Contributors: 15
Author Tokens Token Proportion Commits Commit Proportion
Anton Blanchard 59 25.54% 4 15.38%
Jon Loeliger 43 18.61% 2 7.69%
Nicholas Piggin 24 10.39% 2 7.69%
Rusty Russell 24 10.39% 4 15.38%
Michael Ellerman 23 9.96% 3 11.54%
Naveen N Rao 18 7.79% 1 3.85%
Steven Rostedt 13 5.63% 2 7.69%
Sergey Senozhatsky 9 3.90% 1 3.85%
Naveen N. Rao 4 1.73% 1 3.85%
David Howells 3 1.30% 1 3.85%
Josh Poimboeuf 3 1.30% 1 3.85%
Paul Mackerras 3 1.30% 1 3.85%
Arnd Bergmann 3 1.30% 1 3.85%
Thomas Gleixner 1 0.43% 1 3.85%
Adam Buchbinder 1 0.43% 1 3.85%
Total 231 26

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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_POWERPC_MODULE_H
#define _ASM_POWERPC_MODULE_H
#ifdef __KERNEL__

#include <linux/list.h>
#include <asm/bug.h>
#include <asm-generic/module.h>

#ifndef __powerpc64__
/*
 * Thanks to Paul M for explaining this.
 *
 * PPC can only do rel jumps += 32MB, and often the kernel and other
 * modules are further away than this.  So, we jump to a table of
 * trampolines attached to the module (the Procedure Linkage Table)
 * whenever that happens.
 */

struct ppc_plt_entry {
	/* 16 byte jump instruction sequence (4 instructions) */
	unsigned int jump[4];
};
#endif	/* __powerpc64__ */


struct mod_arch_specific {
#ifdef __powerpc64__
	unsigned int stubs_section;	/* Index of stubs section in module */
#ifdef CONFIG_PPC_KERNEL_PCREL
	unsigned int got_section;	/* What section is the GOT? */
	unsigned int pcpu_section;	/* .data..percpu section */
#else
	unsigned int toc_section;	/* What section is the TOC? */
	bool toc_fixed;			/* Have we fixed up .TOC.? */
#endif

#ifdef CONFIG_PPC64_ELF_ABI_V1
	/* For module function descriptor dereference */
	unsigned long start_opd;
	unsigned long end_opd;
#endif
#else /* powerpc64 */
	/* Indices of PLT sections within module. */
	unsigned int core_plt_section;
	unsigned int init_plt_section;
#endif /* powerpc64 */

#ifdef CONFIG_DYNAMIC_FTRACE
	unsigned long tramp;
	unsigned long tramp_regs;
#ifdef CONFIG_PPC_FTRACE_OUT_OF_LINE
	struct ftrace_ool_stub *ool_stubs;
	unsigned int ool_stub_count;
	unsigned int ool_stub_index;
#endif
#endif
};

/*
 * Select ELF headers.
 * Make empty sections for module_frob_arch_sections to expand.
 */

#ifdef __powerpc64__
#    ifdef MODULE
	asm(".section .stubs,\"ax\",@nobits; .align 3; .previous");
#        ifdef CONFIG_PPC_KERNEL_PCREL
	    asm(".section .mygot,\"a\",@nobits; .align 3; .previous");
#        endif
#    endif
#else
#    ifdef MODULE
	asm(".section .plt,\"ax\",@nobits; .align 3; .previous");
	asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous");
#    endif	/* MODULE */
#endif

#ifdef CONFIG_DYNAMIC_FTRACE
int module_trampoline_target(struct module *mod, unsigned long trampoline,
			     unsigned long *target);
int module_finalize_ftrace(struct module *mod, const Elf_Shdr *sechdrs);
#else
static inline int module_finalize_ftrace(struct module *mod, const Elf_Shdr *sechdrs)
{
	return 0;
}
#endif

#endif /* __KERNEL__ */
#endif	/* _ASM_POWERPC_MODULE_H */