217 lines
5.6 KiB
C
217 lines
5.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* ELF definitions for the Hexagon architecture
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*
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* Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
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*/
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#ifndef __ASM_ELF_H
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#define __ASM_ELF_H
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#include <asm/ptrace.h>
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#include <asm/user.h>
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#include <linux/elf-em.h>
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struct elf32_hdr;
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/*
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* ELF header e_flags defines.
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*/
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/* should have stuff like "CPU type" and maybe "ABI version", etc */
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/* Hexagon relocations */
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/* V2 */
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#define R_HEXAGON_NONE 0
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#define R_HEXAGON_B22_PCREL 1
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#define R_HEXAGON_B15_PCREL 2
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#define R_HEXAGON_B7_PCREL 3
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#define R_HEXAGON_LO16 4
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#define R_HEXAGON_HI16 5
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#define R_HEXAGON_32 6
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#define R_HEXAGON_16 7
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#define R_HEXAGON_8 8
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#define R_HEXAGON_GPREL16_0 9
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#define R_HEXAGON_GPREL16_1 10
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#define R_HEXAGON_GPREL16_2 11
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#define R_HEXAGON_GPREL16_3 12
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#define R_HEXAGON_HL16 13
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/* V3 */
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#define R_HEXAGON_B13_PCREL 14
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/* V4 */
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#define R_HEXAGON_B9_PCREL 15
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/* V4 (extenders) */
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#define R_HEXAGON_B32_PCREL_X 16
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#define R_HEXAGON_32_6_X 17
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/* V4 (extended) */
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#define R_HEXAGON_B22_PCREL_X 18
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#define R_HEXAGON_B15_PCREL_X 19
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#define R_HEXAGON_B13_PCREL_X 20
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#define R_HEXAGON_B9_PCREL_X 21
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#define R_HEXAGON_B7_PCREL_X 22
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#define R_HEXAGON_16_X 23
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#define R_HEXAGON_12_X 24
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#define R_HEXAGON_11_X 25
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#define R_HEXAGON_10_X 26
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#define R_HEXAGON_9_X 27
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#define R_HEXAGON_8_X 28
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#define R_HEXAGON_7_X 29
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#define R_HEXAGON_6_X 30
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/* V2 PIC */
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#define R_HEXAGON_32_PCREL 31
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#define R_HEXAGON_COPY 32
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#define R_HEXAGON_GLOB_DAT 33
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#define R_HEXAGON_JMP_SLOT 34
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#define R_HEXAGON_RELATIVE 35
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#define R_HEXAGON_PLT_B22_PCREL 36
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#define R_HEXAGON_GOTOFF_LO16 37
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#define R_HEXAGON_GOTOFF_HI16 38
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#define R_HEXAGON_GOTOFF_32 39
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#define R_HEXAGON_GOT_LO16 40
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#define R_HEXAGON_GOT_HI16 41
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#define R_HEXAGON_GOT_32 42
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#define R_HEXAGON_GOT_16 43
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/*
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* ELF register definitions..
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*/
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typedef unsigned long elf_greg_t;
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typedef struct user_regs_struct elf_gregset_t;
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#define ELF_NGREG (sizeof(elf_gregset_t)/sizeof(unsigned long))
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/* Placeholder */
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typedef unsigned long elf_fpregset_t;
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/*
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* Bypass the whole "regsets" thing for now and use the define.
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*/
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#if CONFIG_HEXAGON_ARCH_VERSION >= 4
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#define CS_COPYREGS(DEST,REGS) \
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do {\
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DEST.cs0 = REGS->cs0;\
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DEST.cs1 = REGS->cs1;\
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} while (0)
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#else
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#define CS_COPYREGS(DEST,REGS)
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#endif
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#define ELF_CORE_COPY_REGS(DEST, REGS) \
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do { \
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DEST.r0 = REGS->r00; \
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DEST.r1 = REGS->r01; \
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DEST.r2 = REGS->r02; \
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DEST.r3 = REGS->r03; \
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DEST.r4 = REGS->r04; \
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DEST.r5 = REGS->r05; \
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DEST.r6 = REGS->r06; \
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DEST.r7 = REGS->r07; \
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DEST.r8 = REGS->r08; \
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DEST.r9 = REGS->r09; \
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DEST.r10 = REGS->r10; \
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DEST.r11 = REGS->r11; \
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DEST.r12 = REGS->r12; \
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DEST.r13 = REGS->r13; \
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DEST.r14 = REGS->r14; \
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DEST.r15 = REGS->r15; \
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DEST.r16 = REGS->r16; \
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DEST.r17 = REGS->r17; \
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DEST.r18 = REGS->r18; \
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DEST.r19 = REGS->r19; \
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DEST.r20 = REGS->r20; \
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DEST.r21 = REGS->r21; \
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DEST.r22 = REGS->r22; \
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DEST.r23 = REGS->r23; \
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DEST.r24 = REGS->r24; \
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DEST.r25 = REGS->r25; \
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DEST.r26 = REGS->r26; \
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DEST.r27 = REGS->r27; \
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DEST.r28 = REGS->r28; \
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DEST.r29 = pt_psp(REGS); \
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DEST.r30 = REGS->r30; \
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DEST.r31 = REGS->r31; \
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DEST.sa0 = REGS->sa0; \
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DEST.lc0 = REGS->lc0; \
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DEST.sa1 = REGS->sa1; \
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DEST.lc1 = REGS->lc1; \
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DEST.m0 = REGS->m0; \
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DEST.m1 = REGS->m1; \
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DEST.usr = REGS->usr; \
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DEST.p3_0 = REGS->preds; \
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DEST.gp = REGS->gp; \
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DEST.ugp = REGS->ugp; \
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CS_COPYREGS(DEST,REGS); \
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DEST.pc = pt_elr(REGS); \
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DEST.cause = pt_cause(REGS); \
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DEST.badva = pt_badva(REGS); \
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} while (0);
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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* Checks the machine and ABI type.
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*/
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#define elf_check_arch(hdr) ((hdr)->e_machine == EM_HEXAGON)
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS32
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#define ELF_DATA ELFDATA2LSB
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#define ELF_ARCH EM_HEXAGON
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#if CONFIG_HEXAGON_ARCH_VERSION == 2
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#define ELF_CORE_EFLAGS 0x1
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#endif
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#if CONFIG_HEXAGON_ARCH_VERSION == 3
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#define ELF_CORE_EFLAGS 0x2
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#endif
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#if CONFIG_HEXAGON_ARCH_VERSION == 4
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#define ELF_CORE_EFLAGS 0x3
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#endif
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/*
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* Some architectures have ld.so set up a pointer to a function
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* to be registered using atexit, to facilitate cleanup. So that
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* static executables will be well-behaved, we would null the register
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* in question here, in the pt_regs structure passed. For now,
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* leave it a null macro.
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*/
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#define ELF_PLAT_INIT(regs, load_addr) do { } while (0)
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#define CORE_DUMP_USE_REGSET
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/* Hrm is this going to cause problems for changing PAGE_SIZE? */
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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/*
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* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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* use of this is to invoke "./ld.so someprog" to test out a new version of
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* the loader. We need to make sure that it is out of the way of the program
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* that it will "exec", and that there is sufficient room for the brk.
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*/
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#define ELF_ET_DYN_BASE 0x08000000UL
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/*
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* This yields a mask that user programs can use to figure out what
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* instruction set this cpu supports.
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*/
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#define ELF_HWCAP (0)
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/*
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* This yields a string that ld.so will use to load implementation
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* specific libraries for optimization. This is more specific in
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* intent than poking at uname or /proc/cpuinfo.
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*/
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#define ELF_PLATFORM (NULL)
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#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
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struct linux_binprm;
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extern int arch_setup_additional_pages(struct linux_binprm *bprm,
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int uses_interp);
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#endif
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