diff options
Diffstat (limited to 'libgloss/mips/array.ld')
| -rw-r--r-- | libgloss/mips/array.ld | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/libgloss/mips/array.ld b/libgloss/mips/array.ld new file mode 100644 index 0000000..4675105 --- /dev/null +++ b/libgloss/mips/array.ld @@ -0,0 +1,171 @@ +/* + * memory map assumed by prom and standalone system + * + * physical kseg1 use + * + * 0x1fc20000 0xbfc20000 + * to prom text and read-only data + * 0x1fc00000 0xbfc00000 (in cpu board "prom space") + * + * (Top of RAM - 8K) downward sash and standalone program stack + * | ( - 8K to preserve kernel message bufs) + * V (standalone programs grow their stack + * immediately below sash's stack) + * + * ^ + * | + * 0x00100000 0xa0100000 upward sash program text, data, and bss + * + * ^ + * | + * 0x00020000 0xa0020000 upward standalone program text, data, and bss + * (kernel is loaded here, also) + * + * 0x0001ffff 0xa001ffff downward dbgmon stack + * | + * V + * + * ^ + * | + * 0x00010000 0xa0010000 upward dbgmon text, data, and bss + * + * 0x0000ffff 0xa000ffff downward prom monitor stack + * | + * V + * + * ^ + * | + * 0x00000500 0xa0000500 upward prom monitor bss + * + * 0x000004ff 0xa00004ff + * to restart block + * 0x00000400 0xa0000400 + * + * 0x000003ff 0xa00003ff + * to general exception code + * 0x00000080 0xa0000080 (note cpu addresses as 0x80000080!) + * + * 0x0000007f 0xa000007f + * to utlbmiss exception code + * 0x00000000 0xa0000000 (note cpu addresses as 0x80000000!) + */ + +/* Uncomment this if you want srecords. +OUTPUT_FORMAT(srec) + */ +ENTRY(start) +STARTUP(crt0.o) +INPUT(array.o) +SEARCH_DIR(.) +__DYNAMIC = 0; + +/* + * Allocate the stack to be at the top of memory, since the stack + * grows down + * +PROVIDE (__stack = 1M - 8); + */ + +/* + * Initalize some symbols to be zero so we can reference them in the + * crt0 without core dumping. These functions are all optional, but + * we do this so we can have our crt0 always use them if they exist. + * This is so BSPs work better when using the crt0 installed with gcc. + * We have to initalize them twice, so we multiple object file + * formats, as some prepend an underscore. + */ +PROVIDE (hardware_init_hook = 0); +PROVIDE (software_init_hook = 0); + +SECTIONS +{ + . = 0x80020000; + .text : { + _ftext = . ; + *(.init) + eprol = .; + *(.text) + *(.text.*) + *(.gnu.linkonce.t*) + *(.mips16.fn.*) + *(.mips16.call.*) + PROVIDE (__runtime_reloc_start = .); + *(.rel.sdata) + PROVIDE (__runtime_reloc_stop = .); + *(.fini) + etext = .; + _etext = .; + } + + .ctors : + { + /* gcc uses crtbegin.o to find the start of + the constructors, so we make sure it is + first. Because this is a wildcard, it + doesn't matter if the user does not + actually link against crtbegin.o; the + linker won't look for a file to match a + wildcard. The wildcard also means that it + doesn't matter which directory crtbegin.o + is in. */ + + KEEP (*crtbegin.o(.ctors)) + + /* We don't want to include the .ctor section from + from the crtend.o file until after the sorted ctors. + The .ctor section from the crtend file contains the + end of ctors marker and it must be last */ + + KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*(.ctors)) + } + + .dtors : + { + KEEP (*crtbegin.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + } + + . = .; + .rdata : { + *(.rdata) + *(.rodata) + *(.rodata.*) + *(.gnu.linkonce.r*) + } + _fdata = ALIGN(16); + .data : { + *(.data) + *(.data.*) + *(.gnu.linkonce.d*) + } + _gp = ALIGN(16) + 0x8000; + .lit8 : { + *(.lit8) + } + .lit4 : { + *(.lit4) + } + .sdata : { + *(.sdata) + *(.sdata.*) + *(.gnu.linkonce.s*) + } + edata = .; + _edata = .; + _fbss = .; + .sbss : { + *(.sbss) + *(.scommon) + } + .bss : { + _bss_start = . ; + *(.bss) + *(COMMON) + } + end = .; + _end = .; +} |