ldscript.mips.cfe revision 217652 
1/*-
2 * Copyright (c) 2001, 2004, 2008, Juniper Networks, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the Juniper Networks, Inc. nor the names of its
14 *    contributors may be used to endorse or promote products derived from
15 *    this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY JUNIPER NETWORKS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL JUNIPER NETWORKS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	JNPR: ldscript.mips,v 1.3 2006/10/11 06:12:04
30 * $FreeBSD: head/sys/conf/ldscript.mips.cfe 217652 2011-01-20 19:16:29Z imp $
31 */
32
33/*
34 * This linker script is needed to build a kernel for use by Broadcom CFE
35 * when loaded over TFTP; its ELF loader does not support backwards seek
36 * on network I/O streams.
37 * Furthermore, CFE will only load PT_LOAD segments, therefore the dynamic
38 * sections must be placed in their own segment.
39 */
40
41ENTRY(_start)
42SEARCH_DIR(/usr/lib);
43/* Do we need any of these for elf?
44   __DYNAMIC = 0;
45PROVIDE (_DYNAMIC = 0);
46*/
47
48PHDRS
49{
50 headers PT_PHDR FILEHDR PHDRS ;
51 interp PT_INTERP ;
52 text PT_LOAD ;
53 dynamic PT_LOAD ;
54 data PT_LOAD ;
55}
56
57SECTIONS
58{
59  /* Read-only sections, merged into text segment: */
60  . = KERNLOADADDR ;
61  .interp     : { *(.interp) 	} :interp
62  .hash          : { *(.hash)		} :text
63  .dynsym        : { *(.dynsym)		}
64  .dynstr        : { *(.dynstr)		}
65  .gnu.version   : { *(.gnu.version)	}
66  .gnu.version_d   : { *(.gnu.version_d)	}
67  .gnu.version_r   : { *(.gnu.version_r)	}
68  .rel.init      : { *(.rel.init)	}
69  .rela.init     : { *(.rela.init)	}
70  .rel.text      :
71    {
72      *(.rel.text)
73      *(.rel.text.*)
74      *(.rel.gnu.linkonce.t.*)
75    }
76  .rela.text     :
77    {
78      *(.rela.text)
79      *(.rela.text.*)
80      *(.rela.gnu.linkonce.t.*)
81    }
82  .rel.fini      : { *(.rel.fini)	}
83  .rela.fini     : { *(.rela.fini)	}
84  .rel.rodata    :
85    {
86      *(.rel.rodata)
87      *(.rel.rodata.*)
88      *(.rel.gnu.linkonce.r.*)
89    }
90  .rela.rodata   :
91    {
92      *(.rela.rodata)
93      *(.rela.rodata.*)
94      *(.rela.gnu.linkonce.r.*)
95    }
96  .rel.data      :
97    {
98      *(.rel.data)
99      *(.rel.data.*)
100      *(.rel.gnu.linkonce.d.*)
101    }
102  .rela.data     :
103    {
104      *(.rela.data)
105      *(.rela.data.*)
106      *(.rela.gnu.linkonce.d.*)
107    }
108  .rel.ctors     : { *(.rel.ctors)	}
109  .rela.ctors    : { *(.rela.ctors)	}
110  .rel.dtors     : { *(.rel.dtors)	}
111  .rela.dtors    : { *(.rela.dtors)	}
112  .rel.got       : { *(.rel.got)		}
113  .rela.got      : { *(.rela.got)		}
114  .rel.sdata     :
115    {
116      *(.rel.sdata)
117      *(.rel.sdata.*)
118      *(.rel.gnu.linkonce.s.*)
119    }
120  .rela.sdata     :
121    {
122      *(.rela.sdata)
123      *(.rela.sdata.*)
124      *(.rela.gnu.linkonce.s.*)
125    }
126  .rel.sbss      :
127    { 
128      *(.rel.sbss)
129      *(.rel.sbss.*)
130      *(.rel.gnu.linkonce.sb.*)
131    }
132  .rela.sbss     :
133    {
134      *(.rela.sbss)
135      *(.rela.sbss.*)
136      *(.rel.gnu.linkonce.sb.*)
137    }
138  .rel.sdata2    : 
139    { 
140      *(.rel.sdata2)
141      *(.rel.sdata2.*)
142      *(.rel.gnu.linkonce.s2.*)
143    }
144  .rela.sdata2   : 
145    {
146      *(.rela.sdata2)
147      *(.rela.sdata2.*)
148      *(.rela.gnu.linkonce.s2.*)
149    }
150  .rel.sbss2     : 
151    { 
152      *(.rel.sbss2)	
153      *(.rel.sbss2.*)
154      *(.rel.gnu.linkonce.sb2.*)
155    }
156  .rela.sbss2    : 
157    { 
158      *(.rela.sbss2)	
159      *(.rela.sbss2.*)
160      *(.rela.gnu.linkonce.sb2.*)
161    }
162  .rel.bss       : 
163    { 
164      *(.rel.bss)
165      *(.rel.bss.*)
166      *(.rel.gnu.linkonce.b.*)
167    }
168  .rela.bss      : 
169    { 
170      *(.rela.bss)
171      *(.rela.bss.*)
172      *(.rela.gnu.linkonce.b.*)
173    }
174  .rel.plt       : { *(.rel.plt)		}
175  .rela.plt      : { *(.rela.plt)		}
176  .init          : 
177  { 
178    KEEP (*(.init))
179  } :text =0x1000000
180  .text      :
181  {
182    *(.trap)
183    *(.text)
184    *(.text.*)
185    *(.stub)
186    /* .gnu.warning sections are handled specially by elf32.em.  */
187    *(.gnu.warning)
188    *(.gnu.linkonce.t.*)
189  } =0x1000000
190  .fini      :
191  {
192    KEEP (*(.fini))
193  } =0x1000000
194  PROVIDE (__etext = .);
195  PROVIDE (_etext = .);
196  PROVIDE (etext = .);
197  .rodata   : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r.*) }
198  .rodata1   : { *(.rodata1) }
199  .reginfo : { *(.reginfo) }
200  .sdata2   : { *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*) }
201  .sbss2   : { *(.sbss2) *(.sbss2.*) *(.gnu.linkonce.sb2.*) }
202  . = ALIGN(0x2000) + (. & (0x2000 - 1));
203  .data    :
204  {
205    *(.data)
206    *(.data.*)
207    *(.gnu.linkonce.d.*)
208    SORT(CONSTRUCTORS)
209  } :data
210  .data1   : { *(.data1) }
211  .eh_frame : { KEEP (*(.eh_frame)) }
212  .gcc_except_table : { *(.gcc_except_table) }
213  .ctors   : 
214  {
215    /* gcc uses crtbegin.o to find the start of
216       the constructors, so we make sure it is
217       first.  Because this is a wildcard, it
218       doesn't matter if the user does not
219       actually link against crtbegin.o; the
220       linker won't look for a file to match a
221       wildcard.  The wildcard also means that it
222       doesn't matter which directory crtbegin.o
223       is in.  */
224    KEEP (*crtbegin.o(.ctors))
225    /* We don't want to include the .ctor section from
226       from the crtend.o file until after the sorted ctors.
227       The .ctor section from the crtend file contains the
228       end of ctors marker and it must be last */
229    KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))
230    KEEP (*(SORT(.ctors.*)))
231    KEEP (*(.ctors))
232  }
233   .dtors         :
234  {
235    KEEP (*crtbegin.o(.dtors))
236    KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
237    KEEP (*(SORT(.dtors.*)))
238    KEEP (*(.dtors))
239  }
240  .plt      : { *(.plt)	}
241  _gp = ALIGN(16) + 0x7ff0;
242  .got		  : { *(.got.plt) *(.got) }
243  .dynamic       : { *(.dynamic) } :dynamic
244  /* We want the small data sections together, so single-instruction offsets
245     can access them all, and initialized data all before uninitialized, so
246     we can shorten the on-disk segment size.  */
247  .sdata     : 
248  {
249    *(.sdata) 
250    *(.sdata.*)
251    *(.gnu.linkonce.s.*)
252  }
253  _edata = .;
254  PROVIDE (edata = .);
255  __bss_start = .;
256  .sbss      :
257  {
258    PROVIDE (__sbss_start = .);
259    PROVIDE (___sbss_start = .);
260    *(.dynsbss)
261    *(.sbss)
262    *(.sbss.*)
263    *(.gnu.linkonce.sb.*)
264    *(.scommon)
265    PROVIDE (__sbss_end = .);
266    PROVIDE (___sbss_end = .);
267  }
268  .bss       :
269  {
270   *(.dynbss)
271   *(.bss)
272   *(.bss.*)
273   *(.gnu.linkonce.b.*)
274   *(COMMON)
275   /* Align here to ensure that the .bss section occupies space up to
276      _end.  Align after .bss to ensure correct alignment even if the
277      .bss section disappears because there are no input sections.  */
278   . = ALIGN(64 / 8);
279  }
280  . = ALIGN(64 / 8);
281  _end = .;
282  PROVIDE (end = .);
283  /* Stabs debugging sections.  */
284  .stab 0 : { *(.stab) }
285  .stabstr 0 : { *(.stabstr) }
286  .stab.excl 0 : { *(.stab.excl) }
287  .stab.exclstr 0 : { *(.stab.exclstr) }
288  .stab.index 0 : { *(.stab.index) }
289  .stab.indexstr 0 : { *(.stab.indexstr) }
290  .comment 0 : { *(.comment) }
291  /* DWARF debug sections.
292     Symbols in the DWARF debugging sections are relative to the beginning
293     of the section so we begin them at 0.  */
294  /* DWARF 1 */
295  .debug          0 : { *(.debug) }
296  .line           0 : { *(.line) }
297  /* GNU DWARF 1 extensions */
298  .debug_srcinfo  0 : { *(.debug_srcinfo) }
299  .debug_sfnames  0 : { *(.debug_sfnames) }
300  /* DWARF 1.1 and DWARF 2 */
301  .debug_aranges  0 : { *(.debug_aranges) }
302  .debug_pubnames 0 : { *(.debug_pubnames) }
303  /* DWARF 2 */
304  .debug_info     0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
305  .debug_abbrev   0 : { *(.debug_abbrev) }
306  .debug_line     0 : { *(.debug_line) }
307  .debug_frame    0 : { *(.debug_frame) }
308  .debug_str      0 : { *(.debug_str) }
309  .debug_loc      0 : { *(.debug_loc) }
310  .debug_macinfo  0 : { *(.debug_macinfo) }
311  /* SGI/MIPS DWARF 2 extensions */
312  .debug_weaknames 0 : { *(.debug_weaknames) }
313  .debug_funcnames 0 : { *(.debug_funcnames) }
314  .debug_typenames 0 : { *(.debug_typenames) }
315  .debug_varnames  0 : { *(.debug_varnames) }
316  /* These must appear regardless of  .  */
317}
318