mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 16:36:48 +07:00
96a68b14db
Our sigreturn functions make use of a macro named nabi_no_regargs to declare 8 dummy arguments to a function, forcing the compiler to expect a pt_regs structure on the stack rather than in argument registers. This is an ugly hack which unnecessarily causes these sigreturn functions to need to care about the calling convention of the ABI the kernel is built for. Although this is abstracted via nabi_no_regargs, it's still ugly & unnecessary. Remove nabi_no_regargs & the struct pt_regs argument from sigreturn functions, and instead use current_pt_regs() to find the struct pt_regs on the stack, which works cleanly regardless of ABI. Signed-off-by: Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/20106/ Cc: James Hogan <jhogan@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1999, 2000, 2003 Ralf Baechle
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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*/
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#ifndef _ASM_SIM_H
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#define _ASM_SIM_H
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#include <asm/asm-offsets.h>
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#define __str2(x) #x
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#define __str(x) __str2(x)
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#ifdef CONFIG_32BIT
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#define save_static_function(symbol) \
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__asm__( \
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".text\n\t" \
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".globl\t__" #symbol "\n\t" \
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".align\t2\n\t" \
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".type\t__" #symbol ", @function\n\t" \
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".ent\t__" #symbol ", 0\n__" \
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#symbol":\n\t" \
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".frame\t$29, 0, $31\n\t" \
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"sw\t$16,"__str(PT_R16)"($29)\t\t\t# save_static_function\n\t" \
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"sw\t$17,"__str(PT_R17)"($29)\n\t" \
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"sw\t$18,"__str(PT_R18)"($29)\n\t" \
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"sw\t$19,"__str(PT_R19)"($29)\n\t" \
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"sw\t$20,"__str(PT_R20)"($29)\n\t" \
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"sw\t$21,"__str(PT_R21)"($29)\n\t" \
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"sw\t$22,"__str(PT_R22)"($29)\n\t" \
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"sw\t$23,"__str(PT_R23)"($29)\n\t" \
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"sw\t$30,"__str(PT_R30)"($29)\n\t" \
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"j\t" #symbol "\n\t" \
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".end\t__" #symbol "\n\t" \
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".size\t__" #symbol",. - __" #symbol)
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#endif /* CONFIG_32BIT */
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#ifdef CONFIG_64BIT
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#define save_static_function(symbol) \
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__asm__( \
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".text\n\t" \
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".globl\t__" #symbol "\n\t" \
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".align\t2\n\t" \
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".type\t__" #symbol ", @function\n\t" \
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".ent\t__" #symbol ", 0\n__" \
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#symbol":\n\t" \
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".frame\t$29, 0, $31\n\t" \
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"sd\t$16,"__str(PT_R16)"($29)\t\t\t# save_static_function\n\t" \
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"sd\t$17,"__str(PT_R17)"($29)\n\t" \
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"sd\t$18,"__str(PT_R18)"($29)\n\t" \
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"sd\t$19,"__str(PT_R19)"($29)\n\t" \
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"sd\t$20,"__str(PT_R20)"($29)\n\t" \
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"sd\t$21,"__str(PT_R21)"($29)\n\t" \
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"sd\t$22,"__str(PT_R22)"($29)\n\t" \
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"sd\t$23,"__str(PT_R23)"($29)\n\t" \
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"sd\t$30,"__str(PT_R30)"($29)\n\t" \
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"j\t" #symbol "\n\t" \
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".end\t__" #symbol "\n\t" \
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".size\t__" #symbol",. - __" #symbol)
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#endif /* CONFIG_64BIT */
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#endif /* _ASM_SIM_H */
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