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* mep/Makefile.in (SCRIPTS): Update to new config.

Browse Source 
* mep/default.ld: New.
* mep/gmap_default.ld: Change default endian to little.
* mep/sim-crt0.S: Maintain 8-byte stack alignment.
* mep/sim-crtn.S: Likewise.
This commit is contained in:
DJ Delorie
2009-04-21 18:13:32 +00:00
parent 90791a1879
commit 6e9c1e8dd5
6 changed files with 358 additions and 15 deletions
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8
libgloss/ChangeLog
View File

@@ -1,3 +1,11 @@
2009-04-21 DJ Delorie <dj@redhat.com>
* mep/Makefile.in (SCRIPTS): Update to new config.
* mep/default.ld: New.
* mep/gmap_default.ld: Change default endian to little.
* mep/sim-crt0.S: Maintain 8-byte stack alignment.
* mep/sim-crtn.S: Likewise.
2009-04-03 Ken Werner <ken.werner@de.ibm.com>
* spu/Makefile.in: Add new files.

2
libgloss/mep/Makefile.in
View File

@@ -57,7 +57,7 @@ OBJCOPY = `if [ -f ${objroot}/../binutils/objcopy ] ; \
then echo ${objroot}/../binutils/objcopy ; \
else t='$(program_transform_name)'; echo objcopy | sed -e $$t ; fi`
SCRIPTS = min.ld simple.ld fmax.ld
SCRIPTS = min.ld default.ld
CRT = crt0.o sdram-crt0.o sim-crt0.o simnovec-crt0.o simsdram-crt0.o crtn.o sim-crtn.o
SIM_BSP = libsim.a
LIBNOSYS = ../libnosys/libnosys.a

332
libgloss/mep/default.ld Normal file
View File

@@ -0,0 +1,332 @@
/******************************************************************************
begin-header
DO NOT EDIT. THIS FILE IS MACHINE-GENERATED
FROM THE TEMPLATE FILE gmap_default.ld.
ALL EDITS WILL BE ERASED WITH NEXT MeP-Integrator RUN.
Custom linker script for the MeP Module default.
end-header
*******************************************************************************/
OUTPUT_FORMAT("elf32-mep-little", "elf32-mep",
"elf32-mep-little")
OUTPUT_ARCH(mep)
ENTRY(_reset)
MEMORY
{
/* begin-memory */
VEC (r) : ORIGIN = 0x00000000, LENGTH = 0x000000b8
VEC_WARM (w) : ORIGIN = 0x00200000, LENGTH = 0x000000b8
HWINIT (r) : ORIGIN = 0x000000b8, LENGTH = 0x00000148
RAM1 (r) : ORIGIN = 0x00000200, LENGTH = 0x001ffe00
RAM2 (w) : ORIGIN = 0x00800000, LENGTH = 0x00800000
/*RAM3 (w) : ORIGIN = 0x80000000, LENGTH = 0x00800000 */
IMEM0 (w) : ORIGIN = 0x002000b8, LENGTH = 0x00003f48
IMEM1 (w) : ORIGIN = 0x00204000, LENGTH = 0x00004000
DMEM0 (w) : ORIGIN = 0x00220000, LENGTH = 0x00008000
DMEM1 (w) : ORIGIN = 0x00228000, LENGTH = 0x00008000
DMEM2 (w) : ORIGIN = 0x00230000, LENGTH = 0x00008000
DMEM3 (w) : ORIGIN = 0x00238000, LENGTH = 0x00008000
/* end-memory */
}
SECTIONS
{
/* Sections to be placed in the vec area. */
.vec : { *(.vec) } >VEC /* VEC-section */
/* Sections to be placed in the HWINIT area. */
.hwinit : { *(.hwinit) } >HWINIT /* HWINIT-section */
/* Sections to be placed in the ROM area. */
.gnu.version : { *(.gnu.version) } >RAM1 /* ROM-section */
.gnu.version_d : { *(.gnu.version_d) } >RAM1 /* ROM-section */
.gnu.version_r : { *(.gnu.version_r) } >RAM1 /* ROM-section */
/* Sections to be placed in the romdata.s area. */
.srodata :
{
__sdabase = . + 0x8000;
*(.srodata) *(.srodata.*) *(.gnu.linkonce.srd.*)
} >RAM2 /* DATA-section */
/* Sections to be placed in the data.s area. */
.sdata :
{
*(.sdata)
*(.sdata.*)
*(.gnu.linkonce.s.*)
} >RAM2 /* DATA-section */
.sbss :
{
PROVIDE (__sbss_start = .);
PROVIDE (___sbss_start = .);
*(.dynsbss)
*(.sbss)
*(.sbss.*)
*(.gnu.linkonce.sb.*)
*(.scommon)
PROVIDE (__sbss_end = .);
PROVIDE (___sbss_end = .);
/* Assert maximum size */
__assert_tiny_size = ASSERT ((. < __sdabase) || ((. - __sdabase) <= 0x8000),
"tiny section overflow");
} >RAM2 /* DATA-section */
/* Sections to be placed in the data.m area. */
.data :
{
__data_start = . ;
*(.data)
*(.data.*)
*(.gnu.linkonce.d.*)
SORT(CONSTRUCTORS)
} >RAM2 /* DATA-section */
.data1 : { *(.data1) } >RAM2 /* DATA-section */
.eh_frame : { KEEP (*(.eh_frame))} >RAM2 /* DATA-section */
.gcc_except_table : { *(.gcc_except_table) *(.gcc_except_table.*) } >RAM2 /* DATA-section */
.dynamic : { *(.dynamic) } >RAM2 /* DATA-section */
.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))
} >RAM2 /* DATA-section */
.dtors :
{
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
} >RAM2 /* DATA-section */
.jcr :
{
. = ALIGN(4);
*(.jcr)
} >RAM2 /* DATA-section */
.got :
{
*(.got.plt) *(.got)
_edata = .;
PROVIDE (edata = .);
} >RAM2 /* DATA-section */
.based :
{
__tpbase = .;
*(.based) *(.based.*) *(.gnu.linkonce.based.*)
/* Assert maximum size */
__assert_based_size = ASSERT ((. - __tpbase) <= 0x80,
"based section overflow");
} >RAM2 /* DATA-section */
.bss :
{
__bss_start = .;
*(.dynbss)
*(.bss)
*(.bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
/* Align here to ensure that the .bss section occupies space up to
_end. Align after .bss to ensure correct alignment even if the
.bss section disappears because there are no input sections. */
. = ALIGN(32 / 8);
_end = .;
PROVIDE (end = .);
} >RAM2 /* DATA-section */
/* Sections to be placed in the code.m area. */
.init :
{
KEEP (*(.init))
} >RAM2 /* CODE-section */
.plt : { *(.plt) } >RAM2 /* DATA-section */
.text :
{
*(.text)
*(.text.*)
*(.stub)
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.gnu.linkonce.t.*)
} >RAM2 /* CODE-section */ =0
.vtext ALIGN(8) :
{
*(.vtext)
} >RAM2 /* CODE-section */
.fini :
{
KEEP (*(.fini))
PROVIDE (__etext = .);
PROVIDE (_etext = .);
PROVIDE (etext = .);
} >RAM2 /* CODE-section */ =0
/* Sections to be placed in the romdata.m area. */
.rodata : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r.*) } >RAM2 /* DATA-section */
.rodata1 : { *(.rodata1) } >RAM2 /* DATA-section */
/* Sections to be placed in the code.l area. */
.ftext : { *(.ftext) *(.ftext.*) *(.gnu.linkonce.ft.*) } >RAM2 /* CODE-section */
.vftext ALIGN(8) :
{
*(.vftext) *(.vftext.*) *(.gnu.linkonce.vf.*)
} >RAM2 /* CODE-section */
/* Sections to be placed in the romdata.l area. */
.frodata :
{
*(.frodata) *(.frodata.*) *(.gnu.linkonce.frd.*)
__assert_near_size = ASSERT (. <= 0x1000000, "near section overflow");
} >RAM2 /* DATA-section */
/* Sections to be placed in the data.l area. */
.far : { *(.far) *(.far.*) *(.gnu.linkonce.far.*) } >RAM2 /* DATA-section */
.farbss :
{ PROVIDE (__farbss_start = .);
*(.farbss) *(.farbss.*)
PROVIDE (__farbss_end = .);
} >RAM2 /* DATA-section */
/* END-mep-sections */
.vec_warm :
{
/* vec_warm is a place for the startup code to write the interrupt
vectors. Allow 0xb8 bytes of space aligned on a 4 byte boundary. */
. = ALIGN(4);
vec_warm = .;
. += 0xb8;
} >VEC_WARM
/* begin-stack-table */
__stack50 = (__stack - (0 * (__stack_size / 1)) + 15) / 16 * 16;
.rostacktab :
{
/* Emit a table describing the location of the different stacks. */
. = ALIGN(4);
__stack_table = .;
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
LONG (__stack50);
__stack_end = .;
} >RAM2
/* end-stack-table */
/* begin-heap */
/* End of DATA is 0x00800000 + 0x00800000. That's where the heap will end. */
__heap_end = 0x00800000 + 0x00800000 - 1;
/* end-heap */
/* Default stack size is 1M. That's where the heap will start if there's
room. If there's not enough room, allocate half of the remaining space
for stack and half for heap. Align the heap on a 16 byte boundary. */
__stack_size = (__stack_end + 0x100000 <= __heap_end + 1
? 0x100000
: ((__heap_end + 1 - __stack_end) / 2));
__heap = (__stack_end + __stack_size + 15) / 16 * 16;
/* Leave 16 bytes between the stack and the heap. */
__stack = __heap - 0x10;
/* 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) *(.gnu.linkonce.wi.*) }
.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) }
.debug_ranges 0 : { *(.debug_ranges) }
/* 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 . */
}

4
libgloss/mep/gmap_default.ld
View File

@@ -24,8 +24,8 @@ begin-header
end-header
*******************************************************************************/
OUTPUT_FORMAT("elf32-mep", "elf32-mep",
"elf32-mep")
OUTPUT_FORMAT("elf32-mep-little", "elf32-mep",
"elf32-mep-little")
OUTPUT_ARCH(mep)
ENTRY(_reset)

23
libgloss/mep/sim-crt0.S
View File

@@ -113,6 +113,17 @@ _start:
movh $sp, %uhi(__stack_table)
or3 $sp, $sp, %lo(__stack_table)
# initialize sp, gp, tp
# get CPU ID
ldc $0, $id
srl $0, 16
# load ID-specific stack pointer
sl2ad3 $0, $0, $sp # $0 = ($0 << 2) + $sp
lw $sp,($0) # $sp = *($0)
mov $0,0xfff8
and $sp, $0
#ifndef NOVEC
# copy exception vector table
@@ -294,14 +305,6 @@ _start:
.Lend_dc:
# NOVEC
#endif
# initialize sp, gp, tp
# get CPU ID
ldc $0, $id
srl $0, 16
# load ID-specific stack pointer
sl2ad3 $0, $0, $sp # $0 = ($0 << 2) + $sp
lw $sp,($0) # $sp = *($0)
mov $0, 0
movh $gp, %uhi(__sdabase)
@@ -385,13 +388,13 @@ _exit_in_progress: .word 0
.section .init
__invoke_init_section:
add $sp, -4
add $sp, -8
ldc $0, $lp
sw $0, ($sp)
.section .fini
__invoke_fini_section:
add $sp, -4
add $sp, -8
ldc $0, $lp
sw $0, ($sp)

4
libgloss/mep/sim-crtn.S
View File

@@ -13,11 +13,11 @@
.section .init
lw $1, ($sp)
stc $1, $lp
add $sp, 4
add $sp, 8
ret
.section .fini
lw $1, ($sp)
stc $1, $lp
add $sp, 4
add $sp, 8
ret