/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_ELFCORE_H #define _LINUX_ELFCORE_H #include <linux/user.h> #include <linux/bug.h> #include <linux/sched/task_stack.h> #include <asm/elf.h> #include <uapi/linux/elfcore.h> struct coredump_params; static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs) { #ifdef ELF_CORE_COPY_REGS ELF_CORE_COPY_REGS((*elfregs), regs) #else BUG_ON(sizeof(*elfregs) != sizeof(*regs)); *(struct pt_regs *)elfregs = *regs; #endif } static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs) { #ifdef ELF_CORE_COPY_KERNEL_REGS ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs); #else elf_core_copy_regs(elfregs, regs); #endif } static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs) { #if defined (ELF_CORE_COPY_TASK_REGS) return ELF_CORE_COPY_TASK_REGS(t, elfregs); #elif defined (task_pt_regs) elf_core_copy_regs(elfregs, task_pt_regs(t)); #endif return 0; } extern int dump_fpu (struct pt_regs *, elf_fpregset_t *); static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu) { #ifdef ELF_CORE_COPY_FPREGS return ELF_CORE_COPY_FPREGS(t, fpu); #else return dump_fpu(regs, fpu); #endif } #ifdef ELF_CORE_COPY_XFPREGS static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu) { return ELF_CORE_COPY_XFPREGS(t, xfpu); } #endif /* * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out * extra segments containing the gate DSO contents. Dumping its * contents makes post-mortem fully interpretable later without matching up * the same kernel and hardware config to see what PC values meant. * Dumping its extra ELF program headers includes all the other information * a debugger needs to easily find how the gate DSO was being used. */ extern Elf_Half elf_core_extra_phdrs(void); extern int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset); extern int elf_core_write_extra_data(struct coredump_params *cprm); extern size_t elf_core_extra_data_size(void); #endif /* _LINUX_ELFCORE_H */