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|
/*
* 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 = .;
}
|
