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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154// SPDX-License-Identifier: GPL-2.0-or-later
#include <stdio.h>#include <stdlib.h>#include <objtool/check.h>#include <objtool/disas.h>#include <objtool/elf.h>#include <objtool/arch.h>#include <objtool/warn.h>#include <objtool/builtin.h>
const char *arch_reg_name[CFI_NUM_REGS] = { "r0", "sp", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", "ra"};
int arch_ftrace_match(const char *name){ return !strcmp(name, "_mcount");}
s64 arch_insn_adjusted_addend(struct instruction *insn, struct reloc *reloc){ return reloc_addend(reloc);}
bool arch_callee_saved_reg(unsigned char reg){ return false;}
int arch_decode_hint_reg(u8 sp_reg, int *base){ exit(-1);}
const char *arch_nop_insn(int len){ exit(-1);}
const char *arch_ret_insn(int len){ exit(-1);}
int arch_decode_instruction(struct objtool_file *file, const struct section *sec, unsigned long offset, unsigned int maxlen, struct instruction *insn){ unsigned int opcode; enum insn_type typ; unsigned long imm; u32 ins;
ins = bswap_if_needed(file->elf, *(u32 *)(sec->data->d_buf + offset)); opcode = ins >> 26; typ = INSN_OTHER; imm = 0;
switch (opcode) { case 18: /* b[l][a] */ if (ins == 0x48000005) /* bl .+4 */ typ = INSN_OTHER; else if (ins & 1) /* bl[a] */ typ = INSN_CALL; else /* b[a] */ typ = INSN_JUMP_UNCONDITIONAL;
imm = ins & 0x3fffffc; if (imm & 0x2000000) imm -= 0x4000000; imm |= ins & 2; /* AA flag */ break; }
if (opcode == 1) insn->len = 8; else insn->len = 4;
insn->type = typ; insn->immediate = imm;
return 0;}
unsigned long arch_jump_destination(struct instruction *insn){ if (insn->immediate & 2) return insn->immediate & ~2;
return insn->offset + insn->immediate;}
bool arch_pc_relative_reloc(struct reloc *reloc){ /* * The powerpc build only allows certain relocation types, see * relocs_check.sh, and none of those accepted are PC relative. */ return false;}
void arch_initial_func_cfi_state(struct cfi_init_state *state){ int i;
for (i = 0; i < CFI_NUM_REGS; i++) { state->regs[i].base = CFI_UNDEFINED; state->regs[i].offset = 0; }
/* initial CFA (call frame address) */ state->cfa.base = CFI_SP; state->cfa.offset = 0;
/* initial LR (return address) */ state->regs[CFI_RA].base = CFI_CFA; state->regs[CFI_RA].offset = 0;}
unsigned int arch_reloc_size(struct reloc *reloc){ switch (reloc_type(reloc)) { case R_PPC_REL32: case R_PPC_ADDR32: case R_PPC_UADDR32: case R_PPC_PLT32: case R_PPC_PLTREL32: return 4; default: return 8; }}
#ifdef DISAS
int arch_disas_info_init(struct disassemble_info *dinfo){ return disas_info_init(dinfo, bfd_arch_powerpc, bfd_mach_ppc, bfd_mach_ppc64, NULL);}
#endif /* DISAS */