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1.1 root 1: /* Definitions of target machine for GNU compiler.
2: Commodore Amiga A3000UX version.
3:
4: Copyright (C) 1991 Free Software Foundation, Inc.
5:
6: This file is part of GNU CC.
7:
8: GNU CC is free software; you can redistribute it and/or modify
9: it under the terms of the GNU General Public License as published by
10: the Free Software Foundation; either version 1, or (at your option)
11: any later version.
12:
13: GNU CC is distributed in the hope that it will be useful,
14: but WITHOUT ANY WARRANTY; without even the implied warranty of
15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: GNU General Public License for more details.
17:
18: You should have received a copy of the GNU General Public License
19: along with GNU CC; see the file COPYING. If not, write to
20: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21:
22: #include "m68k/m68kv4.h"
23:
24: /* [email protected] says dots are no good either. */
25: #define NO_DOT_IN_LABEL
26:
27: /* Alter assembler syntax for fsgldiv and fsglmul.
28: It is highly likely that this is a generic SGS m68k assembler dependency.
29: If so, it should eventually be handled in the m68k/sgs.h ASM_OUTPUT_OPCODE
30: macro, like the other SGS assembler quirks. -fnf */
31:
32: #define FSGLDIV_USE_S /* Use fsgldiv.s, not fsgldiv.x */
33: #define FSGLMUL_USE_S /* Use fsglmul.s, not fsglmul.x */
34:
35: /* Names to predefine in the preprocessor for this target machine. For the
36: Amiga, these definitions match those of the native AT&T compiler. Note
37: that we override the definition in m68kv4.h, where SVR4 is defined and
38: AMIX isn't. */
39:
40: #undef CPP_PREDEFINES
41: #define CPP_PREDEFINES \
42: "-Dm68k -Dunix -DAMIX -D__svr4__ -D__motorola__ \
43: -Amachine(m68k) -Acpu(m68k) -Asystem(unix) -Alint(off)"
44:
45: /* At end of a switch table, define LDnnn iff the symbol LInnn was defined.
46: Some SGS assemblers have a bug such that "Lnnn-LInnn-2.b(pc,d0.l*2)"
47: fails to assemble. Luckily "Lnnn(pc,d0.l*2)" produces the results
48: we want. This difference can be accommodated by making the assembler
49: define such "LDnnn" to be either "Lnnn-LInnn-2.b", "Lnnn", or any other
50: string, as necessary. This is accomplished via the ASM_OUTPUT_CASE_END
51: macro. (the Amiga assembler has this bug) */
52:
53: #undef ASM_OUTPUT_CASE_END
54: #define ASM_OUTPUT_CASE_END(FILE,NUM,TABLE) \
55: do { \
56: if (switch_table_difference_label_flag) \
57: asm_fprintf ((FILE), "\t%s %LLD%d,%LL%d\n", SET_ASM_OP, (NUM), (NUM));\
58: switch_table_difference_label_flag = 0; \
59: } while (0)
60:
61: int switch_table_difference_label_flag;
62:
63: /* This says how to output assembler code to declare an
64: uninitialized external linkage data object. Under SVR4,
65: the linker seems to want the alignment of data objects
66: to depend on their types. We do exactly that here.
67: [This macro overrides the one in svr4.h because the amix assembler
68: has a minimum default alignment of 4, and will not accept any
69: explicit alignment smaller than this. -fnf] */
70:
71: #undef ASM_OUTPUT_ALIGNED_COMMON
72: #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
73: do { \
74: fputs ("\t.comm\t", (FILE)); \
75: assemble_name ((FILE), (NAME)); \
76: fprintf ((FILE), ",%u,%u\n", (SIZE), MAX ((ALIGN) / BITS_PER_UNIT, 4)); \
77: } while (0)
78:
79: /* This says how to output assembler code to declare an
80: uninitialized internal linkage data object. Under SVR4,
81: the linker seems to want the alignment of data objects
82: to depend on their types. We do exactly that here.
83: [This macro overrides the one in svr4.h because the amix assembler
84: has a minimum default alignment of 4, and will not accept any
85: explicit alignment smaller than this. -fnf] */
86:
87: #undef ASM_OUTPUT_ALIGNED_LOCAL
88: #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
89: do { \
90: fprintf ((FILE), "\t%s\t%s,%u,%u\n", \
91: BSS_ASM_OP, (NAME), (SIZE), MAX ((ALIGN) / BITS_PER_UNIT, 4)); \
92: } while (0)
93:
94: /* This definition of ASM_OUTPUT_ASCII is the same as the one in m68k/sgs.h,
95: which has been overridden by the one in svr4.h. However, we can't use
96: the one in svr4.h because the amix assembler croaks on some of the
97: strings that it emits (such as .string "\"%s\"\n"). */
98:
99: #undef ASM_OUTPUT_ASCII
100: #define ASM_OUTPUT_ASCII(FILE,PTR,LEN) \
101: { \
102: register int sp = 0, lp = 0, ch; \
103: fprintf ((FILE), "\t%s ", BYTE_ASM_OP); \
104: do { \
105: ch = (PTR)[sp]; \
106: if (ch > ' ' && ! (ch & 0x80) && ch != '\\') \
107: { \
108: fprintf ((FILE), "'%c", ch); \
109: } \
110: else \
111: { \
112: fprintf ((FILE), "0x%x", ch); \
113: } \
114: if (++sp < (LEN)) \
115: { \
116: if ((sp % 10) == 0) \
117: { \
118: fprintf ((FILE), "\n\t%s ", BYTE_ASM_OP); \
119: } \
120: else \
121: { \
122: putc (',', (FILE)); \
123: } \
124: } \
125: } while (sp < (LEN)); \
126: putc ('\n', (FILE)); \
127: }
128:
129: /* The following should be unnecessary as a result of PIC_CASE_VECTOR_ADDRESS.
130: But [email protected] says they are still needed. */
131:
132: /* Override these for the sake of an assembler bug: the Amix
133: assembler can't handle .LC0@GOT syntax. This pollutes the final
134: table for shared librarys but what's a poor soul to do; sigh... RFH */
135:
136: #undef ASM_GENERATE_INTERNAL_LABEL
137: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
138: if (flag_pic && !strcmp(PREFIX,"LC")) \
139: sprintf (LABEL, "*%s%%%d", PREFIX, NUM); \
140: else \
141: sprintf (LABEL, "*%s%s%d", LOCAL_LABEL_PREFIX, PREFIX, NUM)
142:
143: #undef ASM_OUTPUT_INTERNAL_LABEL
144: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
145: if (flag_pic && !strcmp(PREFIX,"LC")) \
146: asm_fprintf (FILE, "%s%%%d:\n", PREFIX, NUM); \
147: else \
148: asm_fprintf (FILE, "%0L%s%d:\n", PREFIX, NUM)
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