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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-14 19:43:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-14 19:43:21 -0800 |
| commit | 8d5c315059460e665c804d5a9b641f7f0a1e9dd7 (patch) | |
| tree | b9c598b2ac7a4fd7cf121ce733b98b0f18b8a1df /arch/arm/kernel/entry-armv.S | |
| parent | a9df3d0f312f4b1aefec76ae5ee86cccbf7cd4e0 (diff) | |
| parent | 3f471126ee53feb5e9b210ea2f525ed3bb9b7a7f (diff) | |
| download | kernel-crypto-8d5c315059460e665c804d5a9b641f7f0a1e9dd7.tar.gz kernel-crypto-8d5c315059460e665c804d5a9b641f7f0a1e9dd7.tar.xz kernel-crypto-8d5c315059460e665c804d5a9b641f7f0a1e9dd7.zip | |
Merge master.kernel.org:/home/rmk/linux-2.6-arm
Diffstat (limited to 'arch/arm/kernel/entry-armv.S')
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index a52baedf626..874e6bb7940 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -3,6 +3,7 @@ * * Copyright (C) 1996,1997,1998 Russell King. * ARM700 fix by Matthew Godbolt (linux-user@willothewisp.demon.co.uk) + * nommu support by Hyok S. Choi (hyok.choi@samsung.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -104,14 +105,24 @@ common_invalid: /* * SVC mode handlers */ + +#if defined(CONFIG_AEABI) && (__LINUX_ARM_ARCH__ >= 5) +#define SPFIX(code...) code +#else +#define SPFIX(code...) +#endif + .macro svc_entry sub sp, sp, #S_FRAME_SIZE + SPFIX( tst sp, #4 ) + SPFIX( bicne sp, sp, #4 ) stmib sp, {r1 - r12} ldmia r0, {r1 - r3} add r5, sp, #S_SP @ here for interlock avoidance mov r4, #-1 @ "" "" "" "" add r0, sp, #S_FRAME_SIZE @ "" "" "" "" + SPFIX( addne r0, r0, #4 ) str r1, [sp] @ save the "real" r0 copied @ from the exception stack @@ -302,7 +313,14 @@ __pabt_svc: /* * User mode handlers + * + * EABI note: sp_svc is always 64-bit aligned here, so should S_FRAME_SIZE */ + +#if defined(CONFIG_AEABI) && (__LINUX_ARM_ARCH__ >= 5) && (S_FRAME_SIZE & 7) +#error "sizeof(struct pt_regs) must be a multiple of 8" +#endif + .macro usr_entry sub sp, sp, #S_FRAME_SIZE stmib sp, {r1 - r12} @@ -538,7 +556,11 @@ ENTRY(__switch_to) add ip, r1, #TI_CPU_SAVE ldr r3, [r2, #TI_TP_VALUE] stmia ip!, {r4 - sl, fp, sp, lr} @ Store most regs on stack +#ifndef CONFIG_MMU + add r2, r2, #TI_CPU_DOMAIN +#else ldr r6, [r2, #TI_CPU_DOMAIN]! +#endif #if __LINUX_ARM_ARCH__ >= 6 #ifdef CONFIG_CPU_MPCORE clrex @@ -556,7 +578,9 @@ ENTRY(__switch_to) mov r4, #0xffff0fff str r3, [r4, #-15] @ TLS val at 0xffff0ff0 #endif +#ifdef CONFIG_MMU mcr p15, 0, r6, c3, c0, 0 @ Set domain register +#endif #ifdef CONFIG_VFP @ Always disable VFP so we can lazily save/restore the old @ state. This occurs in the context of the previous thread. |