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linux/arch/parisc/kernel/asm-offsets.c
Sven Schnelle 5fb1d3ce3e parisc: entry: set W bit for !compat tasks in syscall_restore_rfi() 
When the kernel leaves to userspace via syscall_restore_rfi(), the
W bit is not set in the new PSW. This doesn't cause any problems
because there's no 64 bit userspace for parisc. Simple static binaries
are usually loaded at addresses way below the 32 bit limit so the W bit
doesn't matter.

Fix this by setting the W bit when TIF_32BIT is not set.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Cc: stable@vger.kernel.org
Signed-off-by: Helge Deller <deller@gmx.de>
2025-10-16 01:37:39 +02:00

291 lines
15 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Generate definitions needed by assembly language modules.
* This code generates raw asm output which is post-processed to extract
* and format the required data.
*
* Copyright (C) 2000-2001 John Marvin <jsm at parisc-linux.org>
* Copyright (C) 2000 David Huggins-Daines <dhd with pobox.org>
* Copyright (C) 2000 Sam Creasey <sammy@sammy.net>
* Copyright (C) 2000 Grant Grundler <grundler with parisc-linux.org>
* Copyright (C) 2001 Paul Bame <bame at parisc-linux.org>
* Copyright (C) 2001 Richard Hirst <rhirst at parisc-linux.org>
* Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
* Copyright (C) 2003 James Bottomley <jejb at parisc-linux.org>
*/
#define COMPILE_OFFSETS
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/thread_info.h>
#include <linux/ptrace.h>
#include <linux/hardirq.h>
#include <linux/kbuild.h>
#include <linux/pgtable.h>
#include <asm/assembly.h>
#include <asm/ptrace.h>
#include <asm/processor.h>
#include <asm/pdc.h>
#include <uapi/asm/sigcontext.h>
#include <asm/ucontext.h>
#include <asm/rt_sigframe.h>
#include <linux/uaccess.h>
#include "signal32.h"
/* Add FRAME_SIZE to the size x and align it to y. All definitions
* that use align_frame will include space for a frame.
*/
#define align_frame(x,y) (((x)+FRAME_SIZE+(y)-1) - (((x)+(y)-1)%(y)))
int main(void)
{
DEFINE(TASK_TI_FLAGS, offsetof(struct task_struct, thread_info.flags));
#ifdef CONFIG_SMP
DEFINE(TASK_TI_CPU, offsetof(struct task_struct, thread_info.cpu));
#endif
DEFINE(TASK_STACK, offsetof(struct task_struct, stack));
DEFINE(TASK_PAGEFAULT_DISABLED, offsetof(struct task_struct, pagefault_disabled));
BLANK();
DEFINE(TASK_REGS, offsetof(struct task_struct, thread.regs));
DEFINE(TASK_PT_PSW, offsetof(struct task_struct, thread.regs.gr[ 0]));
DEFINE(TASK_PT_GR1, offsetof(struct task_struct, thread.regs.gr[ 1]));
DEFINE(TASK_PT_GR2, offsetof(struct task_struct, thread.regs.gr[ 2]));
DEFINE(TASK_PT_GR3, offsetof(struct task_struct, thread.regs.gr[ 3]));
DEFINE(TASK_PT_GR4, offsetof(struct task_struct, thread.regs.gr[ 4]));
DEFINE(TASK_PT_GR5, offsetof(struct task_struct, thread.regs.gr[ 5]));
DEFINE(TASK_PT_GR6, offsetof(struct task_struct, thread.regs.gr[ 6]));
DEFINE(TASK_PT_GR7, offsetof(struct task_struct, thread.regs.gr[ 7]));
DEFINE(TASK_PT_GR8, offsetof(struct task_struct, thread.regs.gr[ 8]));
DEFINE(TASK_PT_GR9, offsetof(struct task_struct, thread.regs.gr[ 9]));
DEFINE(TASK_PT_GR10, offsetof(struct task_struct, thread.regs.gr[10]));
DEFINE(TASK_PT_GR11, offsetof(struct task_struct, thread.regs.gr[11]));
DEFINE(TASK_PT_GR12, offsetof(struct task_struct, thread.regs.gr[12]));
DEFINE(TASK_PT_GR13, offsetof(struct task_struct, thread.regs.gr[13]));
DEFINE(TASK_PT_GR14, offsetof(struct task_struct, thread.regs.gr[14]));
DEFINE(TASK_PT_GR15, offsetof(struct task_struct, thread.regs.gr[15]));
DEFINE(TASK_PT_GR16, offsetof(struct task_struct, thread.regs.gr[16]));
DEFINE(TASK_PT_GR17, offsetof(struct task_struct, thread.regs.gr[17]));
DEFINE(TASK_PT_GR18, offsetof(struct task_struct, thread.regs.gr[18]));
DEFINE(TASK_PT_GR19, offsetof(struct task_struct, thread.regs.gr[19]));
DEFINE(TASK_PT_GR20, offsetof(struct task_struct, thread.regs.gr[20]));
DEFINE(TASK_PT_GR21, offsetof(struct task_struct, thread.regs.gr[21]));
DEFINE(TASK_PT_GR22, offsetof(struct task_struct, thread.regs.gr[22]));
DEFINE(TASK_PT_GR23, offsetof(struct task_struct, thread.regs.gr[23]));
DEFINE(TASK_PT_GR24, offsetof(struct task_struct, thread.regs.gr[24]));
DEFINE(TASK_PT_GR25, offsetof(struct task_struct, thread.regs.gr[25]));
DEFINE(TASK_PT_GR26, offsetof(struct task_struct, thread.regs.gr[26]));
DEFINE(TASK_PT_GR27, offsetof(struct task_struct, thread.regs.gr[27]));
DEFINE(TASK_PT_GR28, offsetof(struct task_struct, thread.regs.gr[28]));
DEFINE(TASK_PT_GR29, offsetof(struct task_struct, thread.regs.gr[29]));
DEFINE(TASK_PT_GR30, offsetof(struct task_struct, thread.regs.gr[30]));
DEFINE(TASK_PT_GR31, offsetof(struct task_struct, thread.regs.gr[31]));
DEFINE(TASK_PT_FR0, offsetof(struct task_struct, thread.regs.fr[ 0]));
DEFINE(TASK_PT_FR1, offsetof(struct task_struct, thread.regs.fr[ 1]));
DEFINE(TASK_PT_FR2, offsetof(struct task_struct, thread.regs.fr[ 2]));
DEFINE(TASK_PT_FR3, offsetof(struct task_struct, thread.regs.fr[ 3]));
DEFINE(TASK_PT_FR4, offsetof(struct task_struct, thread.regs.fr[ 4]));
DEFINE(TASK_PT_FR5, offsetof(struct task_struct, thread.regs.fr[ 5]));
DEFINE(TASK_PT_FR6, offsetof(struct task_struct, thread.regs.fr[ 6]));
DEFINE(TASK_PT_FR7, offsetof(struct task_struct, thread.regs.fr[ 7]));
DEFINE(TASK_PT_FR8, offsetof(struct task_struct, thread.regs.fr[ 8]));
DEFINE(TASK_PT_FR9, offsetof(struct task_struct, thread.regs.fr[ 9]));
DEFINE(TASK_PT_FR10, offsetof(struct task_struct, thread.regs.fr[10]));
DEFINE(TASK_PT_FR11, offsetof(struct task_struct, thread.regs.fr[11]));
DEFINE(TASK_PT_FR12, offsetof(struct task_struct, thread.regs.fr[12]));
DEFINE(TASK_PT_FR13, offsetof(struct task_struct, thread.regs.fr[13]));
DEFINE(TASK_PT_FR14, offsetof(struct task_struct, thread.regs.fr[14]));
DEFINE(TASK_PT_FR15, offsetof(struct task_struct, thread.regs.fr[15]));
DEFINE(TASK_PT_FR16, offsetof(struct task_struct, thread.regs.fr[16]));
DEFINE(TASK_PT_FR17, offsetof(struct task_struct, thread.regs.fr[17]));
DEFINE(TASK_PT_FR18, offsetof(struct task_struct, thread.regs.fr[18]));
DEFINE(TASK_PT_FR19, offsetof(struct task_struct, thread.regs.fr[19]));
DEFINE(TASK_PT_FR20, offsetof(struct task_struct, thread.regs.fr[20]));
DEFINE(TASK_PT_FR21, offsetof(struct task_struct, thread.regs.fr[21]));
DEFINE(TASK_PT_FR22, offsetof(struct task_struct, thread.regs.fr[22]));
DEFINE(TASK_PT_FR23, offsetof(struct task_struct, thread.regs.fr[23]));
DEFINE(TASK_PT_FR24, offsetof(struct task_struct, thread.regs.fr[24]));
DEFINE(TASK_PT_FR25, offsetof(struct task_struct, thread.regs.fr[25]));
DEFINE(TASK_PT_FR26, offsetof(struct task_struct, thread.regs.fr[26]));
DEFINE(TASK_PT_FR27, offsetof(struct task_struct, thread.regs.fr[27]));
DEFINE(TASK_PT_FR28, offsetof(struct task_struct, thread.regs.fr[28]));
DEFINE(TASK_PT_FR29, offsetof(struct task_struct, thread.regs.fr[29]));
DEFINE(TASK_PT_FR30, offsetof(struct task_struct, thread.regs.fr[30]));
DEFINE(TASK_PT_FR31, offsetof(struct task_struct, thread.regs.fr[31]));
DEFINE(TASK_PT_SR0, offsetof(struct task_struct, thread.regs.sr[ 0]));
DEFINE(TASK_PT_SR1, offsetof(struct task_struct, thread.regs.sr[ 1]));
DEFINE(TASK_PT_SR2, offsetof(struct task_struct, thread.regs.sr[ 2]));
DEFINE(TASK_PT_SR3, offsetof(struct task_struct, thread.regs.sr[ 3]));
DEFINE(TASK_PT_SR4, offsetof(struct task_struct, thread.regs.sr[ 4]));
DEFINE(TASK_PT_SR5, offsetof(struct task_struct, thread.regs.sr[ 5]));
DEFINE(TASK_PT_SR6, offsetof(struct task_struct, thread.regs.sr[ 6]));
DEFINE(TASK_PT_SR7, offsetof(struct task_struct, thread.regs.sr[ 7]));
DEFINE(TASK_PT_IASQ0, offsetof(struct task_struct, thread.regs.iasq[0]));
DEFINE(TASK_PT_IASQ1, offsetof(struct task_struct, thread.regs.iasq[1]));
DEFINE(TASK_PT_IAOQ0, offsetof(struct task_struct, thread.regs.iaoq[0]));
DEFINE(TASK_PT_IAOQ1, offsetof(struct task_struct, thread.regs.iaoq[1]));
DEFINE(TASK_PT_CR27, offsetof(struct task_struct, thread.regs.cr27));
DEFINE(TASK_PT_ORIG_R28, offsetof(struct task_struct, thread.regs.orig_r28));
DEFINE(TASK_PT_KSP, offsetof(struct task_struct, thread.regs.ksp));
DEFINE(TASK_PT_KPC, offsetof(struct task_struct, thread.regs.kpc));
DEFINE(TASK_PT_SAR, offsetof(struct task_struct, thread.regs.sar));
DEFINE(TASK_PT_IIR, offsetof(struct task_struct, thread.regs.iir));
DEFINE(TASK_PT_ISR, offsetof(struct task_struct, thread.regs.isr));
DEFINE(TASK_PT_IOR, offsetof(struct task_struct, thread.regs.ior));
BLANK();
DEFINE(PT_PSW, offsetof(struct pt_regs, gr[ 0]));
DEFINE(PT_GR1, offsetof(struct pt_regs, gr[ 1]));
DEFINE(PT_GR2, offsetof(struct pt_regs, gr[ 2]));
DEFINE(PT_GR3, offsetof(struct pt_regs, gr[ 3]));
DEFINE(PT_GR4, offsetof(struct pt_regs, gr[ 4]));
DEFINE(PT_GR5, offsetof(struct pt_regs, gr[ 5]));
DEFINE(PT_GR6, offsetof(struct pt_regs, gr[ 6]));
DEFINE(PT_GR7, offsetof(struct pt_regs, gr[ 7]));
DEFINE(PT_GR8, offsetof(struct pt_regs, gr[ 8]));
DEFINE(PT_GR9, offsetof(struct pt_regs, gr[ 9]));
DEFINE(PT_GR10, offsetof(struct pt_regs, gr[10]));
DEFINE(PT_GR11, offsetof(struct pt_regs, gr[11]));
DEFINE(PT_GR12, offsetof(struct pt_regs, gr[12]));
DEFINE(PT_GR13, offsetof(struct pt_regs, gr[13]));
DEFINE(PT_GR14, offsetof(struct pt_regs, gr[14]));
DEFINE(PT_GR15, offsetof(struct pt_regs, gr[15]));
DEFINE(PT_GR16, offsetof(struct pt_regs, gr[16]));
DEFINE(PT_GR17, offsetof(struct pt_regs, gr[17]));
DEFINE(PT_GR18, offsetof(struct pt_regs, gr[18]));
DEFINE(PT_GR19, offsetof(struct pt_regs, gr[19]));
DEFINE(PT_GR20, offsetof(struct pt_regs, gr[20]));
DEFINE(PT_GR21, offsetof(struct pt_regs, gr[21]));
DEFINE(PT_GR22, offsetof(struct pt_regs, gr[22]));
DEFINE(PT_GR23, offsetof(struct pt_regs, gr[23]));
DEFINE(PT_GR24, offsetof(struct pt_regs, gr[24]));
DEFINE(PT_GR25, offsetof(struct pt_regs, gr[25]));
DEFINE(PT_GR26, offsetof(struct pt_regs, gr[26]));
DEFINE(PT_GR27, offsetof(struct pt_regs, gr[27]));
DEFINE(PT_GR28, offsetof(struct pt_regs, gr[28]));
DEFINE(PT_GR29, offsetof(struct pt_regs, gr[29]));
DEFINE(PT_GR30, offsetof(struct pt_regs, gr[30]));
DEFINE(PT_GR31, offsetof(struct pt_regs, gr[31]));
DEFINE(PT_FR0, offsetof(struct pt_regs, fr[ 0]));
DEFINE(PT_FR1, offsetof(struct pt_regs, fr[ 1]));
DEFINE(PT_FR2, offsetof(struct pt_regs, fr[ 2]));
DEFINE(PT_FR3, offsetof(struct pt_regs, fr[ 3]));
DEFINE(PT_FR4, offsetof(struct pt_regs, fr[ 4]));
DEFINE(PT_FR5, offsetof(struct pt_regs, fr[ 5]));
DEFINE(PT_FR6, offsetof(struct pt_regs, fr[ 6]));
DEFINE(PT_FR7, offsetof(struct pt_regs, fr[ 7]));
DEFINE(PT_FR8, offsetof(struct pt_regs, fr[ 8]));
DEFINE(PT_FR9, offsetof(struct pt_regs, fr[ 9]));
DEFINE(PT_FR10, offsetof(struct pt_regs, fr[10]));
DEFINE(PT_FR11, offsetof(struct pt_regs, fr[11]));
DEFINE(PT_FR12, offsetof(struct pt_regs, fr[12]));
DEFINE(PT_FR13, offsetof(struct pt_regs, fr[13]));
DEFINE(PT_FR14, offsetof(struct pt_regs, fr[14]));
DEFINE(PT_FR15, offsetof(struct pt_regs, fr[15]));
DEFINE(PT_FR16, offsetof(struct pt_regs, fr[16]));
DEFINE(PT_FR17, offsetof(struct pt_regs, fr[17]));
DEFINE(PT_FR18, offsetof(struct pt_regs, fr[18]));
DEFINE(PT_FR19, offsetof(struct pt_regs, fr[19]));
DEFINE(PT_FR20, offsetof(struct pt_regs, fr[20]));
DEFINE(PT_FR21, offsetof(struct pt_regs, fr[21]));
DEFINE(PT_FR22, offsetof(struct pt_regs, fr[22]));
DEFINE(PT_FR23, offsetof(struct pt_regs, fr[23]));
DEFINE(PT_FR24, offsetof(struct pt_regs, fr[24]));
DEFINE(PT_FR25, offsetof(struct pt_regs, fr[25]));
DEFINE(PT_FR26, offsetof(struct pt_regs, fr[26]));
DEFINE(PT_FR27, offsetof(struct pt_regs, fr[27]));
DEFINE(PT_FR28, offsetof(struct pt_regs, fr[28]));
DEFINE(PT_FR29, offsetof(struct pt_regs, fr[29]));
DEFINE(PT_FR30, offsetof(struct pt_regs, fr[30]));
DEFINE(PT_FR31, offsetof(struct pt_regs, fr[31]));
DEFINE(PT_SR0, offsetof(struct pt_regs, sr[ 0]));
DEFINE(PT_SR1, offsetof(struct pt_regs, sr[ 1]));
DEFINE(PT_SR2, offsetof(struct pt_regs, sr[ 2]));
DEFINE(PT_SR3, offsetof(struct pt_regs, sr[ 3]));
DEFINE(PT_SR4, offsetof(struct pt_regs, sr[ 4]));
DEFINE(PT_SR5, offsetof(struct pt_regs, sr[ 5]));
DEFINE(PT_SR6, offsetof(struct pt_regs, sr[ 6]));
DEFINE(PT_SR7, offsetof(struct pt_regs, sr[ 7]));
DEFINE(PT_IASQ0, offsetof(struct pt_regs, iasq[0]));
DEFINE(PT_IASQ1, offsetof(struct pt_regs, iasq[1]));
DEFINE(PT_IAOQ0, offsetof(struct pt_regs, iaoq[0]));
DEFINE(PT_IAOQ1, offsetof(struct pt_regs, iaoq[1]));
DEFINE(PT_CR27, offsetof(struct pt_regs, cr27));
DEFINE(PT_ORIG_R28, offsetof(struct pt_regs, orig_r28));
DEFINE(PT_KSP, offsetof(struct pt_regs, ksp));
DEFINE(PT_KPC, offsetof(struct pt_regs, kpc));
DEFINE(PT_SAR, offsetof(struct pt_regs, sar));
DEFINE(PT_IIR, offsetof(struct pt_regs, iir));
DEFINE(PT_ISR, offsetof(struct pt_regs, isr));
DEFINE(PT_IOR, offsetof(struct pt_regs, ior));
/* PT_SZ_ALGN includes space for a stack frame. */
DEFINE(PT_SZ_ALGN, align_frame(sizeof(struct pt_regs), FRAME_ALIGN));
BLANK();
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_PRE_COUNT, offsetof(struct task_struct, thread_info.preempt_count));
BLANK();
DEFINE(ASM_SIGFRAME_SIZE, PARISC_RT_SIGFRAME_SIZE);
DEFINE(SIGFRAME_CONTEXT_REGS, offsetof(struct rt_sigframe, uc.uc_mcontext) - PARISC_RT_SIGFRAME_SIZE);
#ifdef CONFIG_64BIT
DEFINE(ASM_SIGFRAME_SIZE32, PARISC_RT_SIGFRAME_SIZE32);
DEFINE(SIGFRAME_CONTEXT_REGS32, offsetof(struct compat_rt_sigframe, uc.uc_mcontext) - PARISC_RT_SIGFRAME_SIZE32);
#else
DEFINE(ASM_SIGFRAME_SIZE32, PARISC_RT_SIGFRAME_SIZE);
DEFINE(SIGFRAME_CONTEXT_REGS32, offsetof(struct rt_sigframe, uc.uc_mcontext) - PARISC_RT_SIGFRAME_SIZE);
#endif
BLANK();
DEFINE(ICACHE_BASE, offsetof(struct pdc_cache_info, ic_base));
DEFINE(ICACHE_STRIDE, offsetof(struct pdc_cache_info, ic_stride));
DEFINE(ICACHE_COUNT, offsetof(struct pdc_cache_info, ic_count));
DEFINE(ICACHE_LOOP, offsetof(struct pdc_cache_info, ic_loop));
DEFINE(DCACHE_BASE, offsetof(struct pdc_cache_info, dc_base));
DEFINE(DCACHE_STRIDE, offsetof(struct pdc_cache_info, dc_stride));
DEFINE(DCACHE_COUNT, offsetof(struct pdc_cache_info, dc_count));
DEFINE(DCACHE_LOOP, offsetof(struct pdc_cache_info, dc_loop));
DEFINE(ITLB_SID_BASE, offsetof(struct pdc_cache_info, it_sp_base));
DEFINE(ITLB_SID_STRIDE, offsetof(struct pdc_cache_info, it_sp_stride));
DEFINE(ITLB_SID_COUNT, offsetof(struct pdc_cache_info, it_sp_count));
DEFINE(ITLB_OFF_BASE, offsetof(struct pdc_cache_info, it_off_base));
DEFINE(ITLB_OFF_STRIDE, offsetof(struct pdc_cache_info, it_off_stride));
DEFINE(ITLB_OFF_COUNT, offsetof(struct pdc_cache_info, it_off_count));
DEFINE(ITLB_LOOP, offsetof(struct pdc_cache_info, it_loop));
DEFINE(DTLB_SID_BASE, offsetof(struct pdc_cache_info, dt_sp_base));
DEFINE(DTLB_SID_STRIDE, offsetof(struct pdc_cache_info, dt_sp_stride));
DEFINE(DTLB_SID_COUNT, offsetof(struct pdc_cache_info, dt_sp_count));
DEFINE(DTLB_OFF_BASE, offsetof(struct pdc_cache_info, dt_off_base));
DEFINE(DTLB_OFF_STRIDE, offsetof(struct pdc_cache_info, dt_off_stride));
DEFINE(DTLB_OFF_COUNT, offsetof(struct pdc_cache_info, dt_off_count));
DEFINE(DTLB_LOOP, offsetof(struct pdc_cache_info, dt_loop));
BLANK();
DEFINE(TIF_BLOCKSTEP_PA_BIT, 31-TIF_BLOCKSTEP);
DEFINE(TIF_SINGLESTEP_PA_BIT, 31-TIF_SINGLESTEP);
DEFINE(TIF_32BIT_PA_BIT, 31-TIF_32BIT);
BLANK();
DEFINE(ASM_PMD_SHIFT, PMD_SHIFT);
DEFINE(ASM_PGDIR_SHIFT, PGDIR_SHIFT);
DEFINE(ASM_BITS_PER_PGD, BITS_PER_PGD);
DEFINE(ASM_BITS_PER_PMD, BITS_PER_PMD);
DEFINE(ASM_BITS_PER_PTE, BITS_PER_PTE);
DEFINE(ASM_PMD_ENTRY, ((PAGE_OFFSET & PMD_MASK) >> PMD_SHIFT));
DEFINE(ASM_PGD_ENTRY, PAGE_OFFSET >> PGDIR_SHIFT);
DEFINE(ASM_PGD_ENTRY_SIZE, PGD_ENTRY_SIZE);
DEFINE(ASM_PMD_ENTRY_SIZE, PMD_ENTRY_SIZE);
DEFINE(ASM_PTE_ENTRY_SIZE, PTE_ENTRY_SIZE);
DEFINE(ASM_PFN_PTE_SHIFT, PFN_PTE_SHIFT);
DEFINE(ASM_PT_INITIAL, PT_INITIAL);
BLANK();
/* HUGEPAGE_SIZE is only used in vmlinux.lds.S to align kernel text
* and kernel data on physical huge pages */
#ifdef CONFIG_HUGETLB_PAGE
DEFINE(HUGEPAGE_SIZE, 1UL << REAL_HPAGE_SHIFT);
#elif !defined(CONFIG_64BIT)
DEFINE(HUGEPAGE_SIZE, 4*1024*1024);
#else
DEFINE(HUGEPAGE_SIZE, PAGE_SIZE);
#endif
BLANK();
DEFINE(ASM_PDC_RESULT_SIZE, NUM_PDC_RESULT * sizeof(unsigned long));
BLANK();
return 0;
}
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