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>
49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
/*
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* Generate definitions needed by assembly language modules.
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* This code generates raw asm output which is post-processed to extract
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* and format the required data.
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*/
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#include <linux/sched.h>
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/* Use marker if you need to separate the values later */
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#define DEFINE(sym, val, marker) \
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asm volatile("\n->" #sym " %0 " #val " " #marker : : "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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DEFINE(__THREAD_info, offsetof(struct task_struct, stack),);
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DEFINE(__THREAD_ksp, offsetof(struct task_struct, thread.ksp),);
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DEFINE(__THREAD_per, offsetof(struct task_struct, thread.per_info),);
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DEFINE(__THREAD_mm_segment,
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offsetof(struct task_struct, thread.mm_segment),);
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BLANK();
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DEFINE(__TASK_pid, offsetof(struct task_struct, pid),);
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BLANK();
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DEFINE(__PER_atmid, offsetof(per_struct, lowcore.words.perc_atmid),);
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DEFINE(__PER_address, offsetof(per_struct, lowcore.words.address),);
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DEFINE(__PER_access_id, offsetof(per_struct, lowcore.words.access_id),);
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BLANK();
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DEFINE(__TI_task, offsetof(struct thread_info, task),);
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DEFINE(__TI_domain, offsetof(struct thread_info, exec_domain),);
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DEFINE(__TI_flags, offsetof(struct thread_info, flags),);
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DEFINE(__TI_cpu, offsetof(struct thread_info, cpu),);
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DEFINE(__TI_precount, offsetof(struct thread_info, preempt_count),);
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BLANK();
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DEFINE(__PT_ARGS, offsetof(struct pt_regs, args),);
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DEFINE(__PT_PSW, offsetof(struct pt_regs, psw),);
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DEFINE(__PT_GPRS, offsetof(struct pt_regs, gprs),);
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DEFINE(__PT_ORIG_GPR2, offsetof(struct pt_regs, orig_gpr2),);
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DEFINE(__PT_ILC, offsetof(struct pt_regs, ilc),);
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DEFINE(__PT_TRAP, offsetof(struct pt_regs, trap),);
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DEFINE(__PT_SIZE, sizeof(struct pt_regs),);
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BLANK();
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DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain),);
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DEFINE(__SF_GPRS, offsetof(struct stack_frame, gprs),);
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DEFINE(__SF_EMPTY, offsetof(struct stack_frame, empty1),);
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return 0;
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}
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