1 # Copyright (C) 2014-2019 Free Software Foundation, Inc.
3 # Copying and distribution of this file, with or without modification,
4 # are permitted in any medium without royalty provided the copyright
5 # notice and this notice are preserved.
7 # Many sections come in three flavours. There is the 'real' section,
8 # like ".data". Then there are the per-procedure or per-variable
9 # sections, generated by -ffunction-sections and -fdata-sections in GCC,
10 # and useful for --gc-sections, which for a variable "foo" might be
11 # ".data.foo". Then there are the linkonce sections, for which the linker
12 # eliminates duplicates, which are named like ".gnu.linkonce.d.foo".
13 # The exact correspondences are:
15 # Section Linkonce section
16 # .text .gnu.linkonce.t.foo
17 # .rodata .gnu.linkonce.r.foo
18 # .data .gnu.linkonce.d.foo
19 # .bss .gnu.linkonce.b.foo
20 # .sdata .gnu.linkonce.s.foo
21 # .sbss .gnu.linkonce.sb.foo
22 # .sdata2 .gnu.linkonce.s2.foo
23 # .sbss2 .gnu.linkonce.sb2.foo
24 # .debug_info .gnu.linkonce.wi.foo
25 # .tdata .gnu.linkonce.td.foo
26 # .tbss .gnu.linkonce.tb.foo
27 # .lrodata .gnu.linkonce.lr.foo
28 # .ldata .gnu.linkonce.l.foo
29 # .lbss .gnu.linkonce.lb.foo
31 # Each of these can also have corresponding .rel.* and .rela.* sections.
33 test -z "$ENTRY" && ENTRY=__start
35 OUTPUT_FORMAT("${OUTPUT_FORMAT}")
40 test -n "${RELOCATING}" && cat <<EOF
41 /* Start and end of main stack. Assumes 256K of RAM. */
42 _estack = 0xe0040000 - 4;
43 _sstack = 0xe0040000 - 64K;
50 init : ORIGIN = 0x00000000, LENGTH = 0x0003fffc
51 scr : ORIGIN = 0x0003fffc, LENGTH = 0x00000004
52 rom : ORIGIN = 0x00044000, LENGTH = 0x1ffbc000
53 ram : ORIGIN = 0xe0000000, LENGTH = 0x10000000
54 saferam : ORIGIN = 0xf0000000, LENGTH = 0x10000000
62 .init ${RELOCATING-0} : {
63 KEEP (*(SORT_NONE(.init)))
64 ${RELOCATING+KEEP (*(SORT_NONE(.fini)))}
65 ${RELOCATING+ _einit = .;}
66 } ${RELOCATING+ > init}
68 .text ${RELOCATING-0} : {
69 ${RELOCATING+ _ftext = .;}
71 ${RELOCATING+*(.text.*)}
72 ${RELOCATING+*(.gnu.linkonce.t.*)}
73 ${RELOCATING+ _etext = .;}
74 } ${RELOCATING+ > rom}
76 .ctors ${RELOCATING-0} : {
77 ${CONSTRUCTING+ . = ALIGN(4);}
78 ${CONSTRUCTING+ __CTOR_LIST__ = .;}
79 /* gcc uses crtbegin.o to find the start of
80 the constructors, so we make sure it is
81 first. Because this is a wildcard, it
82 doesn't matter if the user does not
83 actually link against crtbegin.o; the
84 linker won't look for a file to match a
85 wildcard. The wildcard also means that it
86 doesn't matter which directory crtbegin.o
89 KEEP (*crtbegin*.o(.ctors))
91 /* We don't want to include the .ctor section from
92 from the crtend.o file until after the sorted ctors.
93 The .ctor section from the crtend file contains the
94 end of ctors marker and it must be last. */
96 KEEP (*(EXCLUDE_FILE (*crtend*.o) .ctors))
97 ${RELOCATING+KEEP (*(SORT(.ctors.*)))}
99 ${CONSTRUCTING+ __CTOR_END__ = .;}
100 } ${RELOCATING+ > rom}
102 .dtors ${RELOCATING-0} : {
103 ${CONSTRUCTING+ __DTOR_LIST__ = .;}
104 KEEP (*crtbegin*.o(.dtors))
105 KEEP (*(EXCLUDE_FILE (*crtend*.o) .dtors))
106 ${RELOCATING+KEEP (*(SORT(.dtors.*)))}
108 ${CONSTRUCTING+ __DTOR_END__ = .;}
109 } ${RELOCATING+ > rom}
110 .rodata ${RELOCATING-0} : {
111 ${RELOCATING+ . = ALIGN(4);}
112 ${RELOCATING+ _srdata = .;}
113 ${RELOCATING+*(.rdata)}
115 ${RELOCATING+*(.rodata.*)}
116 ${RELOCATING+*(.gnu.linkonce.r.*)}
117 ${RELOCATING+ . = ALIGN(4);}
118 ${RELOCATING+ _erdata = .;}
119 } ${RELOCATING+ > rom}
121 .eh_frame ${RELOCATING-0} :
123 ${RELOCATING+PROVIDE (__eh_frame_begin = .);}
125 ${RELOCATING+ LONG (0);}
126 ${RELOCATING+PROVIDE (__eh_frame_end = .);}
127 } ${RELOCATING+ > rom}
128 .gcc_except_table ${RELOCATING-0} : { *(.gcc_except_table) } ${RELOCATING+ > rom}
129 .jcr ${RELOCATING-0} : { *(.jcr) } ${RELOCATING+ > rom}
131 .data ${RELOCATING-0} : {
132 ${RELOCATING+ . = ALIGN(4);}
133 ${RELOCATING+ _sdata = .;}
135 ${RELOCATING+*(.data.*)}
136 ${RELOCATING+*(.gnu.linkonce.d.*)}
137 ${RELOCATING+ . = ALIGN(4);}
138 ${RELOCATING+ _edata = .;}
139 } ${RELOCATING+ > ram}
140 .bss ${RELOCATING-0} : {
141 ${RELOCATING+ . = ALIGN(4);}
142 ${RELOCATING+ __bss_start = .;}
144 ${RELOCATING+*(.bss.*)}
145 ${RELOCATING+*(.gnu.linkonce.b.*)}
146 ${RELOCATING+*(COMMON)}
147 ${RELOCATING+ . = ALIGN(4);}
148 ${RELOCATING+ __bss_end = .;}
149 ${RELOCATING+ _sheap = .;}
150 } ${RELOCATING+ > ram}
152 saferam ${RELOCATING-0} : {
154 ${RELOCATING+ . = ALIGN(4);}
155 ${RELOCATING+ unitidentry = .;}
156 } ${RELOCATING+ > saferam}
158 /* Stabs debugging sections. */
159 .stab 0 : { *(.stab) }
160 .stabstr 0 : { *(.stabstr) }
161 .stab.excl 0 : { *(.stab.excl) }
162 .stab.exclstr 0 : { *(.stab.exclstr) }
163 .stab.index 0 : { *(.stab.index) }
164 .stab.indexstr 0 : { *(.stab.indexstr) }
166 .comment 0 : { *(.comment) }
170 . $srcdir/scripttempl/DWARF.sc
175 /* Provide a default address for the simulated file-I/O device. */
176 PROVIDE (_sim_fileio_register = 0x2fff0000);
178 /* Provide a default address for the simulated command line device. */
179 PROVIDE (_sim_cmdline_header = 0x2ffe0000);
181 /* Provide a default address for the simulated 1 MHz clock. */
182 PROVIDE (_sim_clock = 0x20002100);}