ppc-asm.h revision 117395 
1/* PowerPC asm definitions for GNU C.  */
2/* Under winnt, 1) gas supports the following as names and 2) in particular
3   defining "toc" breaks the FUNC_START macro as ".toc" becomes ".2" */
4
5#define r0	0
6#define sp	1
7#define toc	2
8#define r3	3
9#define r4	4
10#define r5	5
11#define r6	6
12#define r7	7
13#define r8	8
14#define r9	9
15#define r10	10
16#define r11	11
17#define r12	12
18#define r13	13
19#define r14	14
20#define r15	15
21#define r16	16
22#define r17	17
23#define r18	18
24#define r19     19
25#define r20	20
26#define r21	21
27#define r22	22
28#define r23	23
29#define r24	24
30#define r25	25
31#define r26	26
32#define r27	27
33#define r28	28
34#define r29	29
35#define r30	30
36#define r31	31
37
38#define cr0	0
39#define cr1	1
40#define cr2	2
41#define cr3	3
42#define cr4	4
43#define cr5	5
44#define cr6	6
45#define cr7	7
46
47#define f0	0
48#define f1	1
49#define f2	2
50#define f3	3
51#define f4	4
52#define f5	5
53#define f6	6
54#define f7	7
55#define f8	8
56#define f9	9
57#define f10	10
58#define f11	11
59#define f12	12
60#define f13	13
61#define f14	14
62#define f15	15
63#define f16	16
64#define f17	17
65#define f18	18
66#define f19     19
67#define f20	20
68#define f21	21
69#define f22	22
70#define f23	23
71#define f24	24
72#define f25	25
73#define f26	26
74#define f27	27
75#define f28	28
76#define f29	29
77#define f30	30
78#define f31	31
79
80/*
81 * Macros to glue together two tokens.
82 */
83
84#ifdef __STDC__
85#define XGLUE(a,b) a##b
86#else
87#define XGLUE(a,b) a/**/b
88#endif
89
90#define GLUE(a,b) XGLUE(a,b)
91
92/*
93 * Macros to begin and end a function written in assembler.  If -mcall-aixdesc
94 * or -mcall-nt, create a function descriptor with the given name, and create
95 * the real function with one or two leading periods respectively.
96 */
97
98#ifdef _RELOCATABLE
99#define DESC_SECTION ".got2"
100#else
101#define DESC_SECTION ".got1"
102#endif
103
104#if defined(_CALL_AIXDESC)
105#define FUNC_NAME(name) GLUE(.,name)
106#define JUMP_TARGET(name) FUNC_NAME(name)
107#define FUNC_START(name) \
108	.section DESC_SECTION,"aw"; \
109name: \
110	.long GLUE(.,name); \
111	.long _GLOBAL_OFFSET_TABLE_; \
112	.long 0; \
113	.previous; \
114	.type GLUE(.,name),@function; \
115	.globl name; \
116	.globl GLUE(.,name); \
117GLUE(.,name):
118
119#define FUNC_END(name) \
120GLUE(.L,name): \
121	.size GLUE(.,name),GLUE(.L,name)-GLUE(.,name)
122
123#elif defined (__powerpc64__)
124#define FUNC_NAME(name) GLUE(.,name)
125#define JUMP_TARGET(name) FUNC_NAME(name)
126#define FUNC_START(name) \
127	.section ".opd","aw"; \
128name: \
129	.quad GLUE(.,name); \
130	.quad .TOC.@tocbase; \
131	.quad 0; \
132	.previous; \
133	.type GLUE(.,name),@function; \
134	.globl name; \
135	.globl GLUE(.,name); \
136GLUE(.,name):
137
138#define FUNC_END(name) \
139GLUE(.L,name): \
140	.size GLUE(.,name),GLUE(.L,name)-GLUE(.,name)
141
142#else
143#define FUNC_NAME(name) GLUE(__USER_LABEL_PREFIX__,name)
144#if defined __PIC__ || defined __pic__
145#define JUMP_TARGET(name) FUNC_NAME(name@plt)
146#else
147#define JUMP_TARGET(name) FUNC_NAME(name)
148#endif
149#define FUNC_START(name) \
150	.type FUNC_NAME(name),@function; \
151	.globl FUNC_NAME(name); \
152FUNC_NAME(name):
153
154#define FUNC_END(name) \
155GLUE(.L,name): \
156	.size FUNC_NAME(name),GLUE(.L,name)-FUNC_NAME(name)
157#endif
158
159