1 /* This file is tc-wasm32.h.
2 Copyright (C) 2017-2019 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
22 #define TARGET_FORMAT "elf32-wasm32"
23 #define TARGET_ARCH bfd_arch_wasm32
26 /* WebAssembly is strictly little-endian. */
27 #define TARGET_BYTES_BIG_ENDIAN 0
28 #define md_number_to_chars number_to_chars_littleendian
32 /* No machine-dependent operand expressions. */
35 /* No broken word processing. */
36 #define WORKING_DOT_WORD
38 /* Force some relocations. */
39 #define EXTERN_FORCE_RELOC 1
40 extern int wasm32_force_relocation (struct fix
*);
41 #define TC_FORCE_RELOCATION(fix) wasm32_force_relocation (fix)
42 #define TC_FORCE_RELOCATION_LOCAL(fix) 1
43 #define TC_FORCE_RELOCATION_SUB_SAME(fix,seg) wasm32_force_relocation (fix)
44 #define TC_FORCE_RELOCATION_SUB_ABS(fix,seg) wasm32_force_relocation (fix)
45 #define TC_FORCE_RELOCATION_SUB_LOCAL(fix,seg) wasm32_force_relocation (fix)
46 #define TC_VALIDATE_FIX_SUB(fix,seg) wasm32_force_relocation (fix)
48 /* This is ELF, values passed to md_apply_fix don't include the symbol
50 #define MD_APPLY_SYM_VALUE(FIX) 0
52 /* PC-relative relocations are relative to the relocation offset. */
53 #define MD_PCREL_FROM_SECTION(FIX, SEC) 0
55 #define DWARF2_LINE_MIN_INSN_LENGTH 1
57 /* WebAssembly uses 32-bit addresses. */
58 #define TC_ADDRESS_BYTES() 4
59 #define DWARF2_ADDR_SIZE(bfd) 4
61 /* Enable cfi directives. */
62 #define TARGET_USE_CFIPOP 1
64 /* The stack grows down, and there is no harm in claiming it is only
66 #define DWARF2_CIE_DATA_ALIGNMENT -1
68 /* Define the column that represents the PC. FIXME: this depends on
70 #define DWARF2_DEFAULT_RETURN_COLUMN 36
72 /* Define a hook to setup initial CFI state. */
73 #define tc_cfi_frame_initial_instructions() do { } while (0)
75 #define elf_tc_final_processing()
76 #define md_post_relax_hook
77 #define md_start_line_hook()
78 #define HANDLE_ALIGN(fragP)
81 extern bfd_boolean
wasm32_fix_adjustable (struct fix
*);
82 #define tc_fix_adjustable(FIX) wasm32_fix_adjustable (FIX)
84 /* Type names for blocks and signatures. */
85 #define BLOCK_TYPE_NONE 0x40
86 #define BLOCK_TYPE_I32 0x7f
87 #define BLOCK_TYPE_I64 0x7e
88 #define BLOCK_TYPE_F32 0x7d
89 #define BLOCK_TYPE_F64 0x7c
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