 1998-1999 Philip Blundell
  */
 
 #include <linux/personality.h>
@@ -8,35 +8,36 @@
 #include <linux/stddef.h>
 #include <linux/signal.h>
 #include <linux/sched.h>
+#include <linux/init.h>
 
 #include <asm/ptrace.h>
 
-/* RISC OS doesn't have many signals, and a lot of those that it does
+/* Arthur doesn't have many signals, and a lot of those that it does
    have don't map easily to any Linux equivalent.  Never mind.  */
 
-#define RISCOS_SIGABRT		1
-#define RISCOS_SIGFPE		2
-#define RISCOS_SIGILL		3
-#define RISCOS_SIGINT		4
-#define RISCOS_SIGSEGV		5
-#define RISCOS_SIGTERM		6
-#define RISCOS_SIGSTAK		7
-#define RISCOS_SIGUSR1		8
-#define RISCOS_SIGUSR2		9
-#define RISCOS_SIGOSERROR	10
+#define ARTHUR_SIGABRT		1
+#define ARTHUR_SIGFPE		2
+#define ARTHUR_SIGILL		3
+#define ARTHUR_SIGINT		4
+#define ARTHUR_SIGSEGV		5
+#define ARTHUR_SIGTERM		6
+#define ARTHUR_SIGSTAK		7
+#define ARTHUR_SIGUSR1		8
+#define ARTHUR_SIGUSR2		9
+#define ARTHUR_SIGOSERROR	10
 
-static unsigned long riscos_to_linux_signals[32] = {
+static unsigned long arthur_to_linux_signals[32] = {
 	0,	1,	2,	3,	4,	5,	6,	7,
 	8,	9,	10,	11,	12,	13,	14,	15,
 	16,	17,	18,	19,	20,	21,	22,	23,
 	24,	25,	26,	27,	28,	29,	30,	31
 };
 
-static unsigned long linux_to_riscos_signals[32] = {
-	0,		-1,		RISCOS_SIGINT,	-1,
-       	RISCOS_SIGILL,	5,		RISCOS_SIGABRT,	7,
-	RISCOS_SIGFPE,	9,		RISCOS_SIGUSR1,	RISCOS_SIGSEGV,	
-	RISCOS_SIGUSR2,	13,		14,		RISCOS_SIGTERM,
+static unsigned long linux_to_arthur_signals[32] = {
+	0,		-1,		ARTHUR_SIGINT,	-1,
+       	ARTHUR_SIGILL,	5,		ARTHUR_SIGABRT,	7,
+	ARTHUR_SIGFPE,	9,		ARTHUR_SIGUSR1,	ARTHUR_SIGSEGV,	
+	ARTHUR_SIGUSR2,	13,		14,		ARTHUR_SIGTERM,
 	16,		17,		18,		19,
 	20,		21,		22,		23,
 	24,		25,		26,		27,
@@ -52,12 +53,12 @@ static void arthur_lcall7(int nr, struct pt_regs *regs)
 	send_sig_info(SIGSWI, &info, current);
 }
 
-static struct exec_domain riscos_exec_domain = {
+static struct exec_domain arthur_exec_domain = {
 	"Arthur",	/* name */
 	(lcall7_func)arthur_lcall7,
 	PER_RISCOS, PER_RISCOS,
-	riscos_to_linux_signals,
-	linux_to_riscos_signals,
+	arthur_to_linux_signals,
+	linux_to_arthur_signals,
 #ifdef MODULE
 	&__this_module,	/* No usage counter. */
 #else
@@ -71,18 +72,15 @@ static struct exec_domain riscos_exec_domain = {
  * processes are using it.
  */
 
-#ifdef MODULE
-int init_module(void)
-#else
-int initialise_arthur(void)
-#endif
+int __init arthur_init(void)
 {
-	return register_exec_domain(&riscos_exec_domain);
+	return register_exec_domain(&arthur_exec_domain);
 }
 
-#ifdef MODULE
-void cleanup_module(void)
+void __exit arthur_exit(void)
 {
-	unregister_exec_domain(&riscos_exec_domain);
+	unregister_exec_domain(&arthur_exec_domain);
 }
-#endif
+
+module_init(arthur_init);
+module_exit(arthur_exit);
diff --git a/arch/arm/kernel/entry-armo.S b/arch/arm/kernel/entry-armo.S
index f2dc9e36c..d6fa94867 100644
--- a/arch/arm/kernel/entry-armo.S
+++ b/arch/arm/kernel/entry-armo.S
@@ -22,6 +22,7 @@
  * adhering to the above criteria.
  */
 #include <linux/linkage.h>
+#include <linux/config.h>
 
 #include <asm/assembler.h>
 #include <asm/errno.h>
@@ -29,6 +30,12 @@
 
 #include "../lib/constants.h"
 
+		.macro	zero_fp
+#ifdef CONFIG_FRAME_POINTER
+		mov	fp, #0
+#endif
+		.endm
+
 		.text
 
 @ Offsets into task structure
@@ -213,7 +220,7 @@ irq_prio_h:	.byte	 0, 8, 9, 8,10,10,10,10,11,11,11,11,10,10,10,10
 		stmfd	sp!, {r0 - r12}		;\
 		mov	r0, #-1			;\
 		str	r0, [sp, #S_OLD_R0]	;\
-		mov	fp, #0
+		zero_fp
 
 #define SVC_IRQ_SAVE_ALL			\
 		str	sp, [sp, #-16]!		;\
@@ -224,7 +231,7 @@ irq_prio_h:	.byte	 0, 8, 9, 8,10,10,10,10,11,11,11,11,10,10,10,10
 		stmfd	sp!, {r0 - r12}		;\
 		mov	r0, #-1			;\
 		str	r0, [sp, #S_OLD_R0]	;\
-		mov	fp, #0
+		zero_fp
 
 #define SVC_RESTORE_ALL				\
 		ldmfd	sp, {r0 - pc}^
@@ -261,7 +268,7 @@ vector_undefinstr:
 		tst	lr,#3
 		bne	__und_svc
 		save_user_regs
-		mov	fp, #0
+		zero_fp
 		teqp	pc, #I_BIT | MODE_SVC
 .Lbug_undef:
 		ldr	r4, .LC2
@@ -283,6 +290,10 @@ __und_svc:	SVC_SAVE_ALL				@ Non-user mode
 		bl	SYMBOL_NAME(do_undefinstr)
 		SVC_RESTORE_ALL
 
+#ifdef CONFIG_NWFPE
+		/* The FPE is always present */
+		.equ	fpe_not_present, 0
+#else
 /* We get here if an undefined instruction happens and the floating
  * point emulator is not present.  If the offending instruction was
  * a WFS, we just perform a normal return as if we had emulated the
@@ -319,6 +330,7 @@ wfs_mask_data:	.word	0x0e200110			@ WFS/RFS
 		.word	0x0d0d0100			@ LDF [sp]/STF [sp]
 		.word	0x0d0b0100			@ LDF [fp]/STF [fp]
 		.word	0x0f0f0f00
+#endif
 
 .LC2:		.word	SYMBOL_NAME(fp_enter)
 
@@ -686,7 +698,7 @@ ENTRY(__switch_to)
 /*
  * initialise the trap system
  */
-ENTRY(trap_init)
+ENTRY(__trap_init)
 		stmfd	sp!, {r4 - r7, lr}
 		adr	r1, .Ljump_addresses
 		ldmia	r1, {r1 - r7, ip, lr}
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index f4f03ee93..fe3939888 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -24,6 +24,12 @@
 #define MODE_SVC 0x13
 #endif
 
+		.macro	zero_fp
+#ifdef CONFIG_FRAME_POINTER
+		mov	fp, #0
+#endif
+		.endm
+
 		.text
 
 #define PF_TRACESYS	0x20
@@ -421,7 +427,7 @@ __und_invalid:	sub	sp, sp, #S_FRAME_SIZE
 		ldr	r4, .LCund
 		mov	r1, #BAD_UNDEFINSTR		@ int reason
 
-1:		mov	fp, #0
+1:		zero_fp
 		ldmia	r4, {r5 - r7}			@ Get XXX pc, cpsr, old_r0
 		add	r4, sp, #S_PC
 		stmia	r4, {r5 - r7}			@ Save XXX pc, cpsr, old_r0
@@ -573,7 +579,7 @@ __dabt_usr:	sub	sp, sp, #S_FRAME_SIZE		@ Allocate frame size in one go
 		stmia	r3, {r0 - r2}			@ Save USR pc, cpsr, old_r0
 		stmdb	r3, {sp, lr}^
 		alignment_trap r4, r7, __temp_abt
-		mov	fp, #0
+		zero_fp
 #ifdef MULTI_CPU
 		ldr	r2, .LCprocfns
 		mov	lr, pc
@@ -595,7 +601,7 @@ __irq_usr:	sub	sp, sp, #S_FRAME_SIZE
 		stmia	r8, {r5 - r7}			@ save pc, psr, old_r0
 		stmdb	r8, {sp, lr}^
 		alignment_trap r4, r7, __temp_irq
-		mov	fp, #0
+		zero_fp
 1:		get_irqnr_and_base r0, r6, r5
 		movne	r1, sp
 		adrsvc	ne, lr, 1b
@@ -615,7 +621,7 @@ __und_usr:	sub	sp, sp, #S_FRAME_SIZE		@ Allocate frame size in one go
 		stmia	r8, {r5 - r7}			@ Save USR pc, cpsr, old_r0
 		stmdb	r8, {sp, lr}^			@ Save user r0 - r12
 		alignment_trap r4, r7, __temp_und
-		mov	fp, #0
+		zero_fp
 		adrsvc	al, r9, ret_from_sys_call	@ r9  = normal FP return
 		adrsvc	al, lr, fpundefinstr		@ lr  = undefined instr return
 
@@ -641,7 +647,7 @@ __pabt_usr:	sub	sp, sp, #S_FRAME_SIZE		@ Allocate frame size in one go
 		stmia	r8, {r5 - r7}			@ Save USR pc, cpsr, old_r0
 		stmdb	r8, {sp, lr}^			@ Save sp_usr lr_usr
 		alignment_trap r4, r7, __temp_abt
-		mov	fp, #0
+		zero_fp
 		msr	cpsr_c, #MODE_SVC		@ Enable interrupts
 		mov	r0, r5				@ address (pc)
 		mov	r1, sp				@ regs
@@ -688,11 +694,11 @@ t:		.ascii "Prefetch -> undefined instruction\n\0"
 ENTRY(__switch_to)
 		stmfd	sp!, {r4 - sl, fp, lr}		@ Store most regs on stack
 		mrs	ip, cpsr
-		stmfd	sp!, {ip}			@ Save cpsr_SVC
+		str	ip, [sp, #-4]!			@ Save cpsr_SVC
 		str	sp, [r0, #TSS_SAVE]		@ Save sp_SVC
 		ldr	sp, [r1, #TSS_SAVE]		@ Get saved sp_SVC
 		ldr	r2, [r1, #TSS_DOMAIN]
-		ldmfd	sp!, {ip}
+		ldr	ip, [sp], #4
 		mcr	p15, 0, r2, c3, c0		@ Set domain register
 		msr	spsr, ip			@ Save tasks CPSR into SPSR for this return
 		ldmfd	sp!, {r4 - sl, fp, pc}^		@ Load all regs saved previously
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 5dc61c6d7..97dfef0c1 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -4,16 +4,6 @@
  */
 
 #define S_OFF		8
-#define SYSCALL_REGS	r4, r5
-
-/*
- * Define to favour ARM8, ARM9 and StrongARM cpus.  This says that it is
- * cheaper to use two LDR instructions than a two-register LDM, if the
- * latter would entail calculating an address specially.
- */
-#if defined(CONFIG_CPU_SA110)
-#define HARVARD_CACHE
-#endif
 
 		.macro	get_softirq, rd
 #ifdef __SMP__
@@ -85,7 +75,7 @@ tip		.req	r7			@ temporary IP
 		.align	5
 vector_swi:	save_user_regs
 		mask_pc	lr, lr
-		mov	fp, #0
+		zero_fp
 		ldr	scno, [lr, #-4]		@ get SWI instruction
 		arm700_bug_check scno, ip
 #ifdef CONFIG_ALIGNMENT_TRAP
@@ -95,9 +85,7 @@ vector_swi:	save_user_regs
 #endif
 		enable_irqs ip
 
-		stmdb	sp!, {SYSCALL_REGS}	@ new style: (r0 = arg1, r4 = arg5, r5 = arg6)
-						@ Note that we dont have to handle
-						@ sys_syscalls arg7 here
+		str	r4, [sp, #-S_OFF]!	@ push fifth arg
 		adrsvc	al, lr, fast_syscall_return
 
 		bic	scno, scno, #0xff000000	@ mask off SWI op-code
@@ -141,10 +129,11 @@ vector_swi:	save_user_regs
 		b	SYMBOL_NAME(deferred)
 
 		.align	5
-
+		.type	__softirq_state, #object
 __softirq_state:
 		.word	SYMBOL_NAME(softirq_state)
 
+		.type	sys_call_table, #object
 ENTRY(sys_call_table)
 #include "calls.S"
 
@@ -153,15 +142,18 @@ ENTRY(sys_call_table)
  */
 @ r0 = syscall number
 @ r5 = syscall table
+		.type	sys_syscall, #function
 SYMBOL_NAME(sys_syscall):
 		eor	scno, r0, #OS_NUMBER << 20
 		cmp	scno, #NR_syscalls	@ check range
 		add	ip, sp, #S_OFF
-		ldmleib	ip, {r0 - r3, SYSCALL_REGS}	@ get our args
-		stmleia	sp, {SYSCALL_REGS}	@ Put our arg on the stack
+		stmleia	sp, {r5, r6}		@ shuffle args
+		movle	r0, r1
+		movle	r1, r2
+		movle	r2, r3
+		movle	r3, r4
 		ldrle	pc, [tbl, scno, lsl #2]
-		mov	r0, #-ENOSYS
-		RETINSTR(mov,pc,lr)
+		b	sys_ni_syscall
 
 sys_fork_wrapper:
 		add	r0, sp, #S_OFF
@@ -199,6 +191,23 @@ sys_sigaltstack_wrapper:
 		ldr	r2, [sp, #S_OFF + S_SP]
 		b	do_sigaltstack
 
+/*
+ * Note: off_4k (r5) is always units of 4K.  If we can't do the requested
+ * offset, we return EINVAL.
+ */
+sys_mmap2:
+#if PAGE_SHIFT > 12
+		tst	r5, #PGOFF_MASK
+		moveq	r5, r5, lsr #PGOFF_SHIFT
+		streq	r5, [sp, #4]
+		beq	do_mmap2
+		mov	r0, #-EINVAL
+		RETINSTR(mov,pc, lr)
+#else
+		str	r5, [sp, #4]
+		b	do_mmap2
+#endif
+
 		.data
 
 ENTRY(fp_enter)
diff --git a/arch/arm/kernel/hw-footbridge.c b/arch/arm/kernel/hw-footbridge.c
index e06c8092d..8dcad0b93 100644
--- a/arch/arm/kernel/hw-footbridge.c
+++ b/arch/arm/kernel/hw-footbridge.c
@@ -68,13 +68,13 @@ static inline void wb977_ww(int reg, int val)
 /*
  * This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE
  */
-spinlock_t __netwinder_data gpio_lock = SPIN_LOCK_UNLOCKED;
+spinlock_t gpio_lock = SPIN_LOCK_UNLOCKED;
 
-static unsigned int __netwinder_data current_gpio_op = 0;
-static unsigned int __netwinder_data current_gpio_io = 0;
-static unsigned int __netwinder_data current_cpld = 0;
+static unsigned int current_gpio_op = 0;
+static unsigned int current_gpio_io = 0;
+static unsigned int current_cpld = 0;
 
-void __netwinder_text gpio_modify_op(int mask, int set)
+void gpio_modify_op(int mask, int set)
 {
 	unsigned int new_gpio, changed;
 
@@ -119,7 +119,7 @@ static inline void __gpio_modify_io(int mask, int in)
 	}
 }
 
-void __netwinder_text gpio_modify_io(int mask, int in)
+void gpio_modify_io(int mask, int in)
 {
 	/* Open up the SuperIO chip */
 	wb977_open();
@@ -130,7 +130,7 @@ void __netwinder_text gpio_modify_io(int mask, int in)
 	wb977_close();
 }
 
-int __netwinder_text gpio_read(void)
+int gpio_read(void)
 {
 	return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8;
 }
@@ -360,7 +360,7 @@ static void __init wb977_init(void)
 	wb977_close();
 }
 
-void __netwinder_text cpld_modify(int mask, int set)
+void cpld_modify(int mask, int set)
 {
 	int msk;
 
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 6e3c863d5..699cea4ab 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -471,6 +471,10 @@ out:
 	return irq_found;
 }
 
+void __init init_irq_proc(void)
+{
+}
+
 void __init init_IRQ(void)
 {
 	extern void init_dma(void);
diff --git a/arch/arm/kernel/leds-footbridge.c b/arch/arm/kernel/leds-footbridge.c
index 90f2fe109..05f232f57 100644
--- a/arch/arm/kernel/leds-footbridge.c
+++ b/arch/arm/kernel/leds-footbridge.c
@@ -37,7 +37,7 @@ extern spinlock_t gpio_lock;
 
 #ifdef CONFIG_FOOTBRIDGE
 
-static void __ebsa285_text ebsa285_leds_event(led_event_t evt)
+static void ebsa285_leds_event(led_event_t evt)
 {
 	unsigned long flags;
 
@@ -129,7 +129,7 @@ static void __ebsa285_text ebsa285_leds_event(led_event_t evt)
 
 #ifdef CONFIG_ARCH_NETWINDER
 
-static void __netwinder_text netwinder_leds_event(led_event_t evt)
+static void netwinder_leds_event(led_event_t evt)
 {
 	unsigned long flags;
 
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index a2f7292f6..5815529aa 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -767,6 +767,8 @@ void __init setup_arch(char **cmdline_p)
 	setup_bootmem();
 	request_standard_resources(mdesc);
 
+	paging_init();
+
 #ifdef CONFIG_VT
 #if defined(CONFIG_VGA_CONSOLE)
 	conswitchp = &vga_con;
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index 47b2930c2..9abb9e617 100644
--- a/arch/arm/kernel/sys_arm.c
+++ b/arch/arm/kernel/sys_arm.c
@@ -50,7 +50,7 @@ asmlinkage int sys_pipe(unsigned long * fildes)
 }
 
 /* common code for old and new mmaps */
-static inline long do_mmap2(
+inline long do_mmap2(
 	unsigned long addr, unsigned long len,
 	unsigned long prot, unsigned long flags,
 	unsigned long fd, unsigned long pgoff)
@@ -79,27 +79,6 @@ out:
 	return error;
 }
 
-#define PGOFF_SHIFT (PAGE_SHIFT - 12)
-#define PGOFF_MASK  (~((1 << PGOFF_SHIFT) - 1))
-
-/*
- * Note: off_4k is always units of 4K.  If we can't do the requested
- * offset, we return EINVAL.
- */
-asmlinkage long
-sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
-	  unsigned long flags, unsigned long fd, unsigned long off_4k)
-{
-	unsigned long pgoff;
-
-	if (off_4k & ~PGOFF_MASK)
-		return -EINVAL;
-
-	pgoff = off_4k >> PGOFF_SHIFT;
-
-	return do_mmap2(addr, len, prot, flags, fd, pgoff);
-}
-
 struct mmap_arg_struct {
 	unsigned long addr;
 	unsigned long len;