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linux-stable/arch/powerpc/kernel/ppc_save_regs.S

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 06:55:01 +00:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
/*
* Copyright (C) 1996 Paul Mackerras.
*
* NOTE: assert(sizeof(buf) > 23 * sizeof(long))
*/
#include <asm/processor.h>
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
powerpc: Remove second definition of STACK_FRAME_OVERHEAD Since STACK_FRAME_OVERHEAD is defined in asm/ptrace.h and that is ASSEMBER safe, we can just include that instead of going via asm-offsets.h. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-18 15:06:17 +00:00
#include <asm/ptrace.h>
powerpc: move ASM_CONST and stringify_in_c() into asm-const.h This patch moves ASM_CONST() and stringify_in_c() into dedicated asm-const.h, then cleans all related inclusions. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [mpe: asm-compat.h should include asm-const.h] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-05 16:24:57 +00:00
#include <asm/asm-compat.h>
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
/*
* Grab the register values as they are now.
Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 01:57:33 +00:00
* This won't do a particularly good job because we really
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
* want our caller's caller's registers, and our caller has
* already executed its prologue.
* ToDo: We could reach back into the caller's save area to do
* a better job of representing the caller's state (note that
* that will be different for 32-bit and 64-bit, because of the
* different ABIs, though).
*/
powerpc: Prepare xmon_save_regs for use with kdump Today the arch/powerpc/xmon/setjmp.S file contains only the xmon_save_regs function. We want to use it for kdump purposes, so let's move the file into arch/powerpc/kernel/ and give the function a more generic name (ppc_save_regs). Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-17 10:08:55 +00:00
_GLOBAL(ppc_save_regs)
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_STL r0,0*SZL(r3)
powerpc/32: Use stmw/lmw for registers save/restore in asm arch/powerpc/Makefile activates -mmultiple on BE PPC32 configs in order to use multiple word instructions in functions entry/exit. The patch does the same for the asm parts, for consistency. On processors like the 8xx on which insn fetching is pretty slow, this speeds up registers save/restore. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [mpe: PPC32 is BE only, so drop the endian checks] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-17 17:08:18 +00:00
#ifdef CONFIG_PPC32
stmw r2, 2*SZL(r3)
#else
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_STL r2,2*SZL(r3)
PPC_STL r3,3*SZL(r3)
PPC_STL r4,4*SZL(r3)
PPC_STL r5,5*SZL(r3)
PPC_STL r6,6*SZL(r3)
PPC_STL r7,7*SZL(r3)
PPC_STL r8,8*SZL(r3)
PPC_STL r9,9*SZL(r3)
PPC_STL r10,10*SZL(r3)
PPC_STL r11,11*SZL(r3)
PPC_STL r12,12*SZL(r3)
PPC_STL r13,13*SZL(r3)
PPC_STL r14,14*SZL(r3)
PPC_STL r15,15*SZL(r3)
PPC_STL r16,16*SZL(r3)
PPC_STL r17,17*SZL(r3)
PPC_STL r18,18*SZL(r3)
PPC_STL r19,19*SZL(r3)
PPC_STL r20,20*SZL(r3)
PPC_STL r21,21*SZL(r3)
PPC_STL r22,22*SZL(r3)
PPC_STL r23,23*SZL(r3)
PPC_STL r24,24*SZL(r3)
PPC_STL r25,25*SZL(r3)
PPC_STL r26,26*SZL(r3)
PPC_STL r27,27*SZL(r3)
PPC_STL r28,28*SZL(r3)
PPC_STL r29,29*SZL(r3)
PPC_STL r30,30*SZL(r3)
PPC_STL r31,31*SZL(r3)
powerpc: Improve ppc_save_regs() Make ppc_save_regs() a bit more useful: - Set NIP to our caller rather rather than the caller's caller (which is what we save to LR in the stack frame). - Set SOFTE to the current irq soft-mask state rather than uninitialised. - Zero CFAR rather than leave it uninitialised. In qemu, injecting a nmi to an idle CPU gives a nicer stack trace (note NIP, IRQMASK, CFAR). Oops: System Reset, sig: 6 [#1] LE PAGE_SIZE=64K MMU=Hash PREEMPT SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc2-00429-ga76e38fd80bf #1277 NIP: c0000000000b6e5c LR: c0000000000b6e5c CTR: c000000000b06270 REGS: c00000000173fb08 TRAP: 0100 Not tainted MSR: 9000000000001033 <SF,HV,ME,IR,DR,RI,LE> CR: 28000224 XER: 00000000 CFAR: c0000000016a2128 IRQMASK: c00000000173fc80 GPR00: c0000000000b6e5c c00000000173fc80 c000000001743400 c00000000173fb08 GPR04: 0000000000000000 0000000000000000 0000000000000008 0000000000000001 GPR08: 00000001fea80000 0000000000000000 0000000000000000 ffffffffffffffff GPR12: c000000000b06270 c000000001930000 00000000300026c0 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000003 c0000000016a2128 GPR20: c0000001ffc97148 0000000000000001 c000000000f289a8 0000000000080000 GPR24: c0000000016e1480 000000011dc870ba 0000000000000000 0000000000000003 GPR28: c0000000016a2128 c0000001ffc97148 c0000000016a2260 0000000000000003 NIP [c0000000000b6e5c] power9_idle_type+0x5c/0x70 LR [c0000000000b6e5c] power9_idle_type+0x5c/0x70 Call Trace: [c00000000173fc80] [c0000000000b6e5c] power9_idle_type+0x5c/0x70 (unreliable) [c00000000173fcb0] [c000000000b062b0] stop_loop+0x40/0x60 [c00000000173fce0] [c000000000b022d8] cpuidle_enter_state+0xa8/0x660 [c00000000173fd60] [c000000000b0292c] cpuidle_enter+0x4c/0x70 [c00000000173fda0] [c00000000017624c] call_cpuidle+0x4c/0x90 [c00000000173fdc0] [c000000000176768] do_idle+0x338/0x460 [c00000000173fe60] [c000000000176b3c] cpu_startup_entry+0x3c/0x40 [c00000000173fe90] [c0000000000126b4] rest_init+0x124/0x140 [c00000000173fed0] [c0000000010948d4] start_kernel+0x938/0x988 [c00000000173ff90] [c00000000000cdcc] start_here_common+0x1c/0x20 Oops: System Reset, sig: 6 [#1] LE PAGE_SIZE=64K MMU=Hash PREEMPT SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc2-00430-gddce91b8712f #1278 NIP: c00000000001d150 LR: c0000000000b6e5c CTR: c000000000b06270 REGS: c00000000173fb08 TRAP: 0100 Not tainted MSR: 9000000000001033 <SF,HV,ME,IR,DR,RI,LE> CR: 28000224 XER: 00000000 CFAR: 0000000000000000 IRQMASK: 1 GPR00: c0000000000b6e5c c00000000173fc80 c000000001743400 c00000000173fb08 GPR04: 0000000000000000 0000000000000000 0000000000000008 0000000000000001 GPR08: 00000001fea80000 0000000000000000 0000000000000000 ffffffffffffffff GPR12: c000000000b06270 c000000001930000 00000000300026c0 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000003 c0000000016a2128 GPR20: c0000001ffc97148 0000000000000001 c000000000f289a8 0000000000080000 GPR24: c0000000016e1480 00000000b68db8ce 0000000000000000 0000000000000003 GPR28: c0000000016a2128 c0000001ffc97148 c0000000016a2260 0000000000000003 NIP [c00000000001d150] replay_system_reset+0x30/0xa0 LR [c0000000000b6e5c] power9_idle_type+0x5c/0x70 Call Trace: [c00000000173fc80] [c0000000000b6e5c] power9_idle_type+0x5c/0x70 (unreliable) [c00000000173fcb0] [c000000000b062b0] stop_loop+0x40/0x60 [c00000000173fce0] [c000000000b022d8] cpuidle_enter_state+0xa8/0x660 [c00000000173fd60] [c000000000b0292c] cpuidle_enter+0x4c/0x70 [c00000000173fda0] [c00000000017624c] call_cpuidle+0x4c/0x90 [c00000000173fdc0] [c000000000176768] do_idle+0x338/0x460 [c00000000173fe60] [c000000000176b38] cpu_startup_entry+0x38/0x40 [c00000000173fe90] [c0000000000126b4] rest_init+0x124/0x140 [c00000000173fed0] [c0000000010948d4] start_kernel+0x938/0x988 [c00000000173ff90] [c00000000000cdcc] start_here_common+0x1c/0x20 Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200403131006.123243-1-npiggin@gmail.com
2020-04-03 13:10:05 +00:00
lbz r0,PACAIRQSOFTMASK(r13)
PPC_STL r0,SOFTE-STACK_FRAME_OVERHEAD(r3)
powerpc/32: Use stmw/lmw for registers save/restore in asm arch/powerpc/Makefile activates -mmultiple on BE PPC32 configs in order to use multiple word instructions in functions entry/exit. The patch does the same for the asm parts, for consistency. On processors like the 8xx on which insn fetching is pretty slow, this speeds up registers save/restore. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [mpe: PPC32 is BE only, so drop the endian checks] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-17 17:08:18 +00:00
#endif
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
/* go up one stack frame for SP */
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_LL r4,0(r1)
PPC_STL r4,1*SZL(r3)
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
/* get caller's LR */
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_LL r0,LRSAVE(r4)
PPC_STL r0,_LINK-STACK_FRAME_OVERHEAD(r3)
powerpc: Improve ppc_save_regs() Make ppc_save_regs() a bit more useful: - Set NIP to our caller rather rather than the caller's caller (which is what we save to LR in the stack frame). - Set SOFTE to the current irq soft-mask state rather than uninitialised. - Zero CFAR rather than leave it uninitialised. In qemu, injecting a nmi to an idle CPU gives a nicer stack trace (note NIP, IRQMASK, CFAR). Oops: System Reset, sig: 6 [#1] LE PAGE_SIZE=64K MMU=Hash PREEMPT SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc2-00429-ga76e38fd80bf #1277 NIP: c0000000000b6e5c LR: c0000000000b6e5c CTR: c000000000b06270 REGS: c00000000173fb08 TRAP: 0100 Not tainted MSR: 9000000000001033 <SF,HV,ME,IR,DR,RI,LE> CR: 28000224 XER: 00000000 CFAR: c0000000016a2128 IRQMASK: c00000000173fc80 GPR00: c0000000000b6e5c c00000000173fc80 c000000001743400 c00000000173fb08 GPR04: 0000000000000000 0000000000000000 0000000000000008 0000000000000001 GPR08: 00000001fea80000 0000000000000000 0000000000000000 ffffffffffffffff GPR12: c000000000b06270 c000000001930000 00000000300026c0 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000003 c0000000016a2128 GPR20: c0000001ffc97148 0000000000000001 c000000000f289a8 0000000000080000 GPR24: c0000000016e1480 000000011dc870ba 0000000000000000 0000000000000003 GPR28: c0000000016a2128 c0000001ffc97148 c0000000016a2260 0000000000000003 NIP [c0000000000b6e5c] power9_idle_type+0x5c/0x70 LR [c0000000000b6e5c] power9_idle_type+0x5c/0x70 Call Trace: [c00000000173fc80] [c0000000000b6e5c] power9_idle_type+0x5c/0x70 (unreliable) [c00000000173fcb0] [c000000000b062b0] stop_loop+0x40/0x60 [c00000000173fce0] [c000000000b022d8] cpuidle_enter_state+0xa8/0x660 [c00000000173fd60] [c000000000b0292c] cpuidle_enter+0x4c/0x70 [c00000000173fda0] [c00000000017624c] call_cpuidle+0x4c/0x90 [c00000000173fdc0] [c000000000176768] do_idle+0x338/0x460 [c00000000173fe60] [c000000000176b3c] cpu_startup_entry+0x3c/0x40 [c00000000173fe90] [c0000000000126b4] rest_init+0x124/0x140 [c00000000173fed0] [c0000000010948d4] start_kernel+0x938/0x988 [c00000000173ff90] [c00000000000cdcc] start_here_common+0x1c/0x20 Oops: System Reset, sig: 6 [#1] LE PAGE_SIZE=64K MMU=Hash PREEMPT SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc2-00430-gddce91b8712f #1278 NIP: c00000000001d150 LR: c0000000000b6e5c CTR: c000000000b06270 REGS: c00000000173fb08 TRAP: 0100 Not tainted MSR: 9000000000001033 <SF,HV,ME,IR,DR,RI,LE> CR: 28000224 XER: 00000000 CFAR: 0000000000000000 IRQMASK: 1 GPR00: c0000000000b6e5c c00000000173fc80 c000000001743400 c00000000173fb08 GPR04: 0000000000000000 0000000000000000 0000000000000008 0000000000000001 GPR08: 00000001fea80000 0000000000000000 0000000000000000 ffffffffffffffff GPR12: c000000000b06270 c000000001930000 00000000300026c0 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000003 c0000000016a2128 GPR20: c0000001ffc97148 0000000000000001 c000000000f289a8 0000000000080000 GPR24: c0000000016e1480 00000000b68db8ce 0000000000000000 0000000000000003 GPR28: c0000000016a2128 c0000001ffc97148 c0000000016a2260 0000000000000003 NIP [c00000000001d150] replay_system_reset+0x30/0xa0 LR [c0000000000b6e5c] power9_idle_type+0x5c/0x70 Call Trace: [c00000000173fc80] [c0000000000b6e5c] power9_idle_type+0x5c/0x70 (unreliable) [c00000000173fcb0] [c000000000b062b0] stop_loop+0x40/0x60 [c00000000173fce0] [c000000000b022d8] cpuidle_enter_state+0xa8/0x660 [c00000000173fd60] [c000000000b0292c] cpuidle_enter+0x4c/0x70 [c00000000173fda0] [c00000000017624c] call_cpuidle+0x4c/0x90 [c00000000173fdc0] [c000000000176768] do_idle+0x338/0x460 [c00000000173fe60] [c000000000176b38] cpu_startup_entry+0x38/0x40 [c00000000173fe90] [c0000000000126b4] rest_init+0x124/0x140 [c00000000173fed0] [c0000000010948d4] start_kernel+0x938/0x988 [c00000000173ff90] [c00000000000cdcc] start_here_common+0x1c/0x20 Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200403131006.123243-1-npiggin@gmail.com
2020-04-03 13:10:05 +00:00
mflr r0
PPC_STL r0,_NIP-STACK_FRAME_OVERHEAD(r3)
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
mfmsr r0
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_STL r0,_MSR-STACK_FRAME_OVERHEAD(r3)
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
mfctr r0
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_STL r0,_CTR-STACK_FRAME_OVERHEAD(r3)
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
mfxer r0
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_STL r0,_XER-STACK_FRAME_OVERHEAD(r3)
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
mfcr r0
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_STL r0,_CCR-STACK_FRAME_OVERHEAD(r3)
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
li r0,0
[PATCH] powerpc: Consolidate asm compatibility macros This patch consolidates macros used to generate assembly for compatibility across different CPUs or configs. A new header, asm-powerpc/asm-compat.h contains the main compatibility macros. It uses some preprocessor magic to make the macros suitable both for use in .S files, and in inline asm in .c files. Headers (bitops.h, uaccess.h, atomic.h, bug.h) which had their own such compatibility macros are changed to use asm-compat.h. ppc_asm.h is now for use in .S files *only*, and a #error enforces that. As such, we're a lot more careless about namespace pollution here than in asm-compat.h. While we're at it, this patch adds a call to the PPC405_ERR77 macro in futex.h which should have had it already, but didn't. Built and booted on pSeries, Maple and iSeries (ARCH=powerpc). Built for 32-bit powermac (ARCH=powerpc) and Walnut (ARCH=ppc). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-10 01:56:55 +00:00
PPC_STL r0,_TRAP-STACK_FRAME_OVERHEAD(r3)
powerpc: Improve ppc_save_regs() Make ppc_save_regs() a bit more useful: - Set NIP to our caller rather rather than the caller's caller (which is what we save to LR in the stack frame). - Set SOFTE to the current irq soft-mask state rather than uninitialised. - Zero CFAR rather than leave it uninitialised. In qemu, injecting a nmi to an idle CPU gives a nicer stack trace (note NIP, IRQMASK, CFAR). Oops: System Reset, sig: 6 [#1] LE PAGE_SIZE=64K MMU=Hash PREEMPT SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc2-00429-ga76e38fd80bf #1277 NIP: c0000000000b6e5c LR: c0000000000b6e5c CTR: c000000000b06270 REGS: c00000000173fb08 TRAP: 0100 Not tainted MSR: 9000000000001033 <SF,HV,ME,IR,DR,RI,LE> CR: 28000224 XER: 00000000 CFAR: c0000000016a2128 IRQMASK: c00000000173fc80 GPR00: c0000000000b6e5c c00000000173fc80 c000000001743400 c00000000173fb08 GPR04: 0000000000000000 0000000000000000 0000000000000008 0000000000000001 GPR08: 00000001fea80000 0000000000000000 0000000000000000 ffffffffffffffff GPR12: c000000000b06270 c000000001930000 00000000300026c0 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000003 c0000000016a2128 GPR20: c0000001ffc97148 0000000000000001 c000000000f289a8 0000000000080000 GPR24: c0000000016e1480 000000011dc870ba 0000000000000000 0000000000000003 GPR28: c0000000016a2128 c0000001ffc97148 c0000000016a2260 0000000000000003 NIP [c0000000000b6e5c] power9_idle_type+0x5c/0x70 LR [c0000000000b6e5c] power9_idle_type+0x5c/0x70 Call Trace: [c00000000173fc80] [c0000000000b6e5c] power9_idle_type+0x5c/0x70 (unreliable) [c00000000173fcb0] [c000000000b062b0] stop_loop+0x40/0x60 [c00000000173fce0] [c000000000b022d8] cpuidle_enter_state+0xa8/0x660 [c00000000173fd60] [c000000000b0292c] cpuidle_enter+0x4c/0x70 [c00000000173fda0] [c00000000017624c] call_cpuidle+0x4c/0x90 [c00000000173fdc0] [c000000000176768] do_idle+0x338/0x460 [c00000000173fe60] [c000000000176b3c] cpu_startup_entry+0x3c/0x40 [c00000000173fe90] [c0000000000126b4] rest_init+0x124/0x140 [c00000000173fed0] [c0000000010948d4] start_kernel+0x938/0x988 [c00000000173ff90] [c00000000000cdcc] start_here_common+0x1c/0x20 Oops: System Reset, sig: 6 [#1] LE PAGE_SIZE=64K MMU=Hash PREEMPT SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc2-00430-gddce91b8712f #1278 NIP: c00000000001d150 LR: c0000000000b6e5c CTR: c000000000b06270 REGS: c00000000173fb08 TRAP: 0100 Not tainted MSR: 9000000000001033 <SF,HV,ME,IR,DR,RI,LE> CR: 28000224 XER: 00000000 CFAR: 0000000000000000 IRQMASK: 1 GPR00: c0000000000b6e5c c00000000173fc80 c000000001743400 c00000000173fb08 GPR04: 0000000000000000 0000000000000000 0000000000000008 0000000000000001 GPR08: 00000001fea80000 0000000000000000 0000000000000000 ffffffffffffffff GPR12: c000000000b06270 c000000001930000 00000000300026c0 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000003 c0000000016a2128 GPR20: c0000001ffc97148 0000000000000001 c000000000f289a8 0000000000080000 GPR24: c0000000016e1480 00000000b68db8ce 0000000000000000 0000000000000003 GPR28: c0000000016a2128 c0000001ffc97148 c0000000016a2260 0000000000000003 NIP [c00000000001d150] replay_system_reset+0x30/0xa0 LR [c0000000000b6e5c] power9_idle_type+0x5c/0x70 Call Trace: [c00000000173fc80] [c0000000000b6e5c] power9_idle_type+0x5c/0x70 (unreliable) [c00000000173fcb0] [c000000000b062b0] stop_loop+0x40/0x60 [c00000000173fce0] [c000000000b022d8] cpuidle_enter_state+0xa8/0x660 [c00000000173fd60] [c000000000b0292c] cpuidle_enter+0x4c/0x70 [c00000000173fda0] [c00000000017624c] call_cpuidle+0x4c/0x90 [c00000000173fdc0] [c000000000176768] do_idle+0x338/0x460 [c00000000173fe60] [c000000000176b38] cpu_startup_entry+0x38/0x40 [c00000000173fe90] [c0000000000126b4] rest_init+0x124/0x140 [c00000000173fed0] [c0000000010948d4] start_kernel+0x938/0x988 [c00000000173ff90] [c00000000000cdcc] start_here_common+0x1c/0x20 Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200403131006.123243-1-npiggin@gmail.com
2020-04-03 13:10:05 +00:00
PPC_STL r0,ORIG_GPR3-STACK_FRAME_OVERHEAD(r3)
powerpc: Merge xmon The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-28 12:53:37 +00:00
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