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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8801ccb9fa
Commitc8921d72e3("parisc: Fix and improve kernel stack unwinding") broke booting of 64-bit kernels. On 64-bit kernels function pointers are actually function descriptors which require dereferencing. In this patch we instead declare functions in assembly code which are referenced from C-code as external data pointers with the ENTRY() macro and thus can use a simple external reference to the functions. Signed-off-by: Helge Deller <deller@gmx.de> Fixes:c8921d72e3("parisc: Fix and improve kernel stack unwinding")
41 lines
738 B
C
41 lines
738 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_PARISC_LINKAGE_H
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#define __ASM_PARISC_LINKAGE_H
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#include <asm/dwarf.h>
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#ifndef __ALIGN
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#define __ALIGN .align 4
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#define __ALIGN_STR ".align 4"
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#endif
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/*
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* In parisc assembly a semicolon marks a comment while a
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* exclamation mark is used to separate independent lines.
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*/
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#define ASM_NL !
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#ifdef __ASSEMBLY__
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#define ENTRY(name) \
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ALIGN !\
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name: ASM_NL\
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.export name
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#define ENTRY_CFI(name, ...) \
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ENTRY(name) ASM_NL\
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.proc ASM_NL\
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.callinfo __VA_ARGS__ ASM_NL\
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.entry ASM_NL\
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CFI_STARTPROC
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#define ENDPROC_CFI(name) \
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CFI_ENDPROC ASM_NL\
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.exit ASM_NL\
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.procend ASM_NL\
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ENDPROC(name)
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#endif /* __ASSEMBLY__ */
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#endif /* __ASM_PARISC_LINKAGE_H */
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