15c48b108SAl Viro /* 25c48b108SAl Viro * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) 35c48b108SAl Viro * Licensed under the GPL 45c48b108SAl Viro */ 55c48b108SAl Viro #ifndef __UM_ELF_X86_H 65c48b108SAl Viro #define __UM_ELF_X86_H 75c48b108SAl Viro 85c48b108SAl Viro #include <asm/user.h> 937185b33SAl Viro #include <skas.h> 105c48b108SAl Viro 115c48b108SAl Viro #ifdef CONFIG_X86_32 125c48b108SAl Viro 135c48b108SAl Viro #define R_386_NONE 0 145c48b108SAl Viro #define R_386_32 1 155c48b108SAl Viro #define R_386_PC32 2 165c48b108SAl Viro #define R_386_GOT32 3 175c48b108SAl Viro #define R_386_PLT32 4 185c48b108SAl Viro #define R_386_COPY 5 195c48b108SAl Viro #define R_386_GLOB_DAT 6 205c48b108SAl Viro #define R_386_JMP_SLOT 7 215c48b108SAl Viro #define R_386_RELATIVE 8 225c48b108SAl Viro #define R_386_GOTOFF 9 235c48b108SAl Viro #define R_386_GOTPC 10 245c48b108SAl Viro #define R_386_NUM 11 255c48b108SAl Viro 265c48b108SAl Viro /* 275c48b108SAl Viro * This is used to ensure we don't load something for the wrong architecture. 285c48b108SAl Viro */ 295c48b108SAl Viro #define elf_check_arch(x) \ 305c48b108SAl Viro (((x)->e_machine == EM_386) || ((x)->e_machine == EM_486)) 315c48b108SAl Viro 325c48b108SAl Viro #define ELF_CLASS ELFCLASS32 335c48b108SAl Viro #define ELF_DATA ELFDATA2LSB 345c48b108SAl Viro #define ELF_ARCH EM_386 355c48b108SAl Viro 365c48b108SAl Viro #define ELF_PLAT_INIT(regs, load_addr) do { \ 37243412beSAl Viro PT_REGS_BX(regs) = 0; \ 38243412beSAl Viro PT_REGS_CX(regs) = 0; \ 39243412beSAl Viro PT_REGS_DX(regs) = 0; \ 40243412beSAl Viro PT_REGS_SI(regs) = 0; \ 41243412beSAl Viro PT_REGS_DI(regs) = 0; \ 42243412beSAl Viro PT_REGS_BP(regs) = 0; \ 43243412beSAl Viro PT_REGS_AX(regs) = 0; \ 445c48b108SAl Viro } while (0) 455c48b108SAl Viro 465c48b108SAl Viro /* Shamelessly stolen from include/asm-i386/elf.h */ 475c48b108SAl Viro 485c48b108SAl Viro #define ELF_CORE_COPY_REGS(pr_reg, regs) do { \ 49243412beSAl Viro pr_reg[0] = PT_REGS_BX(regs); \ 50243412beSAl Viro pr_reg[1] = PT_REGS_CX(regs); \ 51243412beSAl Viro pr_reg[2] = PT_REGS_DX(regs); \ 52243412beSAl Viro pr_reg[3] = PT_REGS_SI(regs); \ 53243412beSAl Viro pr_reg[4] = PT_REGS_DI(regs); \ 54243412beSAl Viro pr_reg[5] = PT_REGS_BP(regs); \ 55243412beSAl Viro pr_reg[6] = PT_REGS_AX(regs); \ 565c48b108SAl Viro pr_reg[7] = PT_REGS_DS(regs); \ 575c48b108SAl Viro pr_reg[8] = PT_REGS_ES(regs); \ 585c48b108SAl Viro /* fake once used fs and gs selectors? */ \ 595c48b108SAl Viro pr_reg[9] = PT_REGS_DS(regs); \ 605c48b108SAl Viro pr_reg[10] = PT_REGS_DS(regs); \ 615c48b108SAl Viro pr_reg[11] = PT_REGS_SYSCALL_NR(regs); \ 625c48b108SAl Viro pr_reg[12] = PT_REGS_IP(regs); \ 635c48b108SAl Viro pr_reg[13] = PT_REGS_CS(regs); \ 645c48b108SAl Viro pr_reg[14] = PT_REGS_EFLAGS(regs); \ 655c48b108SAl Viro pr_reg[15] = PT_REGS_SP(regs); \ 665c48b108SAl Viro pr_reg[16] = PT_REGS_SS(regs); \ 675c48b108SAl Viro } while (0); 685c48b108SAl Viro 695c48b108SAl Viro extern char * elf_aux_platform; 705c48b108SAl Viro #define ELF_PLATFORM (elf_aux_platform) 715c48b108SAl Viro 725c48b108SAl Viro extern unsigned long vsyscall_ehdr; 735c48b108SAl Viro extern unsigned long vsyscall_end; 745c48b108SAl Viro extern unsigned long __kernel_vsyscall; 755c48b108SAl Viro 765c48b108SAl Viro /* 775c48b108SAl Viro * This is the range that is readable by user mode, and things 785c48b108SAl Viro * acting like user mode such as get_user_pages. 795c48b108SAl Viro */ 805c48b108SAl Viro #define FIXADDR_USER_START vsyscall_ehdr 815c48b108SAl Viro #define FIXADDR_USER_END vsyscall_end 825c48b108SAl Viro 835c48b108SAl Viro 845c48b108SAl Viro /* 855c48b108SAl Viro * Architecture-neutral AT_ values in 0-17, leave some room 865c48b108SAl Viro * for more of them, start the x86-specific ones at 32. 875c48b108SAl Viro */ 885c48b108SAl Viro #define AT_SYSINFO 32 895c48b108SAl Viro #define AT_SYSINFO_EHDR 33 905c48b108SAl Viro 915c48b108SAl Viro #define ARCH_DLINFO \ 925c48b108SAl Viro do { \ 935c48b108SAl Viro if ( vsyscall_ehdr ) { \ 945c48b108SAl Viro NEW_AUX_ENT(AT_SYSINFO, __kernel_vsyscall); \ 955c48b108SAl Viro NEW_AUX_ENT(AT_SYSINFO_EHDR, vsyscall_ehdr); \ 965c48b108SAl Viro } \ 975c48b108SAl Viro } while (0) 985c48b108SAl Viro 995c48b108SAl Viro #else 1005c48b108SAl Viro 1015c48b108SAl Viro /* x86-64 relocation types, taken from asm-x86_64/elf.h */ 1025c48b108SAl Viro #define R_X86_64_NONE 0 /* No reloc */ 1035c48b108SAl Viro #define R_X86_64_64 1 /* Direct 64 bit */ 1045c48b108SAl Viro #define R_X86_64_PC32 2 /* PC relative 32 bit signed */ 1055c48b108SAl Viro #define R_X86_64_GOT32 3 /* 32 bit GOT entry */ 1065c48b108SAl Viro #define R_X86_64_PLT32 4 /* 32 bit PLT address */ 1075c48b108SAl Viro #define R_X86_64_COPY 5 /* Copy symbol at runtime */ 1085c48b108SAl Viro #define R_X86_64_GLOB_DAT 6 /* Create GOT entry */ 1095c48b108SAl Viro #define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */ 1105c48b108SAl Viro #define R_X86_64_RELATIVE 8 /* Adjust by program base */ 1115c48b108SAl Viro #define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative 1125c48b108SAl Viro offset to GOT */ 1135c48b108SAl Viro #define R_X86_64_32 10 /* Direct 32 bit zero extended */ 1145c48b108SAl Viro #define R_X86_64_32S 11 /* Direct 32 bit sign extended */ 1155c48b108SAl Viro #define R_X86_64_16 12 /* Direct 16 bit zero extended */ 1165c48b108SAl Viro #define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */ 1175c48b108SAl Viro #define R_X86_64_8 14 /* Direct 8 bit sign extended */ 1185c48b108SAl Viro #define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */ 119b40a142bSArd Biesheuvel #define R_X86_64_PC64 24 /* Place relative 64-bit signed */ 1205c48b108SAl Viro 1215c48b108SAl Viro /* 1225c48b108SAl Viro * This is used to ensure we don't load something for the wrong architecture. 1235c48b108SAl Viro */ 1245c48b108SAl Viro #define elf_check_arch(x) \ 1255c48b108SAl Viro ((x)->e_machine == EM_X86_64) 1265c48b108SAl Viro 1275c48b108SAl Viro #define ELF_CLASS ELFCLASS64 1285c48b108SAl Viro #define ELF_DATA ELFDATA2LSB 1295c48b108SAl Viro #define ELF_ARCH EM_X86_64 1305c48b108SAl Viro 1315c48b108SAl Viro #define ELF_PLAT_INIT(regs, load_addr) do { \ 132243412beSAl Viro PT_REGS_BX(regs) = 0; \ 133243412beSAl Viro PT_REGS_CX(regs) = 0; \ 134243412beSAl Viro PT_REGS_DX(regs) = 0; \ 135243412beSAl Viro PT_REGS_SI(regs) = 0; \ 136243412beSAl Viro PT_REGS_DI(regs) = 0; \ 137243412beSAl Viro PT_REGS_BP(regs) = 0; \ 138243412beSAl Viro PT_REGS_AX(regs) = 0; \ 1395c48b108SAl Viro PT_REGS_R8(regs) = 0; \ 1405c48b108SAl Viro PT_REGS_R9(regs) = 0; \ 1415c48b108SAl Viro PT_REGS_R10(regs) = 0; \ 1425c48b108SAl Viro PT_REGS_R11(regs) = 0; \ 1435c48b108SAl Viro PT_REGS_R12(regs) = 0; \ 1445c48b108SAl Viro PT_REGS_R13(regs) = 0; \ 1455c48b108SAl Viro PT_REGS_R14(regs) = 0; \ 1465c48b108SAl Viro PT_REGS_R15(regs) = 0; \ 1475c48b108SAl Viro } while (0) 1485c48b108SAl Viro 1495c48b108SAl Viro #define ELF_CORE_COPY_REGS(pr_reg, _regs) \ 1505c48b108SAl Viro (pr_reg)[0] = (_regs)->regs.gp[0]; \ 1515c48b108SAl Viro (pr_reg)[1] = (_regs)->regs.gp[1]; \ 1525c48b108SAl Viro (pr_reg)[2] = (_regs)->regs.gp[2]; \ 1535c48b108SAl Viro (pr_reg)[3] = (_regs)->regs.gp[3]; \ 1545c48b108SAl Viro (pr_reg)[4] = (_regs)->regs.gp[4]; \ 1555c48b108SAl Viro (pr_reg)[5] = (_regs)->regs.gp[5]; \ 1565c48b108SAl Viro (pr_reg)[6] = (_regs)->regs.gp[6]; \ 1575c48b108SAl Viro (pr_reg)[7] = (_regs)->regs.gp[7]; \ 1585c48b108SAl Viro (pr_reg)[8] = (_regs)->regs.gp[8]; \ 1595c48b108SAl Viro (pr_reg)[9] = (_regs)->regs.gp[9]; \ 1605c48b108SAl Viro (pr_reg)[10] = (_regs)->regs.gp[10]; \ 1615c48b108SAl Viro (pr_reg)[11] = (_regs)->regs.gp[11]; \ 1625c48b108SAl Viro (pr_reg)[12] = (_regs)->regs.gp[12]; \ 1635c48b108SAl Viro (pr_reg)[13] = (_regs)->regs.gp[13]; \ 1645c48b108SAl Viro (pr_reg)[14] = (_regs)->regs.gp[14]; \ 1655c48b108SAl Viro (pr_reg)[15] = (_regs)->regs.gp[15]; \ 1665c48b108SAl Viro (pr_reg)[16] = (_regs)->regs.gp[16]; \ 1675c48b108SAl Viro (pr_reg)[17] = (_regs)->regs.gp[17]; \ 1685c48b108SAl Viro (pr_reg)[18] = (_regs)->regs.gp[18]; \ 1695c48b108SAl Viro (pr_reg)[19] = (_regs)->regs.gp[19]; \ 1705c48b108SAl Viro (pr_reg)[20] = (_regs)->regs.gp[20]; \ 1715c48b108SAl Viro (pr_reg)[21] = current->thread.arch.fs; \ 1725c48b108SAl Viro (pr_reg)[22] = 0; \ 1735c48b108SAl Viro (pr_reg)[23] = 0; \ 1745c48b108SAl Viro (pr_reg)[24] = 0; \ 1755c48b108SAl Viro (pr_reg)[25] = 0; \ 1765c48b108SAl Viro (pr_reg)[26] = 0; 1775c48b108SAl Viro 1785c48b108SAl Viro #define ELF_PLATFORM "x86_64" 1795c48b108SAl Viro 1805c48b108SAl Viro /* No user-accessible fixmap addresses, i.e. vsyscall */ 1815c48b108SAl Viro #define FIXADDR_USER_START 0 1825c48b108SAl Viro #define FIXADDR_USER_END 0 1835c48b108SAl Viro 1845c48b108SAl Viro #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 1855c48b108SAl Viro struct linux_binprm; 1865c48b108SAl Viro extern int arch_setup_additional_pages(struct linux_binprm *bprm, 1875c48b108SAl Viro int uses_interp); 1885c48b108SAl Viro 1895c48b108SAl Viro extern unsigned long um_vdso_addr; 1905c48b108SAl Viro #define AT_SYSINFO_EHDR 33 1915c48b108SAl Viro #define ARCH_DLINFO NEW_AUX_ENT(AT_SYSINFO_EHDR, um_vdso_addr) 1925c48b108SAl Viro 1935c48b108SAl Viro #endif 1945c48b108SAl Viro 1955c48b108SAl Viro typedef unsigned long elf_greg_t; 1965c48b108SAl Viro 1975c48b108SAl Viro #define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t)) 1985c48b108SAl Viro typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 1995c48b108SAl Viro 2005c48b108SAl Viro typedef struct user_i387_struct elf_fpregset_t; 2015c48b108SAl Viro 2025c48b108SAl Viro struct task_struct; 2035c48b108SAl Viro 2045c48b108SAl Viro #define ELF_EXEC_PAGESIZE 4096 2055c48b108SAl Viro 206fc9bea0eSAndrey Ryabinin #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) 2075c48b108SAl Viro 2085c48b108SAl Viro extern long elf_aux_hwcap; 2095c48b108SAl Viro #define ELF_HWCAP (elf_aux_hwcap) 2105c48b108SAl Viro 211*1a594f0aSRandy Dunlap #define SET_PERSONALITY(ex) do {} while(0) 2125c48b108SAl Viro 2135c48b108SAl Viro #endif 214