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! */
90 VMLINUX_SYMBOL(__sched_text_start) = .;
91 *(.sched.literal .sched.text)
92 VMLINUX_SYMBOL(__sched_text_end) = .;
93 VMLINUX_SYMBOL(__lock_text_start) = .;
94 *(.spinlock.literal .spinlock.text)
95 VMLINUX_SYMBOL(__lock_text_end) = .;
104 /* Relocation table */
107 __boot_reloc_table_start = ABSOLUTE(.);
111 RELOCATE_ENTRY(_WindowVectors_text,
112 .WindowVectors.text);
114 RELOCATE_ENTRY(_KernelExceptionVector_literal,
115 .KernelExceptionVector.literal);
117 RELOCATE_ENTRY(_KernelExceptionVector_text,
118 .KernelExceptionVector.text);
120 RELOCATE_ENTRY(_UserExceptionVector_literal,
121 .UserExceptionVector.literal);
123 RELOCATE_ENTRY(_UserExceptionVector_text,
124 .UserExceptionVector.text);
125 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
126 .DoubleExceptionVector.literal);
127 RELOCATE_ENTRY(_DoubleExceptionVector_text,
128 .DoubleExceptionVector.text);
130 __boot_reloc_table_end = ABSOLUTE(.) ;
132 .fixup : { *(.fixup) }
137 __start___ex_table = .;
139 __stop___ex_table = .;
144 . = ALIGN(XCHAL_ICACHE_LINESIZE);
150 . = ALIGN(XCHAL_ICACHE_LINESIZE);
151 *(.data.cacheline_aligned)
156 /* The initial task */
158 .data.init_task : { *(.data.init_task) }
160 /* Initialization code and data: */
166 *(.init.literal) *(.init.text)
174 __tagtable_begin = .;
179 . = ALIGN(XCHAL_ICACHE_LINESIZE);
182 .init.setup : { *(.init.setup) }
185 __initcall_start = .;
191 __con_initcall_start = .;
192 .con_initcall.init : { *(.con_initcall.init) }
193 __con_initcall_end = .;
199 __start___ftr_fixup = .;
200 __ftr_fixup : { *(__ftr_fixup) }
201 __stop___ftr_fixup = .;
205 .data.percpu : { *(.data.percpu) }
208 #ifdef CONFIG_BLK_DEV_INITRD
210 __initramfs_start =.;
211 .init.ramfs : { *(.init.ramfs) }
215 /* We need this dummy segment here */
220 /* The vectors are relocated to the real position at startup time */
222 SECTION_VECTOR (_WindowVectors_text,
224 XCHAL_WINDOW_VECTORS_VADDR, 4,
226 SECTION_VECTOR (_DebugInterruptVector_literal,
227 .DebugInterruptVector.literal,
228 XCHAL_DEBUG_VECTOR_VADDR - 4,
229 SIZEOF(.WindowVectors.text),
231 SECTION_VECTOR (_DebugInterruptVector_text,
232 .DebugInterruptVector.text,
233 XCHAL_DEBUG_VECTOR_VADDR,
235 .DebugInterruptVector.literal)
236 SECTION_VECTOR (_KernelExceptionVector_literal,
237 .KernelExceptionVector.literal,
238 XCHAL_KERNEL_VECTOR_VADDR - 4,
239 SIZEOF(.DebugInterruptVector.text),
240 .DebugInterruptVector.text)
241 SECTION_VECTOR (_KernelExceptionVector_text,
242 .KernelExceptionVector.text,
243 XCHAL_KERNEL_VECTOR_VADDR,
245 .KernelExceptionVector.literal)
246 SECTION_VECTOR (_UserExceptionVector_literal,
247 .UserExceptionVector.literal,
248 XCHAL_USER_VECTOR_VADDR - 4,
249 SIZEOF(.KernelExceptionVector.text),
250 .KernelExceptionVector.text)
251 SECTION_VECTOR (_UserExceptionVector_text,
252 .UserExceptionVector.text,
253 XCHAL_USER_VECTOR_VADDR,
255 .UserExceptionVector.literal)
256 SECTION_VECTOR (_DoubleExceptionVector_literal,
257 .DoubleExceptionVector.literal,
258 XCHAL_DOUBLEEXC_VECTOR_VADDR - 16,
259 SIZEOF(.UserExceptionVector.text),
260 .UserExceptionVector.text)
261 SECTION_VECTOR (_DoubleExceptionVector_text,
262 .DoubleExceptionVector.text,
263 XCHAL_DOUBLEEXC_VECTOR_VADDR,
265 .DoubleExceptionVector.literal)
267 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
276 .sbss : { *(.sbss) *(.scommon) }
277 .bss : { *(COMMON) *(.bss) }
281 /* only used by the boot loader */
284 .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
288 .initrd : { *(.initrd) }
291 .ResetVector.text XCHAL_RESET_VECTOR_VADDR :
297 /* Sections to be discarded */
301 *(.text.exit.literal)
307 .debug 0 : { *(.debug) }
308 .line 0 : { *(.line) }
309 .debug_srcinfo 0 : { *(.debug_srcinfo) }
310 .debug_sfnames 0 : { *(.debug_sfnames) }
311 .debug_aranges 0 : { *(.debug_aranges) }
312 .debug_pubnames 0 : { *(.debug_pubnames) }
313 .debug_info 0 : { *(.debug_info) }
314 .debug_abbrev 0 : { *(.debug_abbrev) }
315 .debug_line 0 : { *(.debug_line) }
316 .debug_frame 0 : { *(.debug_frame) }
317 .debug_str 0 : { *(.debug_str) }
318 .debug_loc 0 : { *(.debug_loc) }
319 .debug_macinfo 0 : { *(.debug_macinfo) }
320 .debug_weaknames 0 : { *(.debug_weaknames) }
321 .debug_funcnames 0 : { *(.debug_funcnames) }
322 .debug_typenames 0 : { *(.debug_typenames) }
323 .debug_varnames 0 : { *(.debug_varnames) }