ARM Compiler toolchain Using the Linker - ARM Information Center

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.init_array : { PROVIDE_HIDDEN (__init_array_start = .); KEEP (*(.init_array*)) PROVIDE_HIDDEN (__init_array_end = .); } .fini_array : { PROVIDE_HIDDEN (__fini_array_start = .); KEEP (*(.fini_array*)) PROVIDE_HIDDEN (__fini_array_end = .); } .dynamic : { *(.dynamic) } .got : { *(.got.plt) *(.got) } .data : { __data_start = .; *(.data .data.*) } _edata = .; PROVIDE(edata = .); __bss_start = .; __bss_start__ = .; .bss : { *(.bss .bss.*) . = ALIGN(. != 0 ? 32 / 8 : 1); } __bss_end__ = .; _bss_end__ = .; . = ALIGN(4); __end = .; _end = .; PROVIDE(end = .); } 9.6.3 Default ld script for a --ldpartial partially linked object SECTIONS { .interp 0 : { *(.interp) } .note.ABI-tag 0 : { *(.note.ABI-tag) } .hash 0 : { *(.hash) } .dynsym 0 : { *(.dynsym) } .dynstr 0 : { *(.dynstr) } .version 0 : { *(.version) } .version_d 0 : { *(.version_d) } .version_r 0 : { *(.version_r) } .rel.dyn 0 : { *(.rel.dyn) } .rel.plt 0 : { *(.rel.plt) } .init 0 : { KEEP (*(.init)) } .plt 0 : { *(.plt) } .text 0 : { *(.text) } .fini 0 : { KEEP (*(.fini)) } .rodata 0 : { *(.rodata) } .ARM.exidx 0 : { *(.ARM.exidx*) } .tdata 0 : { *(.tdata) } .tbss 0 : { *(.tbss) } .preinit_array 0 : { KEEP (*(.preinit_array)) } .dynamic 0 : { *(.dynamic) } GNU ld script support in armlink ARM DUI 0474C Copyright © 2010-2011 ARM. All rights reserved. 9-10 ID080411 Non-Confidential
9.6.4 See also .got 0 : { *(.got.plt) *(.got) } .data 0 : { *(.data) } .bss 0 : { *(.bss) } } Concepts • About GNU ld script support and restrictions on page 9-2. Reference Linker Reference: • --ldpartial on page 2-94 • --linker_script=ld_script on page 2-100. GNU ld script support in armlink ARM DUI 0474C Copyright © 2010-2011 ARM. All rights reserved. 9-11 ID080411 Non-Confidential
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® ARM Copyright © 2010-2011 ARM.
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Contents ARM Compiler toolchain Usi
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Contents 7.15 Creating a symdefs fi
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Chapter 1 Conventions and feedback
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Chapter 2 Overview of the linker Th
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Concepts • Demand paging on page
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2.3 Linker command-line options lis
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• --keep_protected_symbols on pag
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• --eager_load_debug, --no_eager_
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2.5 What the linker outputs 2.5.1 S
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Chapter 3 Linking models supported
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3.2 Bare-metal linking model 3.2.1
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Linking models supported by armlink
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3.5.1 See also • There are restri
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3.7 Concepts common to both BPABI a
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Image structure and generation •
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4.1.1 See also Image structure and
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4.3 Load view and execution view of
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4.4 Methods of specifying an image
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4.5 Types of simple image 4.5.1 See
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4.10 About specifying an initial en
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4.11.2 Example 4.11.3 See also The
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4.13 Section alignment with the lin
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Reference Linker Reference: • --a
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4.16 Overview of veneers 4.16.1 See
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4.18 Veneer types 4.18.1 See also I
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4.20 Reuse of veneers when scatter-
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4.22 About weak references and defi
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BL init_foo ;Rest of code END 4.22.
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Image structure and generation 4.24
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4.25 Specifying user libraries when
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4.27 Use of the strict family of op
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5.1 Elimination of common debug sec
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5.3 Elimination of unused sections
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5.4 Elimination of unused virtual f
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• --scatter=file on page 2-142. C
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5.6.1 See also Using linker optimiz
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3. Creates the output image. 5.7.3
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5.9 How the linker chooses a compre
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5.11 How compression is applied 5.1
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5.13 Inlining functions with the li
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Reference Assembler Reference: •
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5.16 About reordering of tail calli
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5.18 About merging comment sections
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6.1 Linker options for getting info
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6.3 Example of using the --info lin
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6.4 How to find where a symbol is p
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• Load$$LR$$ load region symbols
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7.2 Accessing linker-defined symbol
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7.4 Image$$ execution region symbol
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7.5.1 See also Accessing and managi
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7.7 Region name values when not sca
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7.9 Importing linker-defined symbol
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7.11 Section-related symbols 7.11.1
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7.13 Input section symbols 7.13.1 S
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7.15 Creating a symdefs file 7.15.1
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7.17 Reading a symdefs file 7.17.1
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7.18.2 See also 0x0000814D T __argv
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7.20 Specifying steering files on t
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7.22 Steering file format 7.22.1 Se
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7.24 Using $Super$$ and $Sub$$ to p
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Using scatter files • Images with
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8.2 When to use scatter-loading 8.2
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• --startup=symbol, --no_startup
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8.4.1 See also Concepts • About s
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8.5.1 See also } SRAM 0x8000 0x8000
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8.7 Specifying stack and heap using
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8.9 Creating root execution regions
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8.9.2 See also Tasks • Using the
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8.11 Placing functions and data at
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Using scatter files RAM 0x200000 (0
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Using scatter files • Using __at
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Developing Software for ARM ® Proc
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} } .ANY1(+RO) ; evenly distributed
Page 155 and 156: 8.14 Examples of using placement al
Page 157 and 158: Using scatter files 8.15 Example of
Page 159 and 160: 8.16 Examples of using sorting algo
Page 161 and 162: 8.17 Selecting veneer input section
Page 163 and 164: Compiler Reference: • __attribute
Page 165 and 166: 8.20 Restrictions on placing __at s
Page 167 and 168: 8.21.1 See also Using scatter files
Page 169 and 170: 8.23 Placing a key in flash memory
Page 171 and 172: 8.25 Placement of sections with ove
Page 173 and 174: 8.25.1 See also Using scatter files
Page 175 and 176: 8.27 Example of placing code in a r
Page 177 and 178: 8.29 Example of placing ARM C++ lib
Page 179 and 180: 8.31 Reserving an empty region Usin
Page 181 and 182: 8.32 About creating regions on page
Page 183 and 184: 8.33 Overalignment of execution reg
Page 185 and 186: 8.35 Expression evaluation in scatt
Page 187 and 188: 8.37 Equivalent scatter-loading des
Page 189 and 190: Using scatter files Example 8-23 Po
Page 191 and 192: Using scatter files Example 8-25 Po
Page 193 and 194: Using scatter files • The ER_ZI e
Page 195 and 196: Using scatter files Example 8-29 Sc
Page 197 and 198: Chapter 9 GNU ld script support in
Page 199 and 200: 9.2 Typical use cases for using ld
Page 201 and 202: Reference Linker Reference: • --l
Page 203 and 204: 9.5 Recommendations for using ld sc
Page 205: .data : { __data_start = .; *(.data
Page 209 and 210: 9.7.1 See also } .dynamic : { *(.dy
Page 211 and 212: 9.8.1 See also { *(.bss .bss.*) . =
Page 213 and 214: Chapter 10 BPABI and SysV shared li
Page 215 and 216: BPABI and SysV shared libraries and
Page 217 and 218: 10.3 Concepts common to all BPABI m
Page 219 and 220: 10.5 Symbol visibility for BPABI mo
Page 221 and 222: 10.6 Automatic import and export fo
Page 223 and 224: 10.8 Symbol versioning for BPABI mo
Page 225 and 226: 10.10 Linker options for SysV model
Page 229 and 230: 10.13 Addressing modes in the SysV
Page 233 and 234: 10.17 Linker options for bare metal
Page 237 and 238: 10.21 Addressing modes in the BPABI
Page 239 and 240: 10.23 About symbol versioning 10.23
Page 241 and 242: 10.25 Example of creating versioned
Page 243 and 244: 10.27 Linker options for enabling i
Page 245 and 246: Chapter 11 Features of the Base Pla
Page 247 and 248: Features of the Base Platform linki
Page 249 and 250: 11.2 Example scatter file for the B
Page 251 and 252: Features of the Base Platform linki
Page 253: Change Topics affected Revisions fo
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