1 #ifndef _LINUX_ELFCORE_H 2 #define _LINUX_ELFCORE_H 3 4 #include <linux/user.h> 5 #include <linux/bug.h> 6 #include <linux/sched/task_stack.h> 7 8 #include <asm/elf.h> 9 #include <uapi/linux/elfcore.h> 10 11 struct coredump_params; 12 13 static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs) 14 { 15 #ifdef ELF_CORE_COPY_REGS 16 ELF_CORE_COPY_REGS((*elfregs), regs) 17 #else 18 BUG_ON(sizeof(*elfregs) != sizeof(*regs)); 19 *(struct pt_regs *)elfregs = *regs; 20 #endif 21 } 22 23 static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs) 24 { 25 #ifdef ELF_CORE_COPY_KERNEL_REGS 26 ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs); 27 #else 28 elf_core_copy_regs(elfregs, regs); 29 #endif 30 } 31 32 static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs) 33 { 34 #if defined (ELF_CORE_COPY_TASK_REGS) 35 return ELF_CORE_COPY_TASK_REGS(t, elfregs); 36 #elif defined (task_pt_regs) 37 elf_core_copy_regs(elfregs, task_pt_regs(t)); 38 #endif 39 return 0; 40 } 41 42 extern int dump_fpu (struct pt_regs *, elf_fpregset_t *); 43 44 static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu) 45 { 46 #ifdef ELF_CORE_COPY_FPREGS 47 return ELF_CORE_COPY_FPREGS(t, fpu); 48 #else 49 return dump_fpu(regs, fpu); 50 #endif 51 } 52 53 #ifdef ELF_CORE_COPY_XFPREGS 54 static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu) 55 { 56 return ELF_CORE_COPY_XFPREGS(t, xfpu); 57 } 58 #endif 59 60 /* 61 * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out 62 * extra segments containing the gate DSO contents. Dumping its 63 * contents makes post-mortem fully interpretable later without matching up 64 * the same kernel and hardware config to see what PC values meant. 65 * Dumping its extra ELF program headers includes all the other information 66 * a debugger needs to easily find how the gate DSO was being used. 67 */ 68 extern Elf_Half elf_core_extra_phdrs(void); 69 extern int 70 elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset); 71 extern int 72 elf_core_write_extra_data(struct coredump_params *cprm); 73 extern size_t elf_core_extra_data_size(void); 74 75 #endif /* _LINUX_ELFCORE_H */ 76