1 /* Assembly macros for 32-bit PowerPC.
2 Copyright (C) 1999-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #include <sysdeps/powerpc/sysdep.h>
23 /* If compiled for profiling, call `_mcount' at the start of each
26 /* The mcount code relies on a the return address being on the stack
27 to locate our caller and so it can restore it; so store one just
29 # define CALL_MCOUNT \
33 bl JUMPTARGET(_mcount);
35 # define CALL_MCOUNT /* Do nothing. */
39 .globl C_SYMBOL_NAME(name); \
40 .type C_SYMBOL_NAME(name),@function; \
46 /* helper macro for accessing the 32-bit powerpc GOT. */
48 #define SETUP_GOT_ACCESS(regname,GOT_LABEL) \
49 bcl 20,31,GOT_LABEL ; \
53 #define EALIGN_W_0 /* No words to insert. */
54 #define EALIGN_W_1 nop
55 #define EALIGN_W_2 nop;nop
56 #define EALIGN_W_3 nop;nop;nop
57 #define EALIGN_W_4 EALIGN_W_3;nop
58 #define EALIGN_W_5 EALIGN_W_4;nop
59 #define EALIGN_W_6 EALIGN_W_5;nop
60 #define EALIGN_W_7 EALIGN_W_6;nop
62 /* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes
63 past a 2^align boundary. */
65 # define EALIGN(name, alignt, words) \
66 .globl C_SYMBOL_NAME(name); \
67 .type C_SYMBOL_NAME(name),@function; \
73 .align ALIGNARG(alignt); \
77 # define EALIGN(name, alignt, words) \
78 .globl C_SYMBOL_NAME(name); \
79 .type C_SYMBOL_NAME(name),@function; \
80 .align ALIGNARG(alignt); \
89 ASM_SIZE_DIRECTIVE(name)
91 #if ! IS_IN(rtld) && defined (ENABLE_LOCK_ELISION)
92 # define ABORT_TRANSACTION \
95 lwz 0,TM_CAPABLE(2); \
98 li 11,_ABORT_SYSCALL; \
103 # define ABORT_TRANSACTION
106 #define DO_CALL(syscall) \
113 # define JUMPTARGET(name) name##@plt
115 # define JUMPTARGET(name) name
118 #if defined SHARED && defined PIC && !defined NO_HIDDEN
119 # undef HIDDEN_JUMPTARGET
120 # define HIDDEN_JUMPTARGET(name) __GI_##name##@local
123 #define PSEUDO(name, syscall_name, args) \
126 DO_CALL (SYS_ify (syscall_name));
130 b __syscall_error@local
131 #define ret PSEUDO_RET
134 #define PSEUDO_END(name) \
137 #define PSEUDO_NOERRNO(name, syscall_name, args) \
140 DO_CALL (SYS_ify (syscall_name));
142 #define PSEUDO_RET_NOERRNO \
144 #define ret_NOERRNO PSEUDO_RET_NOERRNO
146 #undef PSEUDO_END_NOERRNO
147 #define PSEUDO_END_NOERRNO(name) \
150 #define PSEUDO_ERRVAL(name, syscall_name, args) \
153 DO_CALL (SYS_ify (syscall_name));
155 #define PSEUDO_RET_ERRVAL \
157 #define ret_ERRVAL PSEUDO_RET_ERRVAL
159 #undef PSEUDO_END_ERRVAL
160 #define PSEUDO_END_ERRVAL(name) \
163 /* Local labels stripped out by the linker. */
167 #define XGLUE(a,b) a##b
168 #define GLUE(a,b) XGLUE (a,b)
169 #define GENERATE_GOT_LABEL(name) GLUE (.got_label, name)
171 /* Label in text section. */
172 #define C_TEXT(name) name
174 #endif /* __ASSEMBLER__ */