/* * ELF definitions for the Hexagon architecture * * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #ifndef __ASM_ELF_H #define __ASM_ELF_H #include #include /* * This should really be in linux/elf-em.h. */ #define EM_HEXAGON 164 /* QUALCOMM Hexagon */ struct elf32_hdr; /* * ELF header e_flags defines. */ /* should have stuff like "CPU type" and maybe "ABI version", etc */ /* Hexagon relocations */ /* V2 */ #define R_HEXAGON_NONE 0 #define R_HEXAGON_B22_PCREL 1 #define R_HEXAGON_B15_PCREL 2 #define R_HEXAGON_B7_PCREL 3 #define R_HEXAGON_LO16 4 #define R_HEXAGON_HI16 5 #define R_HEXAGON_32 6 #define R_HEXAGON_16 7 #define R_HEXAGON_8 8 #define R_HEXAGON_GPREL16_0 9 #define R_HEXAGON_GPREL16_1 10 #define R_HEXAGON_GPREL16_2 11 #define R_HEXAGON_GPREL16_3 12 #define R_HEXAGON_HL16 13 /* V3 */ #define R_HEXAGON_B13_PCREL 14 /* V4 */ #define R_HEXAGON_B9_PCREL 15 /* V4 (extenders) */ #define R_HEXAGON_B32_PCREL_X 16 #define R_HEXAGON_32_6_X 17 /* V4 (extended) */ #define R_HEXAGON_B22_PCREL_X 18 #define R_HEXAGON_B15_PCREL_X 19 #define R_HEXAGON_B13_PCREL_X 20 #define R_HEXAGON_B9_PCREL_X 21 #define R_HEXAGON_B7_PCREL_X 22 #define R_HEXAGON_16_X 23 #define R_HEXAGON_12_X 24 #define R_HEXAGON_11_X 25 #define R_HEXAGON_10_X 26 #define R_HEXAGON_9_X 27 #define R_HEXAGON_8_X 28 #define R_HEXAGON_7_X 29 #define R_HEXAGON_6_X 30 /* V2 PIC */ #define R_HEXAGON_32_PCREL 31 #define R_HEXAGON_COPY 32 #define R_HEXAGON_GLOB_DAT 33 #define R_HEXAGON_JMP_SLOT 34 #define R_HEXAGON_RELATIVE 35 #define R_HEXAGON_PLT_B22_PCREL 36 #define R_HEXAGON_GOTOFF_LO16 37 #define R_HEXAGON_GOTOFF_HI16 38 #define R_HEXAGON_GOTOFF_32 39 #define R_HEXAGON_GOT_LO16 40 #define R_HEXAGON_GOT_HI16 41 #define R_HEXAGON_GOT_32 42 #define R_HEXAGON_GOT_16 43 /* * ELF register definitions.. */ typedef unsigned long elf_greg_t; typedef struct user_regs_struct elf_gregset_t; #define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long)) /* Placeholder */ typedef unsigned long elf_fpregset_t; /* * Bypass the whole "regsets" thing for now and use the define. */ #if CONFIG_HEXAGON_ARCH_VERSION >= 4 #define CS_COPYREGS(DEST,REGS) \ do {\ DEST.cs0 = REGS->cs0;\ DEST.cs1 = REGS->cs1;\ } while (0) #else #define CS_COPYREGS(DEST,REGS) #endif #define ELF_CORE_COPY_REGS(DEST, REGS) \ do { \ DEST.r0 = REGS->r00; \ DEST.r1 = REGS->r01; \ DEST.r2 = REGS->r02; \ DEST.r3 = REGS->r03; \ DEST.r4 = REGS->r04; \ DEST.r5 = REGS->r05; \ DEST.r6 = REGS->r06; \ DEST.r7 = REGS->r07; \ DEST.r8 = REGS->r08; \ DEST.r9 = REGS->r09; \ DEST.r10 = REGS->r10; \ DEST.r11 = REGS->r11; \ DEST.r12 = REGS->r12; \ DEST.r13 = REGS->r13; \ DEST.r14 = REGS->r14; \ DEST.r15 = REGS->r15; \ DEST.r16 = REGS->r16; \ DEST.r17 = REGS->r17; \ DEST.r18 = REGS->r18; \ DEST.r19 = REGS->r19; \ DEST.r20 = REGS->r20; \ DEST.r21 = REGS->r21; \ DEST.r22 = REGS->r22; \ DEST.r23 = REGS->r23; \ DEST.r24 = REGS->r24; \ DEST.r25 = REGS->r25; \ DEST.r26 = REGS->r26; \ DEST.r27 = REGS->r27; \ DEST.r28 = REGS->r28; \ DEST.r29 = pt_psp(REGS); \ DEST.r30 = REGS->r30; \ DEST.r31 = REGS->r31; \ DEST.sa0 = REGS->sa0; \ DEST.lc0 = REGS->lc0; \ DEST.sa1 = REGS->sa1; \ DEST.lc1 = REGS->lc1; \ DEST.m0 = REGS->m0; \ DEST.m1 = REGS->m1; \ DEST.usr = REGS->usr; \ DEST.p3_0 = REGS->preds; \ DEST.gp = REGS->gp; \ DEST.ugp = REGS->ugp; \ CS_COPYREGS(DEST,REGS); \ DEST.pc = pt_elr(REGS); \ DEST.cause = pt_cause(REGS); \ DEST.badva = pt_badva(REGS); \ } while (0); /* * This is used to ensure we don't load something for the wrong architecture. * Checks the machine and ABI type. */ #define elf_check_arch(hdr) ((hdr)->e_machine == EM_HEXAGON) /* * These are used to set parameters in the core dumps. */ #define ELF_CLASS ELFCLASS32 #define ELF_DATA ELFDATA2LSB #define ELF_ARCH EM_HEXAGON #if CONFIG_HEXAGON_ARCH_VERSION == 2 #define ELF_CORE_EFLAGS 0x1 #endif #if CONFIG_HEXAGON_ARCH_VERSION == 3 #define ELF_CORE_EFLAGS 0x2 #endif #if CONFIG_HEXAGON_ARCH_VERSION == 4 #define ELF_CORE_EFLAGS 0x3 #endif /* * Some architectures have ld.so set up a pointer to a function * to be registered using atexit, to facilitate cleanup. So that * static executables will be well-behaved, we would null the register * in question here, in the pt_regs structure passed. For now, * leave it a null macro. */ #define ELF_PLAT_INIT(regs, load_addr) do { } while (0) #define USE_ELF_CORE_DUMP #define CORE_DUMP_USE_REGSET /* Hrm is this going to cause problems for changing PAGE_SIZE? */ #define ELF_EXEC_PAGESIZE 4096 /* * This is the location that an ET_DYN program is loaded if exec'ed. Typical * use of this is to invoke "./ld.so someprog" to test out a new version of * the loader. We need to make sure that it is out of the way of the program * that it will "exec", and that there is sufficient room for the brk. */ #define ELF_ET_DYN_BASE 0x08000000UL /* * This yields a mask that user programs can use to figure out what * instruction set this cpu supports. */ #define ELF_HWCAP (0) /* * This yields a string that ld.so will use to load implementation * specific libraries for optimization. This is more specific in * intent than poking at uname or /proc/cpuinfo. */ #define ELF_PLATFORM (NULL) #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 struct linux_binprm; extern int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp); #endif