---

yaml --- r: 18550 b: refs/heads/master c: 3f2829a h: refs/heads/master v: v3
git-mirror · Jan 14, 2006 · faf21ed · faf21ed
1 parent 1a0819f
commit faf21ed
Show file tree

Hide file tree

Showing 4 changed files with 49 additions and 38 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ba95e4e4a0a8a3c6aba363d45f78d5f2e2d111eb
+refs/heads/master: 3f2829a31573e3e502b874c8d69a765f7a778793
diff --git a/trunk/arch/arm/kernel/entry-common.S b/trunk/arch/arm/kernel/entry-common.S
@@ -98,20 +98,14 @@ ENTRY(ret_from_fork)
 	   run on an ARM7 and we can save a couple of instructions.  
 								--pb */
 #ifdef CONFIG_CPU_ARM710
-	.macro	arm710_bug_check, instr, temp
-	and	\temp, \instr, #0x0f000000	@ check for SWI
-	teq	\temp, #0x0f000000
-	bne	.Larm700bug
-	.endm
-
-.Larm700bug:
+#define A710(code...) code
+.Larm710bug:
 	ldmia	sp, {r0 - lr}^			@ Get calling r0 - lr
 	mov	r0, r0
 	add	sp, sp, #S_FRAME_SIZE
 	subs	pc, lr, #4
 #else
-	.macro	arm710_bug_check, instr, temp
-	.endm
+#define A710(code...)
 #endif
 
 	.align	5
@@ -129,14 +123,24 @@ ENTRY(vector_swi)
 	/*
 	 * Get the system call number.
 	 */
-#ifdef CONFIG_ARM_THUMB
+#if defined(CONFIG_AEABI)
+
+	@ syscall number is in scno (r7) already.
+
+  A710(	ldr	ip, [lr, #-4]			@ get SWI instruction	)
+  A710(	and	ip, ip, #0x0f000000		@ check for SWI		)
+  A710(	teq	ip, #0x0f000000						)
+  A710(	bne	.Larm710bug						)
+#elif defined(CONFIG_ARM_THUMB)
 	tst	r8, #PSR_T_BIT			@ this is SPSR from save_user_regs
 	addne	scno, r7, #__NR_SYSCALL_BASE	@ put OS number in
 	ldreq	scno, [lr, #-4]
 #else
 	ldr	scno, [lr, #-4]			@ get SWI instruction
+  A710(	and	ip, scno, #0x0f000000		@ check for SWI		)
+  A710(	teq	ip, #0x0f000000						)
+  A710(	bne	.Larm710bug						)
 #endif
-	arm710_bug_check scno, ip
 
 #ifdef CONFIG_ALIGNMENT_TRAP
 	ldr	ip, __cr_alignment
@@ -145,18 +149,19 @@ ENTRY(vector_swi)
 #endif
 	enable_irq
 
-	stmdb	sp!, {r4, r5}			@ push fifth and sixth args
-
 	get_thread_info tsk
 	ldr	ip, [tsk, #TI_FLAGS]		@ check for syscall tracing
+#ifndef CONFIG_AEABI
 	bic	scno, scno, #0xff000000		@ mask off SWI op-code
 	eor	scno, scno, #__NR_SYSCALL_BASE	@ check OS number
+#endif
 	adr	tbl, sys_call_table		@ load syscall table pointer
+	stmdb	sp!, {r4, r5}			@ push fifth and sixth args
 	tst	ip, #_TIF_SYSCALL_TRACE		@ are we tracing syscalls?
 	bne	__sys_trace
 
-	adr	lr, ret_fast_syscall		@ return address
 	cmp	scno, #NR_syscalls		@ check upper syscall limit
+	adr	lr, ret_fast_syscall		@ return address
 	ldrcc	pc, [tbl, scno, lsl #2]		@ call sys_* routine
 
 	add	r1, sp, #S_OFF
@@ -207,6 +212,7 @@ ENTRY(sys_call_table)
 @ r8 = syscall table
 		.type	sys_syscall, #function
 sys_syscall:
+#ifndef CONFIG_AEABI
 		eor	scno, r0, #__NR_SYSCALL_BASE
 		cmp	scno, #__NR_syscall - __NR_SYSCALL_BASE
 		cmpne	scno, #NR_syscalls	@ check range
@@ -216,6 +222,7 @@ sys_syscall:
 		movlo	r2, r3
 		movlo	r3, r4
 		ldrlo	pc, [tbl, scno, lsl #2]
+#endif
 		b	sys_ni_syscall
 
 sys_fork_wrapper:

diff --git a/trunk/arch/arm/kernel/traps.c b/trunk/arch/arm/kernel/traps.c
@@ -404,7 +404,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
 	struct thread_info *thread = current_thread_info();
 	siginfo_t info;
 
-	if ((no >> 16) != 0x9f)
+	if ((no >> 16) != (__ARM_NR_BASE>> 16))
 		return bad_syscall(no, regs);
 
 	switch (no & 0xffff) {

diff --git a/trunk/include/asm-arm/unistd.h b/trunk/include/asm-arm/unistd.h
@@ -15,10 +15,12 @@
 
 #include <linux/linkage.h>
 
-#if defined(__thumb__)
+#define __NR_OABI_SYSCALL_BASE	0x900000
+
+#if defined(__thumb__) || defined(__ARM_EABI__)
 #define __NR_SYSCALL_BASE	0
 #else
-#define __NR_SYSCALL_BASE	0x900000
+#define __NR_SYSCALL_BASE	__NR_OABI_SYSCALL_BASE
 #endif
 
 /*
@@ -373,13 +375,13 @@
 #define __sys1(x) __sys2(x)
 
 #ifndef __syscall
-#if defined(__thumb__)
-#define __syscall(name)					\
-	"push	{r7}\n\t"				\
-	"mov	r7, #" __sys1(__NR_##name) "\n\t"	\
-	"swi	0\n\t"					\
-	"pop	{r7}"
+#if defined(__thumb__) || defined(__ARM_EABI__)
+#define __SYS_REG(name) register long __sysreg __asm__("r7") = __NR_##name;
+#define __SYS_REG_LIST(regs...) "r" (__sysreg) , ##regs
+#define __syscall(name) "swi\t0"
 #else
+#define __SYS_REG(name)
+#define __SYS_REG_LIST(regs...) regs
 #define __syscall(name) "swi\t" __sys1(__NR_##name) ""
 #endif
 #endif
@@ -395,49 +397,50 @@ do {									\
 
 #define _syscall0(type,name)						\
 type name(void) {							\
+  __SYS_REG(name)							\
   register long __res_r0 __asm__("r0");					\
   long __res;								\
   __asm__ __volatile__ (						\
   __syscall(name)							\
 	: "=r" (__res_r0)						\
-	:								\
-	: "lr");							\
+	: __SYS_REG_LIST() );						\
   __res = __res_r0;							\
   __syscall_return(type,__res);						\
 }
 
 #define _syscall1(type,name,type1,arg1) 				\
 type name(type1 arg1) { 						\
+  __SYS_REG(name)							\
   register long __r0 __asm__("r0") = (long)arg1;			\
   register long __res_r0 __asm__("r0");					\
   long __res;								\
   __asm__ __volatile__ (						\
   __syscall(name)							\
 	: "=r" (__res_r0)						\
-	: "r" (__r0)							\
-	: "lr");							\
+	: __SYS_REG_LIST( "0" (__r0) ) );				\
   __res = __res_r0;							\
   __syscall_return(type,__res);						\
 }
 
 #define _syscall2(type,name,type1,arg1,type2,arg2)			\
 type name(type1 arg1,type2 arg2) {					\
+  __SYS_REG(name)							\
   register long __r0 __asm__("r0") = (long)arg1;			\
   register long __r1 __asm__("r1") = (long)arg2;			\
   register long __res_r0 __asm__("r0");					\
   long __res;								\
   __asm__ __volatile__ (						\
   __syscall(name)							\
 	: "=r" (__res_r0)						\
-	: "r" (__r0),"r" (__r1) 					\
-	: "lr");							\
+	: __SYS_REG_LIST( "0" (__r0), "r" (__r1) ) );			\
   __res = __res_r0;							\
   __syscall_return(type,__res);						\
 }
 
 
 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)		\
 type name(type1 arg1,type2 arg2,type3 arg3) {				\
+  __SYS_REG(name)							\
   register long __r0 __asm__("r0") = (long)arg1;			\
   register long __r1 __asm__("r1") = (long)arg2;			\
   register long __r2 __asm__("r2") = (long)arg3;			\
@@ -446,15 +449,15 @@ type name(type1 arg1,type2 arg2,type3 arg3) {				\
   __asm__ __volatile__ (						\
   __syscall(name)							\
 	: "=r" (__res_r0)						\
-	: "r" (__r0),"r" (__r1),"r" (__r2)				\
-	: "lr");							\
+	: __SYS_REG_LIST( "0" (__r0), "r" (__r1), "r" (__r2) ) );	\
   __res = __res_r0;							\
   __syscall_return(type,__res);						\
 }
 
 
 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)\
 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {		\
+  __SYS_REG(name)							\
   register long __r0 __asm__("r0") = (long)arg1;			\
   register long __r1 __asm__("r1") = (long)arg2;			\
   register long __r2 __asm__("r2") = (long)arg3;			\
@@ -464,15 +467,15 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {		\
   __asm__ __volatile__ (						\
   __syscall(name)							\
 	: "=r" (__res_r0)						\
-	: "r" (__r0),"r" (__r1),"r" (__r2),"r" (__r3)			\
-	: "lr");							\
+	: __SYS_REG_LIST( "0" (__r0), "r" (__r1), "r" (__r2), "r" (__r3) ) ); \
   __res = __res_r0;							\
   __syscall_return(type,__res);						\
 }
 
 
 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5)	\
 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) {	\
+  __SYS_REG(name)							\
   register long __r0 __asm__("r0") = (long)arg1;			\
   register long __r1 __asm__("r1") = (long)arg2;			\
   register long __r2 __asm__("r2") = (long)arg3;			\
@@ -483,14 +486,15 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) {	\
   __asm__ __volatile__ (						\
   __syscall(name)							\
 	: "=r" (__res_r0)						\
-	: "r" (__r0),"r" (__r1),"r" (__r2),"r" (__r3),"r" (__r4)	\
-	: "lr");							\
+	: __SYS_REG_LIST( "0" (__r0), "r" (__r1), "r" (__r2),		\
+			  "r" (__r3), "r" (__r4) ) );			\
   __res = __res_r0;							\
   __syscall_return(type,__res);						\
 }
 
 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5,type6,arg6)	\
 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6) {	\
+  __SYS_REG(name)							\
   register long __r0 __asm__("r0") = (long)arg1;			\
   register long __r1 __asm__("r1") = (long)arg2;			\
   register long __r2 __asm__("r2") = (long)arg3;			\
@@ -502,8 +506,8 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6
   __asm__ __volatile__ (						\
   __syscall(name)							\
 	: "=r" (__res_r0)						\
-	: "r" (__r0),"r" (__r1),"r" (__r2),"r" (__r3), "r" (__r4),"r" (__r5)		\
-	: "lr");							\
+	: __SYS_REG_LIST( "0" (__r0), "r" (__r1), "r" (__r2),		\
+			  "r" (__r3), "r" (__r4), "r" (__r5) ) );	\
   __res = __res_r0;							\
   __syscall_return(type,__res);						\
 }