diff options
Diffstat (limited to 'cpu/bpf.opc')
| -rw-r--r-- | cpu/bpf.opc | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/cpu/bpf.opc b/cpu/bpf.opc deleted file mode 100644 index e70ee04..0000000 --- a/cpu/bpf.opc +++ /dev/null @@ -1,191 +0,0 @@ -/* EBPF opcode support. -*- c -*- - - Copyright (C) 2019 Free Software Foundation, Inc. - - Contributed by Oracle, Inc. - - This file is part of the GNU Binutils and of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - 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. */ - -/* - Each section is delimited with start and end markers. - - <arch>-opc.h additions use: "-- opc.h" - <arch>-opc.c additions use: "-- opc.c" - <arch>-asm.c additions use: "-- asm.c" - <arch>-dis.c additions use: "-- dis.c" - <arch>-ibd.h additions use: "-- ibd.h". */ - -/* -- opc.h */ - -#undef CGEN_DIS_HASH_SIZE -#define CGEN_DIS_HASH_SIZE 1 - -#undef CGEN_DIS_HASH -#define CGEN_DIS_HASH(buffer, value) 0 - -/* Allows reason codes to be output when assembler errors occur. */ -#define CGEN_VERBOSE_ASSEMBLER_ERRORS - -#define CGEN_VALIDATE_INSN_SUPPORTED -extern int bpf_cgen_insn_supported (CGEN_CPU_DESC, const CGEN_INSN *); - - -/* -- opc.c */ - -/* -- asm.c */ - -/* Parse a signed 64-bit immediate. */ - -static const char * -parse_imm64 (CGEN_CPU_DESC cd, - const char **strp, - int opindex, - int64_t *valuep) -{ - bfd_vma value; - enum cgen_parse_operand_result result; - const char *errmsg; - - errmsg = (* cd->parse_operand_fn) - (cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE, - &result, &value); - if (!errmsg) - *valuep = value; - - return errmsg; -} - -/* Endianness size operands are integer immediates whose values can be - 16, 32 or 64. */ - -static const char * -parse_endsize (CGEN_CPU_DESC cd, - const char **strp, - int opindex, - unsigned long *valuep) -{ - const char *errmsg; - - errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); - if (errmsg) - return errmsg; - - switch (*valuep) - { - case 16: - case 32: - case 64: - break; - default: - return _("expected 16, 32 or 64 in"); - } - - return NULL; -} - -/* Special check to ensure that the right instruction variant is used - for the given endianness induced by the ISA selected in the CPU. - See bpf.cpu for a discussion on how eBPF is really two instruction - sets. */ - -int -bpf_cgen_insn_supported (CGEN_CPU_DESC cd, const CGEN_INSN *insn) -{ - CGEN_BITSET isas = CGEN_INSN_BITSET_ATTR_VALUE (insn, CGEN_INSN_ISA); - - return cgen_bitset_intersect_p (&isas, cd->isas); -} - - -/* -- dis.c */ - -/* We need to customize the disassembler a bit: - - Use 8 bytes per line by default. -*/ - -#define CGEN_PRINT_INSN bpf_print_insn - -static int -bpf_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info) -{ - bfd_byte buf[CGEN_MAX_INSN_SIZE]; - int buflen; - int status; - - info->bytes_per_chunk = 1; - info->bytes_per_line = 8; - - /* Attempt to read the base part of the insn. */ - buflen = cd->base_insn_bitsize / 8; - status = (*info->read_memory_func) (pc, buf, buflen, info); - - /* Try again with the minimum part, if min < base. */ - if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize)) - { - buflen = cd->min_insn_bitsize / 8; - status = (*info->read_memory_func) (pc, buf, buflen, info); - } - - if (status != 0) - { - (*info->memory_error_func) (status, pc, info); - return -1; - } - - return print_insn (cd, pc, info, buf, buflen); -} - -/* Signed immediates should be printed in hexadecimal. */ - -static void -print_immediate (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, - void *dis_info, - int64_t value, - unsigned int attrs ATTRIBUTE_UNUSED, - bfd_vma pc ATTRIBUTE_UNUSED, - int length ATTRIBUTE_UNUSED) -{ - disassemble_info *info = (disassemble_info *) dis_info; - - if (value <= 9) - (*info->fprintf_func) (info->stream, "%" PRId64, value); - else - (*info->fprintf_func) (info->stream, "%#" PRIx64, value); - - /* This is to avoid -Wunused-function for print_normal. */ - if (0) - print_normal (cd, dis_info, value, attrs, pc, length); -} - -/* Endianness bit sizes should be printed in decimal. */ - -static void -print_endsize (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, - void *dis_info, - unsigned long value, - unsigned int attrs ATTRIBUTE_UNUSED, - bfd_vma pc ATTRIBUTE_UNUSED, - int length ATTRIBUTE_UNUSED) -{ - disassemble_info *info = (disassemble_info *) dis_info; - (*info->fprintf_func) (info->stream, "%lu", value); -} - - -/* -- */ - |