1 /* Generic asm macros used on many machines.
2 Copyright (C) 1991,92,93,96,98,2002,2003 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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 #include <sys/syscall.h>
24 /* Define a macro we can use to construct the asm name for a C symbol. */
25 #ifndef __UCLIBC_UNDERSCORES__
27 #define C_LABEL(name) name##:
29 #define C_LABEL(name) name/**/:
33 #define C_LABEL(name) _##name##:
35 #define C_LABEL(name) _/**/name/**/:
42 /* Mark the end of function named SYM. This is used on some platforms
43 to generate correct debugging information. */
49 #define JUMPTARGET(sym) sym
52 /* Macros to generate eh_frame unwind information. */
53 # ifdef HAVE_ASM_CFI_DIRECTIVES
54 # define cfi_startproc .cfi_startproc
55 # define cfi_endproc .cfi_endproc
56 # define cfi_def_cfa(reg, off) .cfi_def_cfa reg, off
57 # define cfi_def_cfa_register(reg) .cfi_def_cfa_register reg
58 # define cfi_def_cfa_offset(off) .cfi_def_cfa_offset off
59 # define cfi_adjust_cfa_offset(off) .cfi_adjust_cfa_offset off
60 # define cfi_offset(reg, off) .cfi_offset reg, off
61 # define cfi_rel_offset(reg, off) .cfi_rel_offset reg, off
62 # define cfi_register(r1, r2) .cfi_register r1, r2
63 # define cfi_return_column(reg) .cfi_return_column reg
64 # define cfi_restore(reg) .cfi_restore reg
65 # define cfi_same_value(reg) .cfi_same_value reg
66 # define cfi_undefined(reg) .cfi_undefined reg
67 # define cfi_remember_state .cfi_remember_state
68 # define cfi_restore_state .cfi_restore_state
69 # define cfi_window_save .cfi_window_save
70 # define cfi_personality(enc, exp) .cfi_personality enc, exp
71 # define cfi_lsda(enc, exp) .cfi_lsda enc, exp
74 # define cfi_startproc
76 # define cfi_def_cfa(reg, off)
77 # define cfi_def_cfa_register(reg)
78 # define cfi_def_cfa_offset(off)
79 # define cfi_adjust_cfa_offset(off)
80 # define cfi_offset(reg, off)
81 # define cfi_rel_offset(reg, off)
82 # define cfi_register(r1, r2)
83 # define cfi_return_column(reg)
84 # define cfi_restore(reg)
85 # define cfi_same_value(reg)
86 # define cfi_undefined(reg)
87 # define cfi_remember_state
88 # define cfi_restore_state
89 # define cfi_window_save
90 # define cfi_personality(enc, exp)
91 # define cfi_lsda(enc, exp)
94 #else /* ! ASSEMBLER */
95 # ifdef HAVE_ASM_CFI_DIRECTIVES
96 # define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
97 # define CFI_STRINGIFY2(Name) #Name
98 # define CFI_STARTPROC ".cfi_startproc"
99 # define CFI_ENDPROC ".cfi_endproc"
100 # define CFI_DEF_CFA(reg, off) \
101 ".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
102 # define CFI_DEF_CFA_REGISTER(reg) \
103 ".cfi_def_cfa_register " CFI_STRINGIFY(reg)
104 # define CFI_DEF_CFA_OFFSET(off) \
105 ".cfi_def_cfa_offset " CFI_STRINGIFY(off)
106 # define CFI_ADJUST_CFA_OFFSET(off) \
107 ".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
108 # define CFI_OFFSET(reg, off) \
109 ".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
110 # define CFI_REL_OFFSET(reg, off) \
111 ".cfi_rel_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
112 # define CFI_REGISTER(r1, r2) \
113 ".cfi_register " CFI_STRINGIFY(r1) "," CFI_STRINGIFY(r2)
114 # define CFI_RETURN_COLUMN(reg) \
115 ".cfi_return_column " CFI_STRINGIFY(reg)
116 # define CFI_RESTORE(reg) \
117 ".cfi_restore " CFI_STRINGIFY(reg)
118 # define CFI_UNDEFINED(reg) \
119 ".cfi_undefined " CFI_STRINGIFY(reg)
120 # define CFI_REMEMBER_STATE \
121 ".cfi_remember_state"
122 # define CFI_RESTORE_STATE \
124 # define CFI_WINDOW_SAVE \
126 # define CFI_PERSONALITY(enc, exp) \
127 ".cfi_personality " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
128 # define CFI_LSDA(enc, exp) \
129 ".cfi_lsda " CFI_STRINGIFY(enc) "," CFI_STRINGIFY(exp)
131 # define CFI_STARTPROC
133 # define CFI_DEF_CFA(reg, off)
134 # define CFI_DEF_CFA_REGISTER(reg)
135 # define CFI_DEF_CFA_OFFSET(off)
136 # define CFI_ADJUST_CFA_OFFSET(off)
137 # define CFI_OFFSET(reg, off)
138 # define CFI_REL_OFFSET(reg, off)
139 # define CFI_REGISTER(r1, r2)
140 # define CFI_RETURN_COLUMN(reg)
141 # define CFI_RESTORE(reg)
142 # define CFI_UNDEFINED(reg)
143 # define CFI_REMEMBER_STATE
144 # define CFI_RESTORE_STATE
145 # define CFI_WINDOW_SAVE
146 # define CFI_PERSONALITY(enc, exp)
147 # define CFI_LSDA(enc, exp)
150 #endif /* __ASSEMBLER__ */
152 /* Values used for encoding parameter of cfi_personality and cfi_lsda. */
153 #define DW_EH_PE_absptr 0x00
154 #define DW_EH_PE_omit 0xff
155 #define DW_EH_PE_uleb128 0x01
156 #define DW_EH_PE_udata2 0x02
157 #define DW_EH_PE_udata4 0x03
158 #define DW_EH_PE_udata8 0x04
159 #define DW_EH_PE_sleb128 0x09
160 #define DW_EH_PE_sdata2 0x0a
161 #define DW_EH_PE_sdata4 0x0b
162 #define DW_EH_PE_sdata8 0x0c
163 #define DW_EH_PE_signed 0x08
164 #define DW_EH_PE_pcrel 0x10
165 #define DW_EH_PE_textrel 0x20
166 #define DW_EH_PE_datarel 0x30
167 #define DW_EH_PE_funcrel 0x40
168 #define DW_EH_PE_aligned 0x50
169 #define DW_EH_PE_indirect 0x80