blob: c6fa13a5b1310e8332e918f394c4a1e61dcf541b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/*
* Linker script for libmaple.
*
* Original author "lanchon" from ST forums, with modifications by LeafLabs.
*/
OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
ENTRY(_start)
SEARCH_DIR(.)
/*
* Link against libgcc, libc, and libm
*/
GROUP(libgcc.a libc.a libm.a)
/*
* These force the linker to search for vector table symbols.
*
* These symbols vary by STM32 family (and also within families).
* It's up to the build system to configure the link's search path
* properly for the target MCU.
*/
INCLUDE vector_symbols.inc
/* STM32 vector table. See stm32_vector_table.S */
EXTERN(__cs3_stm32_vector_table)
/* libcs3 C start function. See cs3.h */
EXTERN(__cs3_start_c)
/* main entry point */
EXTERN(main)
/* Initial stack pointer value. */
EXTERN(__cs3_stack)
PROVIDE(__cs3_stack = __cs3_region_start_ram + LENGTH(ram));
/* Reset vector and chip reset entry point. See start.S */
EXTERN(_start)
PROVIDE(__cs3_reset = _start);
/* Heap boundaries, for libmaple */
EXTERN(_lm_heap_start);
EXTERN(_lm_heap_end);
SECTIONS
{
/* TODO pull out rodata and stick into separate sections */
.text :
{
__text_start = .;
/*
* STM32 vector table. Leave this here. Yes, really.
*/
*(.stm32.interrupt_vector)
/*
* Program code and vague linking
*/
*(.text .text.* .gnu.linkonce.t.*)
*(.plt)
*(.gnu.warning)
*(.glue_7t) *(.glue_7) *(.vfp11_veneer)
*(.ARM.extab* .gnu.linkonce.armextab.*)
*(.gcc_except_table)
*(.eh_frame_hdr)
*(.eh_frame)
. = ALIGN(4);
KEEP(*(.init))
. = ALIGN(4);
__preinit_array_start = .;
KEEP (*(.preinit_array))
__preinit_array_end = .;
. = ALIGN(4);
__init_array_start = .;
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
__init_array_end = .;
. = ALIGN(0x4);
KEEP (*crtbegin.o(.ctors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*crtend.o(.ctors))
. = ALIGN(4);
KEEP(*(.fini))
. = ALIGN(4);
__fini_array_start = .;
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
__fini_array_end = .;
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*crtend.o(.dtors))
/*
* struct __cs3_region used during __cs3_start_c
*/
. = ALIGN(4);
__cs3_regions = .;
LONG (0) /* flags */
LONG (__cs3_region_init_ram) /* initial contents */
LONG (__cs3_region_start_ram) /* start address */
LONG (__cs3_region_init_size_ram) /* size of initial data */
LONG (__cs3_region_zero_size_ram) /* additional size to be zeroed */
} > REGION_TEXT
/*
* Read-only data
*/
.rodata :
{
*(.rodata .rodata.* .gnu.linkonce.r.*)
} > REGION_RODATA
/*
* .ARM.exidx exception unwinding; mandated by ARM's C++ ABI
*/
__exidx_start = .;
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > REGION_RODATA
__exidx_end = .;
/*
* End of text
*/
.text.align :
{
. = ALIGN(8);
_etext = .;
} > REGION_TEXT
/*
* .USER_FLASH: We allow users to allocate into Flash here
*/
.USER_FLASH :
{
*(.USER_FLASH)
} > REGION_RODATA
/*
* .data
*/
.data :
{
__cs3_region_start_ram = DEFINED(_FLASH_BUILD) ? . : __text_start;
*(.got.plt) *(.got)
*(.data .data.* .gnu.linkonce.d.*)
/*
* Heap: Linker scripts may choose a custom heap by overriding
* _lm_heap_start and _lm_heap_end. Otherwise, the heap is in
* internal SRAM, beginning after .bss, and growing towards
* the stack.
*
* I'm shoving these here naively; there's probably a cleaner way
* to go about this. [mbolivar]
*/
_lm_heap_start = DEFINED(_lm_heap_start) ? _lm_heap_start : _end;
_lm_heap_end = DEFINED(_lm_heap_end) ? _lm_heap_end : __cs3_stack;
. = ALIGN (8);
_edata = .;
} > REGION_DATA AT> REGION_TEXT
/*
* .bss
*/
.bss :
{
*(.bss .bss.* .gnu.linkonce.b.*)
*(COMMON)
. = ALIGN (8);
_end = .;
} > REGION_BSS AT> REGION_TEXT
/*
* Constants needed for the pieces of CS3 we use during
* board startup; see libcs3_stm32_src/.
*/
__cs3_region_init_ram = (DEFINED(_FLASH_BUILD) ?
LOADADDR(.data) :
LOADADDR(.text));
__cs3_region_init_size_ram = (DEFINED(_FLASH_BUILD) ?
_edata - ADDR(.data) :
_edata - ADDR(.text));
__cs3_region_zero_size_ram = _end - _edata;
__cs3_region_num = 1;
/*
* Debugging sections
*/
.stab 0 (NOLOAD) : { *(.stab) }
.stabstr 0 (NOLOAD) : { *(.stabstr) }
/* DWARF debug sections.
* Symbols in the DWARF debugging sections are relative to the beginning
* of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) }
/DISCARD/ : { *(.note.GNU-stack) }
}
|
