1 /* Linker script for 68HC12 executable (PROM). */
3 OUTPUT_FORMAT("elf32-m68hc12", "elf32-m68hc12", "elf32-m68hc12")
8 /* Fixed definition of the available memory banks.
9 See generic emulation script for a user defined configuration. */
11 /* The memory layout below is suitable for gcc validation.
12 It takes care of big programs allowing up to 48128 bytes
13 of text while allowing some programs that consume some
14 memory (comp-goto-1 requires the RAM to be set to 0x4400
15 to avoid head<->stack collision in malloc/sbrk). */
18 page0 (rwx) : ORIGIN = 0x00, LENGTH = 256
19 text (rx) : ORIGIN = 0x04400, LENGTH = 0x10000 - 0x4400
20 data : ORIGIN = 0x01100, LENGTH = 0x2000 - 0x1100
22 /* Setup the stack on the top of the data memory bank. */
23 PROVIDE (_stack = 0x04400 - 1);
27 .dynsym : { *(.dynsym) }
28 .dynstr : { *(.dynstr) }
29 .gnu.version : { *(.gnu.version) }
30 .gnu.version_d : { *(.gnu.version_d) }
31 .gnu.version_r : { *(.gnu.version_r) }
36 *(.rel.gnu.linkonce.t.*)
42 *(.rela.gnu.linkonce.t.*)
48 *(.rel.gnu.linkonce.d.*)
54 *(.rela.gnu.linkonce.d.*)
60 *(.rel.gnu.linkonce.r.*)
66 *(.rela.gnu.linkonce.r.*)
72 *(.rel.gnu.linkonce.s.*)
78 *(.rela.gnu.linkonce.s.*)
84 *(.rel.gnu.linkonce.sb.*)
90 *(.rel.gnu.linkonce.sb.*)
96 *(.rel.gnu.linkonce.b.*)
102 *(.rela.gnu.linkonce.b.*)
104 .rela.stext : { *(.rela.stest) }
105 .rela.etext : { *(.rela.etest) }
106 .rela.sdata : { *(.rela.sdata) }
107 .rela.edata : { *(.rela.edata) }
108 .rela.eit_v : { *(.rela.eit_v) }
109 .rela.ebss : { *(.rela.ebss) }
110 .rela.srodata : { *(.rela.srodata) }
111 .rela.erodata : { *(.rela.erodata) }
112 .rela.got : { *(.rela.got) }
113 .rela.ctors : { *(.rela.ctors) }
114 .rela.dtors : { *(.rela.dtors) }
115 .rela.init : { *(.rela.init) }
116 .rela.fini : { *(.rela.fini) }
117 .rela.plt : { *(.rela.plt) }
118 .rel.stext : { *(.rel.stest) }
119 .rel.etext : { *(.rel.etest) }
120 .rel.sdata : { *(.rel.sdata) }
121 .rel.edata : { *(.rel.edata) }
122 .rel.ebss : { *(.rel.ebss) }
123 .rel.eit_v : { *(.rel.eit_v) }
124 .rel.srodata : { *(.rel.srodata) }
125 .rel.erodata : { *(.rel.erodata) }
126 .rel.got : { *(.rel.got) }
127 .rel.ctors : { *(.rel.ctors) }
128 .rel.dtors : { *(.rel.dtors) }
129 .rel.init : { *(.rel.init) }
130 .rel.fini : { *(.rel.fini) }
131 .rel.plt : { *(.rel.plt) }
132 /* Concatenate .page0 sections. Put them in the page0 memory bank
133 unless we are creating a relocatable file. */
139 /* Start of text section. */
148 /* Put trampolines at beginning of text at 0x4400 so that they
149 are not in memory bank window. */
156 /* Put startup code at beginning so that _start keeps same address. */
158 KEEP (*(.install0)) /* Section should setup the stack pointer. */
159 KEEP (*(.install1)) /* Place holder for applications. */
160 KEEP (*(.install2)) /* Optional installation of data sections in RAM. */
161 KEEP (*(.install3)) /* Place holder for applications. */
162 KEEP (*(.install4)) /* Section that calls the main. */
166 /* .gnu.warning sections are handled specially by elf32.em. */
170 KEEP (*(.fini0)) /* Beginning of finish code (_exit symbol). */
171 KEEP (*(.fini1)) /* Place holder for applications. */
172 KEEP (*(.fini2)) /* C++ destructors. */
173 KEEP (*(.fini3)) /* Place holder for applications. */
174 KEEP (*(.fini4)) /* Runtime exit. */
196 /* Constructor and destructor tables are in ROM. */
199 PROVIDE (__CTOR_LIST__ = .);
201 PROVIDE(__CTOR_END__ = .);
205 PROVIDE(__DTOR_LIST__ = .);
207 PROVIDE(__DTOR_END__ = .);
209 /* Start of the data section image in ROM. */
211 PROVIDE (__data_image = .);
212 /* All read-only sections that normally go in PROM must be above.
213 We construct the DATA image section in PROM at end of all these
214 read-only sections. The data image must be copied at init time.
215 Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */
216 .data : AT (__data_image)
218 __data_section_start = .;
219 PROVIDE (__data_section_start = .);
229 __data_section_size = SIZEOF(.data);
230 PROVIDE (__data_section_size = SIZEOF(.data));
231 __data_image_end = __data_image + __data_section_size;
232 /* SCz: this does not work yet... This is supposed to force the loading
233 of _map_data.o (from libgcc.a) when the .data section is not empty.
234 By doing so, this should bring the code that copies the .data section
235 from ROM to RAM at init time.
236 ___pre_comp_data_size = SIZEOF(.data);
237 __install_data_sections = ___pre_comp_data_size > 0 ?
238 __map_data_sections : 0;
244 /* Relocation for some bss and data sections. */
258 __bss_size = SIZEOF(.bss);
259 PROVIDE (__bss_size = SIZEOF(.bss));
260 /* If the 'vectors_addr' symbol is defined, it indicates the start address
261 of interrupt vectors. This depends on the 68HC11 operating mode:
267 In general, the vectors address is 0xffc0. This can be overriden
268 with the '-defsym vectors_addr=0xbfc0' ld option.
269 Note: for the bootstrap mode, the interrupt vectors are at 0xbfc0 but
270 they are redirected to 0x00c0 by the internal PROM. Application's vectors
271 must also consist of jump instructions (see Motorola's manual). */
272 PROVIDE (_vectors_addr = DEFINED (vectors_addr) ? vectors_addr : 0xffc0);
273 .vectors DEFINED (vectors_addr) ? vectors_addr : 0xffc0 :
277 /* Stabs debugging sections. */
278 .stab 0 : { *(.stab) }
279 .stabstr 0 : { *(.stabstr) }
280 .stab.excl 0 : { *(.stab.excl) }
281 .stab.exclstr 0 : { *(.stab.exclstr) }
282 .stab.index 0 : { *(.stab.index) }
283 .stab.indexstr 0 : { *(.stab.indexstr) }
284 .comment 0 : { *(.comment) }
285 /* DWARF debug sections.
286 Symbols in the DWARF debugging sections are relative to the beginning
287 of the section so we begin them at 0.
288 Treatment of DWARF debug section must be at end of the linker
289 script to avoid problems when there are undefined symbols. It's necessary
290 to avoid that the DWARF section is relocated before such undefined
291 symbols are found. */
293 .debug 0 : { *(.debug) }
294 .line 0 : { *(.line) }
295 /* GNU DWARF 1 extensions */
296 .debug_srcinfo 0 : { *(.debug_srcinfo) }
297 .debug_sfnames 0 : { *(.debug_sfnames) }
298 /* DWARF 1.1 and DWARF 2 */
299 .debug_aranges 0 : { *(.debug_aranges) }
300 .debug_pubnames 0 : { *(.debug_pubnames) }
302 .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
303 .debug_abbrev 0 : { *(.debug_abbrev) }
304 .debug_line 0 : { *(.debug_line) }
305 .debug_frame 0 : { *(.debug_frame) }
306 .debug_str 0 : { *(.debug_str) }
307 .debug_loc 0 : { *(.debug_loc) }
308 .debug_macinfo 0 : { *(.debug_macinfo) }
309 .debug_ranges 0 : { *(.debug_ranges) }