f7e4217b00
This finally renames the thread_info field in task structure to stack, so that the assumptions about this field are gone and archs have more freedom about placing the thread_info structure. Nonbroken archs which have a proper thread pointer can do the access to both current thread and task structure via a single pointer. It'll allow for a few more cleanups of the fork code, from which e.g. ia64 could benefit. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> [akpm@linux-foundation.org: build fix] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Andi Kleen <ak@muc.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
99 lines
3.7 KiB
C
99 lines
3.7 KiB
C
/*
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* arch/xtensa/kernel/asm-offsets.c
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*
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* Generates definitions from c-type structures used by assembly sources.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2005 Tensilica Inc.
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*
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* Chris Zankel <chris@zankel.net>
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*/
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#include <asm/processor.h>
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#include <linux/types.h>
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#include <linux/stddef.h>
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#include <linux/thread_info.h>
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#include <linux/ptrace.h>
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#include <asm/ptrace.h>
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#include <asm/processor.h>
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#include <asm/uaccess.h>
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#define DEFINE(sym, val) asm volatile("\n->" #sym " %0 " #val : : "i" (val))
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#define BLANK() asm volatile("\n->" : : )
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int main(void)
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{
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/* struct pt_regs */
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DEFINE(PT_PC, offsetof (struct pt_regs, pc));
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DEFINE(PT_PS, offsetof (struct pt_regs, ps));
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DEFINE(PT_DEPC, offsetof (struct pt_regs, depc));
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DEFINE(PT_EXCCAUSE, offsetof (struct pt_regs, exccause));
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DEFINE(PT_EXCVADDR, offsetof (struct pt_regs, excvaddr));
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DEFINE(PT_DEBUGCAUSE, offsetof (struct pt_regs, debugcause));
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DEFINE(PT_WMASK, offsetof (struct pt_regs, wmask));
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DEFINE(PT_LBEG, offsetof (struct pt_regs, lbeg));
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DEFINE(PT_LEND, offsetof (struct pt_regs, lend));
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DEFINE(PT_LCOUNT, offsetof (struct pt_regs, lcount));
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DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
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DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
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DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
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DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
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DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1]));
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DEFINE(PT_AREG2, offsetof (struct pt_regs, areg[2]));
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DEFINE(PT_AREG3, offsetof (struct pt_regs, areg[3]));
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DEFINE(PT_AREG4, offsetof (struct pt_regs, areg[4]));
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DEFINE(PT_AREG5, offsetof (struct pt_regs, areg[5]));
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DEFINE(PT_AREG6, offsetof (struct pt_regs, areg[6]));
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DEFINE(PT_AREG7, offsetof (struct pt_regs, areg[7]));
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DEFINE(PT_AREG8, offsetof (struct pt_regs, areg[8]));
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DEFINE(PT_AREG9, offsetof (struct pt_regs, areg[9]));
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DEFINE(PT_AREG10, offsetof (struct pt_regs, areg[10]));
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DEFINE(PT_AREG11, offsetof (struct pt_regs, areg[11]));
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DEFINE(PT_AREG12, offsetof (struct pt_regs, areg[12]));
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DEFINE(PT_AREG13, offsetof (struct pt_regs, areg[13]));
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DEFINE(PT_AREG14, offsetof (struct pt_regs, areg[14]));
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DEFINE(PT_AREG15, offsetof (struct pt_regs, areg[15]));
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DEFINE(PT_WINDOWBASE, offsetof (struct pt_regs, windowbase));
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DEFINE(PT_WINDOWSTART, offsetof(struct pt_regs, windowstart));
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DEFINE(PT_SIZE, sizeof(struct pt_regs));
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DEFINE(PT_AREG_END, offsetof (struct pt_regs, areg[XCHAL_NUM_AREGS]));
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DEFINE(PT_USER_SIZE, offsetof(struct pt_regs, areg[XCHAL_NUM_AREGS]));
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BLANK();
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/* struct task_struct */
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DEFINE(TASK_PTRACE, offsetof (struct task_struct, ptrace));
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DEFINE(TASK_MM, offsetof (struct task_struct, mm));
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DEFINE(TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm));
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DEFINE(TASK_PID, offsetof (struct task_struct, pid));
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DEFINE(TASK_THREAD, offsetof (struct task_struct, thread));
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DEFINE(TASK_THREAD_INFO, offsetof (struct task_struct, stack));
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DEFINE(TASK_STRUCT_SIZE, sizeof (struct task_struct));
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BLANK();
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/* struct thread_info (offset from start_struct) */
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DEFINE(THREAD_RA, offsetof (struct task_struct, thread.ra));
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DEFINE(THREAD_SP, offsetof (struct task_struct, thread.sp));
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DEFINE(THREAD_CP_SAVE, offsetof (struct task_struct, thread.cp_save));
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DEFINE(THREAD_CURRENT_DS, offsetof (struct task_struct, thread.current_ds));
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BLANK();
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/* struct mm_struct */
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DEFINE(MM_USERS, offsetof(struct mm_struct, mm_users));
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DEFINE(MM_PGD, offsetof (struct mm_struct, pgd));
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DEFINE(MM_CONTEXT, offsetof (struct mm_struct, context));
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BLANK();
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DEFINE(PT_SINGLESTEP_BIT, PT_SINGLESTEP_BIT);
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/* constants */
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DEFINE(_CLONE_VM, CLONE_VM);
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DEFINE(_CLONE_UNTRACED, CLONE_UNTRACED);
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return 0;
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}
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