183 lines
6.2 KiB
Plaintext
183 lines
6.2 KiB
Plaintext
/*
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* Linker script for PIC32 firmware.
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*/
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OUTPUT_FORMAT("elf32-littlemips", "elf32-bigmips",
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"elf32-littlemips")
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OUTPUT_ARCH(pic32mx)
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ENTRY(_reset_vector_)
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MEMORY
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{
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ram (rw!x): ORIGIN = 0x80000000, LENGTH = 26K
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u0area (rw!x): ORIGIN = 0x80006800, LENGTH = 3K
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uarea (rw!x): ORIGIN = 0x80007400, LENGTH = 3K
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devcfg (r) : ORIGIN = 0x9fc02ff0, LENGTH = 16
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/* Required by Microchip C32 linker */
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kseg0_program_mem (rx) : ORIGIN = 0x9D000000, LENGTH = 512K
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exception_mem (rx) : ORIGIN = 0x9D000000, LENGTH = 0x1000
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kseg0_boot_mem (rx) : ORIGIN = 0x9FC00000, LENGTH = 12K-16
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kseg1_boot_mem (rx) : ORIGIN = 0xBFC00000, LENGTH = 0x490
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kseg1_data_mem (w!x) : ORIGIN = 0xA0000000, LENGTH = 0x20000
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}
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/* higher address of the user mode stack */
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u0 = ORIGIN(u0area);
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u = ORIGIN(uarea);
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u_end = ORIGIN(uarea) + LENGTH(uarea);
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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. = 0x0000;
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.interp : { *(.interp) }
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.hash : { *(.hash) }
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.dynsym : { *(.dynsym) }
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.dynstr : { *(.dynstr) }
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.gnu.version : { *(.gnu.version) }
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.gnu.version_d : { *(.gnu.version_d) }
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.gnu.version_r : { *(.gnu.version_r) }
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.rel.init : { *(.rel.init) }
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.rela.init : { *(.rela.init) }
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.rel.text : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
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.rela.text : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
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.rel.fini : { *(.rel.fini) }
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.rela.fini : { *(.rela.fini) }
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.rel.rodata : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
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.rela.rodata : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
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.rel.data : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
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.rela.data : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
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.rel.ctors : { *(.rel.ctors) }
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.rela.ctors : { *(.rela.ctors) }
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.rel.dtors : { *(.rel.dtors) }
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.rela.dtors : { *(.rela.dtors) }
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.rel.got : { *(.rel.got) }
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.rela.got : { *(.rela.got) }
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.rel.sdata : { *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) }
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.rela.sdata : { *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) }
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.rel.sbss : { *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) }
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.rela.sbss : { *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) }
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.rel.sdata2 : { *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) }
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.rela.sdata2 : { *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) }
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.rel.sbss2 : { *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) }
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.rela.sbss2 : { *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) }
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.rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
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.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
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.rel.plt : { *(.rel.plt) }
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.rela.plt : { *(.rela.plt) }
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.plt : { *(.plt) }
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.boot :
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{
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/* Execution starts here. */
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*(.startup)
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} > kseg0_boot_mem
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.text :
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{
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/* Exception handlers. */
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*(.exception)
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*(.text .stub .text.* .gnu.linkonce.t.*)
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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*(.glue_7t) *(.glue_7)
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__rodata_start = . ;
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*(.rodata .rodata.* .gnu.linkonce.r.* .rel.dyn)
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__abiflags = . ;
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*(.MIPS.abiflags)
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*(.dinit)
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/* Align here to ensure that the .text section ends on word boundary. */
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. = ALIGN (32 / 8);
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_etext = .;
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} > kseg0_program_mem
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/* Start data (internal SRAM). */
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.data : AT (ADDR (.text) + SIZEOF (.text))
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{
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__data_start = . ;
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_gp = .; /* We have only 32k RAM on MC-24, so no need for 0x8000 offset. */
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*(.data .data.* .gnu.linkonce.d.*)
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/* We want the small data sections together, so single-instruction offsets
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can access them all, and initialized data all before uninitialized, so
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we can shorten the on-disk segment size. */
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*(.sdata .sdata.* .gnu.linkonce.s.*)
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*(.eh_frame)
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_edata = .;
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} > ram
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/* Device configuration. */
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.config :
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{
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*(.config3)
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*(.config2)
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*(.config1)
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*(.config0)
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} > devcfg
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.bss ADDR (.data) + SIZEOF (.data) (NOLOAD) :
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{
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__bss_start = .;
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*(.dynbss)
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*(.sbss .sbss.*)
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*(.scommon)
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*(.bss .bss.* .gnu.linkonce.b.*)
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*(COMMON)
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/* Align here to ensure that the .bss section occupies space up to
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_end. Align after .bss to ensure correct alignment even if the
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.bss section disappears because there are no input sections. */
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. = ALIGN (32 / 8);
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} > ram
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__bss_end = . ;
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_end = .;
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/*
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* RAM functions go at the end of our stack and heap allocation.
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* Alignment of 2K required by the boundary register (BMXDKPBA).
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*/
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/*
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.ramfunc : AT (LOADADDR (.data) + SIZEOF (.data))
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{
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_ramfunc_begin = . ;
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*(.ramfunc .ramfunc.*)
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. = ALIGN(4) ;
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_ramfunc_end = . ;
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} >keram
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_ramfunc_image_begin = LOADADDR(.ramfunc) ;
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_ramfunc_length = SIZEOF(.ramfunc) ;
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*/
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/* Stabs debugging sections. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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.comment 0 : { *(.comment) }
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/* DWARF debug sections.
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Symbols in the DWARF debugging sections are relative to the beginning
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of the section so we begin them at 0. */
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/* DWARF 1 */
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.debug 0 : { *(.debug) }
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.line 0 : { *(.line) }
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/* GNU DWARF 1 extensions */
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.debug_srcinfo 0 : { *(.debug_srcinfo) }
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.debug_sfnames 0 : { *(.debug_sfnames) }
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/* DWARF 1.1 and DWARF 2 */
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.debug_aranges 0 : { *(.debug_aranges) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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/* DWARF 2 */
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.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_line 0 : { *(.debug_line) }
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.debug_frame 0 : { *(.debug_frame) }
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.debug_str 0 : { *(.debug_str) }
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.debug_loc 0 : { *(.debug_loc) }
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.debug_macinfo 0 : { *(.debug_macinfo) }
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/* SGI/MIPS DWARF 2 extensions */
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.debug_weaknames 0 : { *(.debug_weaknames) }
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.debug_funcnames 0 : { *(.debug_funcnames) }
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.debug_typenames 0 : { *(.debug_typenames) }
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.debug_varnames 0 : { *(.debug_varnames) }
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}
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