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linux/arch/mips/kernel/asm-offsets.c
Roman Zippel f7e4217b00 rename thread_info to stack 
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>
2007-05-09 12:30:56 -07:00

337 lines
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/*
* offset.c: Calculate pt_regs and task_struct offsets.
*
* Copyright (C) 1996 David S. Miller
* Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*
* Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
* Copyright (C) 2000 MIPS Technologies, Inc.
*/
#include <linux/compat.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <asm/ptrace.h>
#include <asm/processor.h>
#define text(t) __asm__("\n@@@" t)
#define _offset(type, member) (&(((type *)NULL)->member))
#define offset(string, ptr, member) \
__asm__("\n@@@" string "%0" : : "i" (_offset(ptr, member)))
#define constant(string, member) \
__asm__("\n@@@" string "%X0" : : "ri" (member))
#define size(string, size) \
__asm__("\n@@@" string "%0" : : "i" (sizeof(size)))
#define linefeed text("")
void output_ptreg_defines(void)
{
text("/* MIPS pt_regs offsets. */");
offset("#define PT_R0 ", struct pt_regs, regs[0]);
offset("#define PT_R1 ", struct pt_regs, regs[1]);
offset("#define PT_R2 ", struct pt_regs, regs[2]);
offset("#define PT_R3 ", struct pt_regs, regs[3]);
offset("#define PT_R4 ", struct pt_regs, regs[4]);
offset("#define PT_R5 ", struct pt_regs, regs[5]);
offset("#define PT_R6 ", struct pt_regs, regs[6]);
offset("#define PT_R7 ", struct pt_regs, regs[7]);
offset("#define PT_R8 ", struct pt_regs, regs[8]);
offset("#define PT_R9 ", struct pt_regs, regs[9]);
offset("#define PT_R10 ", struct pt_regs, regs[10]);
offset("#define PT_R11 ", struct pt_regs, regs[11]);
offset("#define PT_R12 ", struct pt_regs, regs[12]);
offset("#define PT_R13 ", struct pt_regs, regs[13]);
offset("#define PT_R14 ", struct pt_regs, regs[14]);
offset("#define PT_R15 ", struct pt_regs, regs[15]);
offset("#define PT_R16 ", struct pt_regs, regs[16]);
offset("#define PT_R17 ", struct pt_regs, regs[17]);
offset("#define PT_R18 ", struct pt_regs, regs[18]);
offset("#define PT_R19 ", struct pt_regs, regs[19]);
offset("#define PT_R20 ", struct pt_regs, regs[20]);
offset("#define PT_R21 ", struct pt_regs, regs[21]);
offset("#define PT_R22 ", struct pt_regs, regs[22]);
offset("#define PT_R23 ", struct pt_regs, regs[23]);
offset("#define PT_R24 ", struct pt_regs, regs[24]);
offset("#define PT_R25 ", struct pt_regs, regs[25]);
offset("#define PT_R26 ", struct pt_regs, regs[26]);
offset("#define PT_R27 ", struct pt_regs, regs[27]);
offset("#define PT_R28 ", struct pt_regs, regs[28]);
offset("#define PT_R29 ", struct pt_regs, regs[29]);
offset("#define PT_R30 ", struct pt_regs, regs[30]);
offset("#define PT_R31 ", struct pt_regs, regs[31]);
offset("#define PT_LO ", struct pt_regs, lo);
offset("#define PT_HI ", struct pt_regs, hi);
#ifdef CONFIG_CPU_HAS_SMARTMIPS
offset("#define PT_ACX ", struct pt_regs, acx);
#endif
offset("#define PT_EPC ", struct pt_regs, cp0_epc);
offset("#define PT_BVADDR ", struct pt_regs, cp0_badvaddr);
offset("#define PT_STATUS ", struct pt_regs, cp0_status);
offset("#define PT_CAUSE ", struct pt_regs, cp0_cause);
#ifdef CONFIG_MIPS_MT_SMTC
offset("#define PT_TCSTATUS ", struct pt_regs, cp0_tcstatus);
#endif /* CONFIG_MIPS_MT_SMTC */
size("#define PT_SIZE ", struct pt_regs);
linefeed;
}
void output_task_defines(void)
{
text("/* MIPS task_struct offsets. */");
offset("#define TASK_STATE ", struct task_struct, state);
offset("#define TASK_THREAD_INFO ", struct task_struct, stack);
offset("#define TASK_FLAGS ", struct task_struct, flags);
offset("#define TASK_MM ", struct task_struct, mm);
offset("#define TASK_PID ", struct task_struct, pid);
size( "#define TASK_STRUCT_SIZE ", struct task_struct);
linefeed;
}
void output_thread_info_defines(void)
{
text("/* MIPS thread_info offsets. */");
offset("#define TI_TASK ", struct thread_info, task);
offset("#define TI_EXEC_DOMAIN ", struct thread_info, exec_domain);
offset("#define TI_FLAGS ", struct thread_info, flags);
offset("#define TI_TP_VALUE ", struct thread_info, tp_value);
offset("#define TI_CPU ", struct thread_info, cpu);
offset("#define TI_PRE_COUNT ", struct thread_info, preempt_count);
offset("#define TI_ADDR_LIMIT ", struct thread_info, addr_limit);
offset("#define TI_RESTART_BLOCK ", struct thread_info, restart_block);
offset("#define TI_REGS ", struct thread_info, regs);
constant("#define _THREAD_SIZE ", THREAD_SIZE);
constant("#define _THREAD_MASK ", THREAD_MASK);
linefeed;
}
void output_thread_defines(void)
{
text("/* MIPS specific thread_struct offsets. */");
offset("#define THREAD_REG16 ", struct task_struct, thread.reg16);
offset("#define THREAD_REG17 ", struct task_struct, thread.reg17);
offset("#define THREAD_REG18 ", struct task_struct, thread.reg18);
offset("#define THREAD_REG19 ", struct task_struct, thread.reg19);
offset("#define THREAD_REG20 ", struct task_struct, thread.reg20);
offset("#define THREAD_REG21 ", struct task_struct, thread.reg21);
offset("#define THREAD_REG22 ", struct task_struct, thread.reg22);
offset("#define THREAD_REG23 ", struct task_struct, thread.reg23);
offset("#define THREAD_REG29 ", struct task_struct, thread.reg29);
offset("#define THREAD_REG30 ", struct task_struct, thread.reg30);
offset("#define THREAD_REG31 ", struct task_struct, thread.reg31);
offset("#define THREAD_STATUS ", struct task_struct,
thread.cp0_status);
offset("#define THREAD_FPU ", struct task_struct, thread.fpu);
offset("#define THREAD_BVADDR ", struct task_struct, \
thread.cp0_badvaddr);
offset("#define THREAD_BUADDR ", struct task_struct, \
thread.cp0_baduaddr);
offset("#define THREAD_ECODE ", struct task_struct, \
thread.error_code);
offset("#define THREAD_TRAPNO ", struct task_struct, thread.trap_no);
offset("#define THREAD_MFLAGS ", struct task_struct, thread.mflags);
offset("#define THREAD_TRAMP ", struct task_struct, \
thread.irix_trampoline);
offset("#define THREAD_OLDCTX ", struct task_struct, \
thread.irix_oldctx);
linefeed;
}
void output_thread_fpu_defines(void)
{
offset("#define THREAD_FPR0 ",
struct task_struct, thread.fpu.fpr[0]);
offset("#define THREAD_FPR1 ",
struct task_struct, thread.fpu.fpr[1]);
offset("#define THREAD_FPR2 ",
struct task_struct, thread.fpu.fpr[2]);
offset("#define THREAD_FPR3 ",
struct task_struct, thread.fpu.fpr[3]);
offset("#define THREAD_FPR4 ",
struct task_struct, thread.fpu.fpr[4]);
offset("#define THREAD_FPR5 ",
struct task_struct, thread.fpu.fpr[5]);
offset("#define THREAD_FPR6 ",
struct task_struct, thread.fpu.fpr[6]);
offset("#define THREAD_FPR7 ",
struct task_struct, thread.fpu.fpr[7]);
offset("#define THREAD_FPR8 ",
struct task_struct, thread.fpu.fpr[8]);
offset("#define THREAD_FPR9 ",
struct task_struct, thread.fpu.fpr[9]);
offset("#define THREAD_FPR10 ",
struct task_struct, thread.fpu.fpr[10]);
offset("#define THREAD_FPR11 ",
struct task_struct, thread.fpu.fpr[11]);
offset("#define THREAD_FPR12 ",
struct task_struct, thread.fpu.fpr[12]);
offset("#define THREAD_FPR13 ",
struct task_struct, thread.fpu.fpr[13]);
offset("#define THREAD_FPR14 ",
struct task_struct, thread.fpu.fpr[14]);
offset("#define THREAD_FPR15 ",
struct task_struct, thread.fpu.fpr[15]);
offset("#define THREAD_FPR16 ",
struct task_struct, thread.fpu.fpr[16]);
offset("#define THREAD_FPR17 ",
struct task_struct, thread.fpu.fpr[17]);
offset("#define THREAD_FPR18 ",
struct task_struct, thread.fpu.fpr[18]);
offset("#define THREAD_FPR19 ",
struct task_struct, thread.fpu.fpr[19]);
offset("#define THREAD_FPR20 ",
struct task_struct, thread.fpu.fpr[20]);
offset("#define THREAD_FPR21 ",
struct task_struct, thread.fpu.fpr[21]);
offset("#define THREAD_FPR22 ",
struct task_struct, thread.fpu.fpr[22]);
offset("#define THREAD_FPR23 ",
struct task_struct, thread.fpu.fpr[23]);
offset("#define THREAD_FPR24 ",
struct task_struct, thread.fpu.fpr[24]);
offset("#define THREAD_FPR25 ",
struct task_struct, thread.fpu.fpr[25]);
offset("#define THREAD_FPR26 ",
struct task_struct, thread.fpu.fpr[26]);
offset("#define THREAD_FPR27 ",
struct task_struct, thread.fpu.fpr[27]);
offset("#define THREAD_FPR28 ",
struct task_struct, thread.fpu.fpr[28]);
offset("#define THREAD_FPR29 ",
struct task_struct, thread.fpu.fpr[29]);
offset("#define THREAD_FPR30 ",
struct task_struct, thread.fpu.fpr[30]);
offset("#define THREAD_FPR31 ",
struct task_struct, thread.fpu.fpr[31]);
offset("#define THREAD_FCR31 ",
struct task_struct, thread.fpu.fcr31);
linefeed;
}
void output_mm_defines(void)
{
text("/* Size of struct page */");
size("#define STRUCT_PAGE_SIZE ", struct page);
linefeed;
text("/* Linux mm_struct offsets. */");
offset("#define MM_USERS ", struct mm_struct, mm_users);
offset("#define MM_PGD ", struct mm_struct, pgd);
offset("#define MM_CONTEXT ", struct mm_struct, context);
linefeed;
constant("#define _PAGE_SIZE ", PAGE_SIZE);
constant("#define _PAGE_SHIFT ", PAGE_SHIFT);
linefeed;
constant("#define _PGD_T_SIZE ", sizeof(pgd_t));
constant("#define _PMD_T_SIZE ", sizeof(pmd_t));
constant("#define _PTE_T_SIZE ", sizeof(pte_t));
linefeed;
constant("#define _PGD_T_LOG2 ", PGD_T_LOG2);
constant("#define _PMD_T_LOG2 ", PMD_T_LOG2);
constant("#define _PTE_T_LOG2 ", PTE_T_LOG2);
linefeed;
constant("#define _PMD_SHIFT ", PMD_SHIFT);
constant("#define _PGDIR_SHIFT ", PGDIR_SHIFT);
linefeed;
constant("#define _PTRS_PER_PGD ", PTRS_PER_PGD);
constant("#define _PTRS_PER_PMD ", PTRS_PER_PMD);
constant("#define _PTRS_PER_PTE ", PTRS_PER_PTE);
linefeed;
}
#ifdef CONFIG_32BIT
void output_sc_defines(void)
{
text("/* Linux sigcontext offsets. */");
offset("#define SC_REGS ", struct sigcontext, sc_regs);
offset("#define SC_FPREGS ", struct sigcontext, sc_fpregs);
offset("#define SC_ACX ", struct sigcontext, sc_acx);
offset("#define SC_MDHI ", struct sigcontext, sc_mdhi);
offset("#define SC_MDLO ", struct sigcontext, sc_mdlo);
offset("#define SC_PC ", struct sigcontext, sc_pc);
offset("#define SC_FPC_CSR ", struct sigcontext, sc_fpc_csr);
offset("#define SC_FPC_EIR ", struct sigcontext, sc_fpc_eir);
offset("#define SC_HI1 ", struct sigcontext, sc_hi1);
offset("#define SC_LO1 ", struct sigcontext, sc_lo1);
offset("#define SC_HI2 ", struct sigcontext, sc_hi2);
offset("#define SC_LO2 ", struct sigcontext, sc_lo2);
offset("#define SC_HI3 ", struct sigcontext, sc_hi3);
offset("#define SC_LO3 ", struct sigcontext, sc_lo3);
linefeed;
}
#endif
#ifdef CONFIG_64BIT
void output_sc_defines(void)
{
text("/* Linux sigcontext offsets. */");
offset("#define SC_REGS ", struct sigcontext, sc_regs);
offset("#define SC_FPREGS ", struct sigcontext, sc_fpregs);
offset("#define SC_MDHI ", struct sigcontext, sc_mdhi);
offset("#define SC_MDLO ", struct sigcontext, sc_mdlo);
offset("#define SC_PC ", struct sigcontext, sc_pc);
offset("#define SC_FPC_CSR ", struct sigcontext, sc_fpc_csr);
linefeed;
}
#endif
#ifdef CONFIG_MIPS32_COMPAT
void output_sc32_defines(void)
{
text("/* Linux 32-bit sigcontext offsets. */");
offset("#define SC32_FPREGS ", struct sigcontext32, sc_fpregs);
offset("#define SC32_FPC_CSR ", struct sigcontext32, sc_fpc_csr);
offset("#define SC32_FPC_EIR ", struct sigcontext32, sc_fpc_eir);
linefeed;
}
#endif
void output_signal_defined(void)
{
text("/* Linux signal numbers. */");
constant("#define _SIGHUP ", SIGHUP);
constant("#define _SIGINT ", SIGINT);
constant("#define _SIGQUIT ", SIGQUIT);
constant("#define _SIGILL ", SIGILL);
constant("#define _SIGTRAP ", SIGTRAP);
constant("#define _SIGIOT ", SIGIOT);
constant("#define _SIGABRT ", SIGABRT);
constant("#define _SIGEMT ", SIGEMT);
constant("#define _SIGFPE ", SIGFPE);
constant("#define _SIGKILL ", SIGKILL);
constant("#define _SIGBUS ", SIGBUS);
constant("#define _SIGSEGV ", SIGSEGV);
constant("#define _SIGSYS ", SIGSYS);
constant("#define _SIGPIPE ", SIGPIPE);
constant("#define _SIGALRM ", SIGALRM);
constant("#define _SIGTERM ", SIGTERM);
constant("#define _SIGUSR1 ", SIGUSR1);
constant("#define _SIGUSR2 ", SIGUSR2);
constant("#define _SIGCHLD ", SIGCHLD);
constant("#define _SIGPWR ", SIGPWR);
constant("#define _SIGWINCH ", SIGWINCH);
constant("#define _SIGURG ", SIGURG);
constant("#define _SIGIO ", SIGIO);
constant("#define _SIGSTOP ", SIGSTOP);
constant("#define _SIGTSTP ", SIGTSTP);
constant("#define _SIGCONT ", SIGCONT);
constant("#define _SIGTTIN ", SIGTTIN);
constant("#define _SIGTTOU ", SIGTTOU);
constant("#define _SIGVTALRM ", SIGVTALRM);
constant("#define _SIGPROF ", SIGPROF);
constant("#define _SIGXCPU ", SIGXCPU);
constant("#define _SIGXFSZ ", SIGXFSZ);
linefeed;
}
void output_irq_cpustat_t_defines(void)
{
text("/* Linux irq_cpustat_t offsets. */");
offset("#define IC_SOFTIRQ_PENDING ", irq_cpustat_t, __softirq_pending);
size("#define IC_IRQ_CPUSTAT_T ", irq_cpustat_t);
linefeed;
}
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