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0ebb9a87 | 1 | /* tc-frv.h -- Header file for tc-frv.c. |
aa820537 AM |
2 | Copyright 2002, 2004, 2005, 2007, 2008, 2009 |
3 | Free Software Foundation, Inc. | |
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4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 9 | the Free Software Foundation; either version 3, or (at your option) |
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10 | any later version. |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to | |
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19 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
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21 | |
22 | #define TC_FRV | |
23 | ||
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24 | #define LISTING_HEADER "FRV GAS " |
25 | ||
26 | /* The target BFD architecture. */ | |
27 | #define TARGET_ARCH bfd_arch_frv | |
28 | ||
996991aa AO |
29 | #define TARGET_FORMAT (frv_md_fdpic_enabled () \ |
30 | ? "elf32-frvfdpic" : "elf32-frv") | |
31 | extern bfd_boolean frv_md_fdpic_enabled (void); | |
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32 | |
33 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
34 | ||
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35 | /* Permit temporary numeric labels. */ |
36 | #define LOCAL_LABELS_FB 1 | |
37 | ||
38 | #define DIFF_EXPR_OK /* .-foo gets turned into PC relative relocs */ | |
39 | ||
40 | /* We don't need to handle .word strangely. */ | |
41 | #define WORKING_DOT_WORD | |
42 | ||
55cf6793 | 43 | /* Values passed to md_apply_fix don't include the symbol value. */ |
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44 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
45 | ||
5a49b8ac | 46 | extern void frv_tomcat_workaround (void); |
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47 | #define md_cleanup frv_tomcat_workaround |
48 | ||
49 | #define md_number_to_chars frv_md_number_to_chars | |
01e1a5bc | 50 | extern void frv_md_number_to_chars (char *, valueT, int); |
0ebb9a87 | 51 | |
5a49b8ac | 52 | extern long frv_relax_frag (fragS *, long); |
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53 | #define md_relax_frag(segment, fragP, stretch) frv_relax_frag(fragP, stretch) |
54 | ||
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55 | #define tc_fix_adjustable(FIX) frv_fix_adjustable (FIX) |
56 | struct fix; | |
5a49b8ac | 57 | extern bfd_boolean frv_fix_adjustable (struct fix *); |
0ebb9a87 | 58 | |
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59 | /* When relaxing, we need to emit various relocs we otherwise wouldn't. */ |
60 | #define TC_FORCE_RELOCATION(fix) frv_force_relocation (fix) | |
5a49b8ac | 61 | extern int frv_force_relocation (struct fix *); |
0ebb9a87 | 62 | |
99d09cdb AO |
63 | /* If we simplify subtractions that aren't SUB_SAME or SUB_ABS, we end |
64 | up with PCrel fixups, but since we don't have any PCrel relocs, we | |
65 | crash. Preventing simplification gets us a good, early error. */ | |
5db484ff | 66 | #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1 |
99d09cdb | 67 | |
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68 | #undef GAS_CGEN_MAX_FIXUPS |
69 | #define GAS_CGEN_MAX_FIXUPS 1 | |
70 | ||
5a49b8ac | 71 | void frv_frob_label (symbolS *); |
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72 | #define tc_frob_label(sym) frv_frob_label(sym) |
73 | ||
74 | #define tc_gen_reloc gas_cgen_tc_gen_reloc | |
75 | ||
76 | #define md_cgen_record_fixup_exp frv_cgen_record_fixup_exp | |
77 | ||
78 | /* Call md_pcrel_from_section(), not md_pcrel_from(). */ | |
a161fe53 | 79 | #define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC) |
5a49b8ac | 80 | extern long md_pcrel_from_section (struct fix *, segT); |
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81 | |
82 | /* After all of the symbols have been adjusted, go over the file looking | |
83 | for any relocations that pic won't support. */ | |
84 | #define tc_frob_file() frv_frob_file () | |
5a49b8ac | 85 | extern void frv_frob_file (void); |
daeea990 AO |
86 | |
87 | /* We don't want 0x00 for code alignment because this generates `add.p | |
88 | gr0, gr0, gr0' patterns. Although it's fine as a nop instruction, | |
89 | it has the VLIW packing bit set, which means if you have a bunch of | |
90 | them in a row and attempt to execute them, you'll exceed the VLIW | |
91 | capacity and fail. This also gets GDB confused sometimes, because | |
92 | it won't set breakpoints in instructions other than the first of a | |
93 | VLIW pack, so you used to be unable to set a breakpoint in the | |
94 | initial instruction of a function that followed such | |
95 | alignment-introduced instructions. | |
96 | ||
97 | We could have arranged to emit `nop' instructions (0x80880000), | |
98 | maybe even VLIW-pack sequences of nop instructions as much as | |
99 | possible for the selected machine type, just in case the alignment | |
100 | code actually happens to run, but this is probably too much effort | |
101 | for little gain. This code is not meant to be run anyway, so just | |
102 | emit nops. */ | |
103 | #define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4) | |
104 | #define HANDLE_ALIGN(FRAGP) do \ | |
105 | if ((FRAGP)->fr_type == rs_align_code) \ | |
106 | { \ | |
107 | valueT count = ((FRAGP)->fr_next->fr_address \ | |
108 | - ((FRAGP)->fr_address + (FRAGP)->fr_fix)); \ | |
2132e3a3 | 109 | char *dest = (FRAGP)->fr_literal + (FRAGP)->fr_fix; \ |
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110 | if ((count & 3) != 0) \ |
111 | { \ | |
112 | memset (dest, 0, (count & 3)); \ | |
113 | (FRAGP)->fr_fix += (count & 3); \ | |
114 | dest += (count & 3); \ | |
115 | count -= (count & 3); \ | |
116 | } \ | |
117 | if (count) \ | |
118 | { \ | |
119 | (FRAGP)->fr_var = 4; \ | |
120 | *dest++ = 0x80; \ | |
121 | *dest++ = 0x88; \ | |
122 | *dest++ = 0x00; \ | |
123 | *dest++ = 0x00; \ | |
124 | } \ | |
125 | } \ | |
126 | while (0) |