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