2 * arch/xtensa/kernel/vmlinux.lds.S
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
10 * Copyright (C) 2001 - 2005 Tensilica Inc.
12 * Chris Zankel <chris@zankel.net>
13 * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
14 * Joe Taylor <joe@tensilica.com, joetylr@yahoo.com>
17 #include <asm-generic/vmlinux.lds.h>
19 #include <asm/variant/core.h>
24 jiffies = jiffies_64 + 4;
29 #define KERNELOFFSET 0xd0001000
31 /* Note: In the following macros, it would be nice to specify only the
32 vector name and section kind and construct "sym" and "section" using
33 CPP concatenation, but that does not work reliably. Concatenating a
34 string with "." produces an invalid token. CPP will not print a
35 warning because it thinks this is an assembly file, but it leaves
36 them as multiple tokens and there may or may not be whitespace
39 /* Macro for a relocation entry */
41 #define RELOCATE_ENTRY(sym, section) \
42 LONG(sym ## _start); \
44 LONG(LOADADDR(section))
46 /* Macro to define a section for a vector.
48 * Use of the MIN function catches the types of errors illustrated in
49 * the following example:
51 * Assume the section .DoubleExceptionVector.literal is completely
52 * full. Then a programmer adds code to .DoubleExceptionVector.text
53 * that produces another literal. The final literal position will
54 * overlay onto the first word of the adjacent code section
55 * .DoubleExceptionVector.text. (In practice, the literals will
56 * overwrite the code, and the first few instructions will be
60 #define SECTION_VECTOR(sym, section, addr, max_prevsec_size, prevsec) \
61 section addr : AT((MIN(LOADADDR(prevsec) + max_prevsec_size, \
62 LOADADDR(prevsec) + SIZEOF(prevsec)) + 3) & ~ 3) \
65 sym ## _start = ABSOLUTE(.); \
67 sym ## _end = ABSOLUTE(.); \
71 * Mapping of input sections to output sections when linking.
85 /* The .head.text section must be the first section! */
89 VMLINUX_SYMBOL(__sched_text_start) = .;
90 *(.sched.literal .sched.text)
91 VMLINUX_SYMBOL(__sched_text_end) = .;
92 VMLINUX_SYMBOL(__lock_text_start) = .;
93 *(.spinlock.literal .spinlock.text)
94 VMLINUX_SYMBOL(__lock_text_end) = .;
103 /* Relocation table */
106 __boot_reloc_table_start = ABSOLUTE(.);
110 RELOCATE_ENTRY(_WindowVectors_text,
111 .WindowVectors.text);
113 RELOCATE_ENTRY(_KernelExceptionVector_literal,
114 .KernelExceptionVector.literal);
116 RELOCATE_ENTRY(_KernelExceptionVector_text,
117 .KernelExceptionVector.text);
119 RELOCATE_ENTRY(_UserExceptionVector_literal,
120 .UserExceptionVector.literal);
122 RELOCATE_ENTRY(_UserExceptionVector_text,
123 .UserExceptionVector.text);
124 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
125 .DoubleExceptionVector.literal);
126 RELOCATE_ENTRY(_DoubleExceptionVector_text,
127 .DoubleExceptionVector.text);
129 __boot_reloc_table_end = ABSOLUTE(.) ;
131 .fixup : { *(.fixup) }
136 __start___ex_table = .;
138 __stop___ex_table = .;
143 . = ALIGN(XCHAL_ICACHE_LINESIZE);
147 *(.data) CONSTRUCTORS
148 . = ALIGN(XCHAL_ICACHE_LINESIZE);
149 *(.data.cacheline_aligned)
154 /* The initial task */
156 .data.init_task : { *(.data.init_task) }
158 /* Initialization code and data: */
164 *(.init.literal) *(.init.text)
172 __tagtable_begin = .;
177 . = ALIGN(XCHAL_ICACHE_LINESIZE);
180 .init.setup : { *(.init.setup) }
183 __initcall_start = .;
189 __con_initcall_start = .;
190 .con_initcall.init : { *(.con_initcall.init) }
191 __con_initcall_end = .;
197 __start___ftr_fixup = .;
198 __ftr_fixup : { *(__ftr_fixup) }
199 __stop___ftr_fixup = .;
203 .data.percpu : { *(.data.percpu) }
206 #ifdef CONFIG_BLK_DEV_INITRD
208 __initramfs_start =.;
209 .init.ramfs : { *(.init.ramfs) }
213 /* We need this dummy segment here */
218 /* The vectors are relocated to the real position at startup time */
220 SECTION_VECTOR (_WindowVectors_text,
222 XCHAL_WINDOW_VECTORS_VADDR, 4,
224 SECTION_VECTOR (_DebugInterruptVector_literal,
225 .DebugInterruptVector.literal,
226 XCHAL_DEBUG_VECTOR_VADDR - 4,
227 SIZEOF(.WindowVectors.text),
229 SECTION_VECTOR (_DebugInterruptVector_text,
230 .DebugInterruptVector.text,
231 XCHAL_DEBUG_VECTOR_VADDR,
233 .DebugInterruptVector.literal)
234 SECTION_VECTOR (_KernelExceptionVector_literal,
235 .KernelExceptionVector.literal,
236 XCHAL_KERNEL_VECTOR_VADDR - 4,
237 SIZEOF(.DebugInterruptVector.text),
238 .DebugInterruptVector.text)
239 SECTION_VECTOR (_KernelExceptionVector_text,
240 .KernelExceptionVector.text,
241 XCHAL_KERNEL_VECTOR_VADDR,
243 .KernelExceptionVector.literal)
244 SECTION_VECTOR (_UserExceptionVector_literal,
245 .UserExceptionVector.literal,
246 XCHAL_USER_VECTOR_VADDR - 4,
247 SIZEOF(.KernelExceptionVector.text),
248 .KernelExceptionVector.text)
249 SECTION_VECTOR (_UserExceptionVector_text,
250 .UserExceptionVector.text,
251 XCHAL_USER_VECTOR_VADDR,
253 .UserExceptionVector.literal)
254 SECTION_VECTOR (_DoubleExceptionVector_literal,
255 .DoubleExceptionVector.literal,
256 XCHAL_DOUBLEEXC_VECTOR_VADDR - 16,
257 SIZEOF(.UserExceptionVector.text),
258 .UserExceptionVector.text)
259 SECTION_VECTOR (_DoubleExceptionVector_text,
260 .DoubleExceptionVector.text,
261 XCHAL_DOUBLEEXC_VECTOR_VADDR,
263 .DoubleExceptionVector.literal)
265 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
274 .sbss : { *(.sbss) *(.scommon) }
275 .bss : { *(COMMON) *(.bss) }
279 /* only used by the boot loader */
282 .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
286 .initrd : { *(.initrd) }
289 .ResetVector.text XCHAL_RESET_VECTOR_VADDR :
295 /* Sections to be discarded */
299 *(.text.exit.literal)
305 .debug 0 : { *(.debug) }
306 .line 0 : { *(.line) }
307 .debug_srcinfo 0 : { *(.debug_srcinfo) }
308 .debug_sfnames 0 : { *(.debug_sfnames) }
309 .debug_aranges 0 : { *(.debug_aranges) }
310 .debug_pubnames 0 : { *(.debug_pubnames) }
311 .debug_info 0 : { *(.debug_info) }
312 .debug_abbrev 0 : { *(.debug_abbrev) }
313 .debug_line 0 : { *(.debug_line) }
314 .debug_frame 0 : { *(.debug_frame) }
315 .debug_str 0 : { *(.debug_str) }
316 .debug_loc 0 : { *(.debug_loc) }
317 .debug_macinfo 0 : { *(.debug_macinfo) }
318 .debug_weaknames 0 : { *(.debug_weaknames) }
319 .debug_funcnames 0 : { *(.debug_funcnames) }
320 .debug_typenames 0 : { *(.debug_typenames) }
321 .debug_varnames 0 : { *(.debug_varnames) }