forked from Minki/linux
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>
66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
/*
|
|
* This program is used to generate definitions needed by
|
|
* assembly language modules.
|
|
*
|
|
* We use the technique used in the OSF Mach kernel code:
|
|
* generate asm statements containing #defines,
|
|
* compile this file to assembler, and then extract the
|
|
* #defines from the assembly-language output.
|
|
*/
|
|
|
|
#include <linux/stddef.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/kernel_stat.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/hardirq.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/ptrace.h>
|
|
|
|
#define DEFINE(sym, val) \
|
|
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
|
|
|
|
#define BLANK() asm volatile("\n->" : : )
|
|
|
|
int main(void)
|
|
{
|
|
/* offsets into the task struct */
|
|
DEFINE(TASK_STATE, offsetof(struct task_struct, state));
|
|
DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
|
|
DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
|
|
DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked));
|
|
DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
|
|
DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack));
|
|
DEFINE(TASK_MM, offsetof(struct task_struct, mm));
|
|
DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
|
|
|
|
/* offsets into the irq_cpustat_t struct */
|
|
DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
|
|
|
|
/* offsets into the thread struct */
|
|
DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
|
|
DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
|
|
DEFINE(THREAD_CCR, offsetof(struct thread_struct, ccr));
|
|
|
|
/* offsets into the pt_regs struct */
|
|
DEFINE(LER0, offsetof(struct pt_regs, er0) - sizeof(long));
|
|
DEFINE(LER1, offsetof(struct pt_regs, er1) - sizeof(long));
|
|
DEFINE(LER2, offsetof(struct pt_regs, er2) - sizeof(long));
|
|
DEFINE(LER3, offsetof(struct pt_regs, er3) - sizeof(long));
|
|
DEFINE(LER4, offsetof(struct pt_regs, er4) - sizeof(long));
|
|
DEFINE(LER5, offsetof(struct pt_regs, er5) - sizeof(long));
|
|
DEFINE(LER6, offsetof(struct pt_regs, er6) - sizeof(long));
|
|
DEFINE(LORIG, offsetof(struct pt_regs, orig_er0) - sizeof(long));
|
|
DEFINE(LCCR, offsetof(struct pt_regs, ccr) - sizeof(long));
|
|
DEFINE(LVEC, offsetof(struct pt_regs, vector) - sizeof(long));
|
|
#if defined(__H8300S__)
|
|
DEFINE(LEXR, offsetof(struct pt_regs, exr) - sizeof(long));
|
|
#endif
|
|
DEFINE(LRET, offsetof(struct pt_regs, pc) - sizeof(long));
|
|
|
|
DEFINE(PT_PTRACED, PT_PTRACED);
|
|
DEFINE(PT_DTRACE, PT_DTRACE);
|
|
|
|
return 0;
|
|
}
|