diff options
Diffstat (limited to 'libgloss/sparc/elfsim.ld')
| -rw-r--r-- | libgloss/sparc/elfsim.ld | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/libgloss/sparc/elfsim.ld b/libgloss/sparc/elfsim.ld new file mode 100644 index 000000000..d1831be29 --- /dev/null +++ b/libgloss/sparc/elfsim.ld @@ -0,0 +1,202 @@ +/* Linker script for running ELF programs in the Sparc simulator */ + +/* OUTPUT_FORMAT("elf32-sparc", "elf32-sparc", "elf32-sparcle") */ +/* OUTPUT_FORMAT("elf32-sparc") */ +OUTPUT_ARCH(sparc) +STARTUP(traps.o) +INPUT(erc32-crt0.o) +ENTRY(_trap_table) +GROUP(-lc -lerc32 -lgcc) /* -lerc32 used to be -lsim */ + +SEARCH_DIR(.) +/* Do we need any of these for elf? + __DYNAMIC = 0; */ + +/* + * The memory map looks like this: + * +--------------------+ <- low memory + * | .text | + * | _stext | + * | _etext | + * | ctor list | the ctor and dtor lists are for + * | dtor list | C++ support + * | _end_text | + * +--------------------+ + * | .data | initialized data goes here + * | _sdata | + * | _edata | + * +--------------------+ + * | .bss | + * | __bss_start | start of bss, cleared by crt0 + * | _end | start of heap, used by sbrk() + * +--------------------+ + * | heap space | + * | _ENDHEAP | + * | stack space | + * | __stack | top of stack + * +--------------------+ <- high memory + */ + +/* + * User modifiable values: + * + * _CLOCK_SPEED in Mhz (used to program the counter/timers) + * + * _PROM_SIZE size of PROM (permissible values are 4K, 8K, 16K + * 32K, 64K, 128K, 256K, and 512K) + * _RAM_SIZE size of RAM (permissible values are 256K, 512K, + * 1MB, 2Mb, 4Mb, 8Mb, 16Mb, and 32Mb) + * + * These symbols are only used in assembler code, so they only need to + * be listed once. They should always be refered to without SYM(). + */ + +_CLOCK_SPEED = 10; + +_PROM_SIZE = 4M; +_RAM_SIZE = 256K; + +_RAM_START = 0x02000000; +_RAM_END = _RAM_START + _RAM_SIZE; +_STACK_SIZE = (16 * 1024); +_PROM_START = 0x00000000; +_PROM_END = _PROM_START + _PROM_SIZE; + + +/* + * Base address of the on-CPU peripherals + */ + +_ERC32_MEC = 0x01f80000; + +/* + * Setup the memory map for the SIS simulator. + * stack grows up towards low memory. + */ + +MEMORY +{ + rom : ORIGIN = 0x00000000, LENGTH = 4M + ram (rwx) : ORIGIN = 0x02000000, LENGTH = 2M +} + +__stack = _RAM_START + _RAM_SIZE - 4 * 16; +__trap_stack = (_RAM_START + _RAM_SIZE - 4 * 16) - _STACK_SIZE; + +/* + * All the symbols that might be accessed from C code need to be + * listed twice, once with an additional underscore. aout format needs + * and extra underscore, whereas coff & elf doesn't. This is to work + * with both. + */ +SECTIONS +{ + .text : + { + _stext = .; + PROVIDE (stext = .); + __EH_FRAME_BEGIN__ = .; + *(.text) + _etext = .; + PROVIDE (etext = .); + + /* For a.out. */ + CONSTRUCTORS + + /* For ELF. */ + __CTOR_LIST__ = .; + LONG(-1) + KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*crtend.o(.ctors)) + LONG(0) + __CTOR_END__ = .; + __DTOR_LIST__ = .; + LONG(-1) + KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*crtend.o(.dtors)) + LONG(0) + __DTOR_END__ = .; + + *(.init) + *(.lit) + *(.rodata) + *(.shdata) + *(.eh_frame) + *(.gnu.linkonce.t*) + *(.gnu.linkonce.r*) + *(.gcc_except_table) + *(.fini) + + _endtext = .; + PROVIDE(endtext = .); + } > ram + + .shbss SIZEOF(.text) + ADDR(.text) : + { + *(.shbss) + } + + .talias : { } > ram + + .data : + { + _sdata = .; + PROVIDE (sdata = .); + *(.data) + *(.data.*) + *(.gnu.linkonce.d*) + _edata = .; + PROVIDE (edata = .); + } > ram + + .bss SIZEOF(.data) + ADDR(.data) : + { + _sbss = . ; + PROVIDE (sbss = . ); + __bss_start = ALIGN(0x8); + *(.bss) + *(COMMON) + _ebss = .; + PROVIDE (ebss = .); + _end = ALIGN(0x8); + __end = ALIGN(0x8); + PROVIDE (end = ALIGN(0x8)); + } + + /* Stabs debugging sections. */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + /* DWARF debug sections. + Symbols in the DWARF debugging sections are relative to the beginning + of the section so we begin them at 0. */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } + /* SGI/MIPS DWARF 2 extensions */ + .debug_weaknames 0 : { *(.debug_weaknames) } + .debug_funcnames 0 : { *(.debug_funcnames) } + .debug_typenames 0 : { *(.debug_typenames) } + .debug_varnames 0 : { *(.debug_varnames) } + /* These must appear regardless of . */ +} |