/*
|
/*
|
*uncomment this if you want the linker to output srecords.
|
*uncomment this if you want the linker to output srecords.
|
OUTPUT_FORMAT(srec)
|
OUTPUT_FORMAT(srec)
|
*
|
*
|
*/
|
*/
|
ENTRY(_start)
|
ENTRY(_start)
|
STARTUP(crt0.o)
|
STARTUP(crt0.o)
|
OUTPUT_ARCH(sparc)
|
OUTPUT_ARCH(sparc)
|
SEARCH_DIR(.)
|
SEARCH_DIR(.)
|
__DYNAMIC = 0;
|
__DYNAMIC = 0;
|
GROUP (-lc -lslite86x -lgcc)
|
GROUP (-lc -lslite86x -lgcc)
|
|
|
/*
|
/*
|
* The memory map looks like this:
|
* The memory map looks like this:
|
* +--------------------+ <- low memory
|
* +--------------------+ <- low memory
|
* | .text |
|
* | .text |
|
* | _stext |
|
* | _stext |
|
* | _etext |
|
* | _etext |
|
* | ctor list | the ctor and dtor lists are for
|
* | ctor list | the ctor and dtor lists are for
|
* | dtor list | C++ support
|
* | dtor list | C++ support
|
* | _end_text |
|
* | _end_text |
|
* +--------------------+
|
* +--------------------+
|
* | .data | initialized data goes here
|
* | .data | initialized data goes here
|
* | _sdata |
|
* | _sdata |
|
* | _edata |
|
* | _edata |
|
* +--------------------+
|
* +--------------------+
|
* | .bss |
|
* | .bss |
|
* | __bss_start | start of bss, cleared by crt0
|
* | __bss_start | start of bss, cleared by crt0
|
* | _end | start of heap, used by sbrk()
|
* | _end | start of heap, used by sbrk()
|
* +--------------------+
|
* +--------------------+
|
* | heap space |
|
* | heap space |
|
* | _ENDHEAP |
|
* | _ENDHEAP |
|
* | stack space |
|
* | stack space |
|
* | __stack | top of stack
|
* | __stack | top of stack
|
* +--------------------+ <- high memory
|
* +--------------------+ <- high memory
|
*/
|
*/
|
|
|
_STACK_SIZE = (16 * 1024);
|
_STACK_SIZE = (16 * 1024);
|
_RAM_SIZE = 2M;
|
_RAM_SIZE = 2M;
|
_RAM_START = 0x40010000;
|
_RAM_START = 0x40010000;
|
_RAM_END = _RAM_START + _RAM_SIZE;
|
_RAM_END = _RAM_START + _RAM_SIZE;
|
|
|
/*
|
/*
|
* Base address of the on-CPU peripherals. This is for compatability
|
* Base address of the on-CPU peripherals. This is for compatability
|
* with the simulator.
|
* with the simulator.
|
*/
|
*/
|
|
|
_ERC32_MEC = 0x0;
|
_ERC32_MEC = 0x0;
|
|
|
/*
|
/*
|
* Setup the memory map of the MB86931-EB Board (ex931)
|
* Setup the memory map of the MB86931-EB Board (ex931)
|
* stack grows down towards low memory.
|
* stack grows down towards low memory.
|
*/
|
*/
|
MEMORY
|
MEMORY
|
{
|
{
|
ram (rwx) : ORIGIN = 0x40010000, LENGTH = 2M
|
ram (rwx) : ORIGIN = 0x40010000, LENGTH = 2M
|
}
|
}
|
|
|
__stack = _RAM_START + _RAM_SIZE - 4 * 16;
|
__stack = _RAM_START + _RAM_SIZE - 4 * 16;
|
__trap_stack = (_RAM_START + _RAM_SIZE - 4 * 16) - _STACK_SIZE;
|
__trap_stack = (_RAM_START + _RAM_SIZE - 4 * 16) - _STACK_SIZE;
|
|
|
/*
|
/*
|
* All the symbols that might be accessed from C code need to be
|
* All the symbols that might be accessed from C code need to be
|
* listed twice, once with an additional underscore. aout format needs
|
* listed twice, once with an additional underscore. aout format needs
|
* and extra underscore, whereas coff & elf doesn't. This is to work
|
* and extra underscore, whereas coff & elf doesn't. This is to work
|
* with both.
|
* with both.
|
*/
|
*/
|
/*
|
/*
|
* Initalize some symbols to be zero so we can reference them in the
|
* Initalize some symbols to be zero so we can reference them in the
|
* crt0 without core dumping. These functions are all optional, but
|
* 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.
|
* 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.
|
* This is so BSPs work better when using the crt0 installed with gcc.
|
* We have to initalize them twice, so we cover a.out (which prepends
|
* We have to initalize them twice, so we cover a.out (which prepends
|
* an underscore) and coff object file formats.
|
* an underscore) and coff object file formats.
|
*/
|
*/
|
PROVIDE (hardware_init_hook = 0);
|
PROVIDE (hardware_init_hook = 0);
|
PROVIDE (_hardware_init_hook = 0);
|
PROVIDE (_hardware_init_hook = 0);
|
PROVIDE (software_init_hook = 0);
|
PROVIDE (software_init_hook = 0);
|
PROVIDE (_software_init_hook = 0);
|
PROVIDE (_software_init_hook = 0);
|
SECTIONS
|
SECTIONS
|
{
|
{
|
.text : {
|
.text : {
|
stext = .;
|
stext = .;
|
_stext = .;
|
_stext = .;
|
__EH_FRAME_BEGIN__ = .;
|
__EH_FRAME_BEGIN__ = .;
|
|
|
CREATE_OBJECT_SYMBOLS
|
CREATE_OBJECT_SYMBOLS
|
*(.text)
|
*(.text)
|
|
|
__CTOR_LIST__ = .;
|
__CTOR_LIST__ = .;
|
LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
|
LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
|
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
|
KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
|
KEEP (*(SORT(.ctors.*)))
|
KEEP (*(SORT(.ctors.*)))
|
KEEP (*crtend.o(.ctors))
|
KEEP (*crtend.o(.ctors))
|
LONG(0)
|
LONG(0)
|
__CTOR_END__ = .;
|
__CTOR_END__ = .;
|
__DTOR_LIST__ = .;
|
__DTOR_LIST__ = .;
|
LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
|
LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
|
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
|
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
|
KEEP (*(SORT(.dtors.*)))
|
KEEP (*(SORT(.dtors.*)))
|
KEEP (*crtend.o(.dtors))
|
KEEP (*crtend.o(.dtors))
|
LONG(0)
|
LONG(0)
|
__DTOR_END__ = .;
|
__DTOR_END__ = .;
|
|
|
_etext = .;
|
_etext = .;
|
|
|
*(.init)
|
*(.init)
|
*(.lit)
|
*(.lit)
|
*(.rodata)
|
*(.rodata)
|
*(.shdata)
|
*(.shdata)
|
*(.eh_frame)
|
*(.eh_frame)
|
*(.gnu.linkonce.t*)
|
*(.gnu.linkonce.t*)
|
*(.gnu.linkonce.r*)
|
*(.gnu.linkonce.r*)
|
*(.gcc_except_table)
|
*(.gcc_except_table)
|
*(.fini)
|
*(.fini)
|
|
|
} > ram
|
} > ram
|
.shbss SIZEOF(.text) + ADDR(.text) : {
|
.shbss SIZEOF(.text) + ADDR(.text) : {
|
*(.shbss)
|
*(.shbss)
|
}
|
}
|
.talias : { } > ram
|
.talias : { } > ram
|
.data ALIGN(0x2000) : {
|
.data ALIGN(0x2000) : {
|
sdata = .;
|
sdata = .;
|
_sdata = .;
|
_sdata = .;
|
*(.data)
|
*(.data)
|
edata = .;
|
edata = .;
|
_edata = .;
|
_edata = .;
|
} > ram
|
} > ram
|
.bss SIZEOF(.data) + ADDR(.data) : {
|
.bss SIZEOF(.data) + ADDR(.data) : {
|
sbss = . ;
|
sbss = . ;
|
_sbss = . ;
|
_sbss = . ;
|
__bss_start = ALIGN(0x8);
|
__bss_start = ALIGN(0x8);
|
__bss_start = ALIGN(0x8);
|
__bss_start = ALIGN(0x8);
|
*(.bss)
|
*(.bss)
|
*(COMMON)
|
*(COMMON)
|
end = ALIGN(0x8);
|
end = ALIGN(0x8);
|
_end = ALIGN(0x8);
|
_end = ALIGN(0x8);
|
__end = ALIGN(0x8);
|
__end = ALIGN(0x8);
|
ebss = .;
|
ebss = .;
|
_ebss = .;
|
_ebss = .;
|
}
|
}
|
.mstack : { } > ram
|
.mstack : { } > ram
|
.rstack : { } > ram
|
.rstack : { } > ram
|
.stab 0 (NOLOAD) : {
|
.stab 0 (NOLOAD) : {
|
[ .stab ]
|
[ .stab ]
|
}
|
}
|
.stabstr 0 (NOLOAD) :
|
.stabstr 0 (NOLOAD) :
|
{
|
{
|
[ .stabstr ]
|
[ .stabstr ]
|
}
|
}
|
/* DWARF debug sections.
|
/* DWARF debug sections.
|
Symbols in the DWARF debugging sections are relative to the beginning
|
Symbols in the DWARF debugging sections are relative to the beginning
|
of the section so we begin them at 0. */
|
of the section so we begin them at 0. */
|
/* DWARF 1 */
|
/* DWARF 1 */
|
.debug 0 : { *(.debug) }
|
.debug 0 : { *(.debug) }
|
.line 0 : { *(.line) }
|
.line 0 : { *(.line) }
|
/* GNU DWARF 1 extensions */
|
/* GNU DWARF 1 extensions */
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
.debug_sfnames 0 : { *(.debug_sfnames) }
|
.debug_sfnames 0 : { *(.debug_sfnames) }
|
/* DWARF 1.1 and DWARF 2 */
|
/* DWARF 1.1 and DWARF 2 */
|
.debug_aranges 0 : { *(.debug_aranges) }
|
.debug_aranges 0 : { *(.debug_aranges) }
|
.debug_pubnames 0 : { *(.debug_pubnames) }
|
.debug_pubnames 0 : { *(.debug_pubnames) }
|
/* DWARF 2 */
|
/* DWARF 2 */
|
.debug_info 0 : { *(.debug_info) }
|
.debug_info 0 : { *(.debug_info) }
|
.debug_abbrev 0 : { *(.debug_abbrev) }
|
.debug_abbrev 0 : { *(.debug_abbrev) }
|
.debug_line 0 : { *(.debug_line) }
|
.debug_line 0 : { *(.debug_line) }
|
.debug_frame 0 : { *(.debug_frame) }
|
.debug_frame 0 : { *(.debug_frame) }
|
.debug_str 0 : { *(.debug_str) }
|
.debug_str 0 : { *(.debug_str) }
|
.debug_loc 0 : { *(.debug_loc) }
|
.debug_loc 0 : { *(.debug_loc) }
|
.debug_macinfo 0 : { *(.debug_macinfo) }
|
.debug_macinfo 0 : { *(.debug_macinfo) }
|
/* SGI/MIPS DWARF 2 extensions */
|
/* SGI/MIPS DWARF 2 extensions */
|
.debug_weaknames 0 : { *(.debug_weaknames) }
|
.debug_weaknames 0 : { *(.debug_weaknames) }
|
.debug_funcnames 0 : { *(.debug_funcnames) }
|
.debug_funcnames 0 : { *(.debug_funcnames) }
|
.debug_typenames 0 : { *(.debug_typenames) }
|
.debug_typenames 0 : { *(.debug_typenames) }
|
.debug_varnames 0 : { *(.debug_varnames) }
|
.debug_varnames 0 : { *(.debug_varnames) }
|
/* These must appear regardless of . */
|
/* These must appear regardless of . */
|
}
|
}
|
|
|
