diff options
| author | Linus Torvalds <torvalds@athlon.transmeta.com> | 2002-02-04 19:08:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@athlon.transmeta.com> | 2002-02-04 19:08:33 -0800 |
| commit | 2d80cb2a5e022225b9512ccc98f7979cc4b92ce8 (patch) | |
| tree | a7f247ba424b5366ce443b3d9cb5b4c7f6538e3f /include/asm-mips/stackframe.h | |
| parent | 75b566af5cc6f64f9ab5b66608ff8ce18098a2b4 (diff) | |
v2.4.5.8 -> v2.4.5.9
- make sure "sync()" doesn't effectively lock up the machine by
overloading all the IO resources
- fix up some network memory allocations that don't wan tto wait on IO.
- merge with Alan (including MIPS update)
- Jeff Garzik: network driver updates.
- Al Viro: System V FS update (write capability, page cache, mondo cleanups)
- Kai Germaschewski: ISDN cleanups, TURBOPAM driver by Stelian Pop
- Ben Fennema: UDF update (time handling, i_blocks fix)
- Neil Brown: md error handling improvements, knfsd file handle compatibility
- Paul Mackerras: PPC update
- Jakub Jelinek: fix up kernel linker scripts to accept .rodata better
- Patrick Mochel: fix PME handling in pci_enable_wake()
- Chris Mason: reiserfs PF_MEMALLOC handling
Diffstat (limited to 'include/asm-mips/stackframe.h')
| -rw-r--r-- | include/asm-mips/stackframe.h | 85 |
1 files changed, 62 insertions, 23 deletions
diff --git a/include/asm-mips/stackframe.h b/include/asm-mips/stackframe.h index 490724b21a66..d46cecef9afc 100644 --- a/include/asm-mips/stackframe.h +++ b/include/asm-mips/stackframe.h @@ -1,13 +1,17 @@ /* - * include/asm-mips/stackframe.h + * 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. * - * Copyright (C) 1994, 1995, 1996 by Ralf Baechle and Paul M. Antoine. - * - * $Id: stackframe.h,v 1.10 1999/08/13 17:07:27 harald Exp $ + * Copyright (C) 1994, 1995, 1996, 2001 Ralf Baechle + * Copyright (C) 1994, 1995, 1996 Paul M. Antoine. */ -#ifndef __ASM_MIPS_STACKFRAME_H -#define __ASM_MIPS_STACKFRAME_H +#ifndef __ASM_STACKFRAME_H +#define __ASM_STACKFRAME_H +#include <asm/addrspace.h> +#include <asm/mipsregs.h> +#include <asm/processor.h> #include <asm/asm.h> #include <asm/offset.h> #include <linux/config.h> @@ -47,20 +51,45 @@ #define __str2(x) #x #define __str(x) __str2(x) -#define save_static(frame) \ - __asm__ __volatile__( \ - "sw\t$16,"__str(PT_R16)"(%0)\n\t" \ - "sw\t$17,"__str(PT_R17)"(%0)\n\t" \ - "sw\t$18,"__str(PT_R18)"(%0)\n\t" \ - "sw\t$19,"__str(PT_R19)"(%0)\n\t" \ - "sw\t$20,"__str(PT_R20)"(%0)\n\t" \ - "sw\t$21,"__str(PT_R21)"(%0)\n\t" \ - "sw\t$22,"__str(PT_R22)"(%0)\n\t" \ - "sw\t$23,"__str(PT_R23)"(%0)\n\t" \ - "sw\t$30,"__str(PT_R30)"(%0)\n\t" \ - : /* No outputs */ \ - : "r" (frame)) +#define save_static_function(symbol) \ +__asm__ ( \ + ".globl\t" #symbol "\n\t" \ + ".align\t2\n\t" \ + ".type\t" #symbol ", @function\n\t" \ + ".ent\t" #symbol ", 0\n" \ + #symbol":\n\t" \ + ".frame\t$29, 0, $31\n\t" \ + "sw\t$16,"__str(PT_R16)"($29)\t\t\t# save_static_function\n\t" \ + "sw\t$17,"__str(PT_R17)"($29)\n\t" \ + "sw\t$18,"__str(PT_R18)"($29)\n\t" \ + "sw\t$19,"__str(PT_R19)"($29)\n\t" \ + "sw\t$20,"__str(PT_R20)"($29)\n\t" \ + "sw\t$21,"__str(PT_R21)"($29)\n\t" \ + "sw\t$22,"__str(PT_R22)"($29)\n\t" \ + "sw\t$23,"__str(PT_R23)"($29)\n\t" \ + "sw\t$30,"__str(PT_R30)"($29)\n\t" \ + ".end\t" #symbol "\n\t" \ + ".size\t" #symbol",. - " #symbol) + +/* Used in declaration of save_static functions. */ +#define static_unused static __attribute__((unused)) + + +#ifdef CONFIG_SMP +# define GET_SAVED_SP \ + mfc0 k0, CP0_CONTEXT; \ + lui k1, %hi(kernelsp); \ + srl k0, k0, 23; \ + sll k0, k0, 2; \ + addu k1, k0; \ + lw k1, %lo(kernelsp)(k1); +#else +# define GET_SAVED_SP \ + lui k1, %hi(kernelsp); \ + lw k1, %lo(kernelsp)(k1); +#endif + #define SAVE_SOME \ .set push; \ .set reorder; \ @@ -71,13 +100,12 @@ move k1, sp; \ .set reorder; \ /* Called from user mode, new stack. */ \ - lui k1, %hi(kernelsp); \ - lw k1, %lo(kernelsp)(k1); \ + GET_SAVED_SP \ 8: \ move k0, sp; \ subu sp, k1, PT_SIZE; \ sw k0, PT_R29(sp); \ - sw $3, PT_R3(sp); \ + sw $3, PT_R3(sp); \ sw $0, PT_R0(sp); \ mfc0 v1, CP0_STATUS; \ sw $2, PT_R2(sp); \ @@ -208,6 +236,16 @@ #endif +#define RESTORE_SP \ + lw sp, PT_R29(sp); \ + +#define RESTORE_ALL \ + RESTORE_SOME; \ + RESTORE_AT; \ + RESTORE_TEMP; \ + RESTORE_STATIC; \ + RESTORE_SP + #define RESTORE_ALL_AND_RET \ RESTORE_SOME; \ RESTORE_AT; \ @@ -215,6 +253,7 @@ RESTORE_STATIC; \ RESTORE_SP_AND_RET + /* * Move to kernel mode and disable interrupts. * Set cp0 enable bit as sign that we're running on the kernel stack @@ -248,4 +287,4 @@ xori t0,0x1e; \ mtc0 t0,CP0_STATUS -#endif /* __ASM_MIPS_STACKFRAME_H */ +#endif /* __ASM_STACKFRAME_H */ |