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[arch][microblaze] first semi functional context switch implementation

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This commit is contained in:
Travis Geiselbrecht
2015-01-31 17:31:03 -08:00
parent 436c5a885f
commit 0816848c82
15 changed files with 618 additions and 84 deletions
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170
arch/microblaze/linker.ld
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@@ -4,97 +4,111 @@ OUTPUT_ARCH(microblaze)
ENTRY(_start)
SECTIONS
{
. = 0; /* %KERNEL_BASE% + %KERNEL_LOAD_OFFSET%; */
. = %KERNEL_BASE% + %KERNEL_LOAD_OFFSET%;
_start = .;
_start = .;
/* text/read-only data */
/* set the load address to physical MEMBASE */
/* .text : AT(%MEMBASE% + %KERNEL_LOAD_OFFSET%) { */
.text : {
KEEP(*(.text.boot.vectab))
KEEP(*(.text.boot))
*(.text* .sram.text.glue_7* .gnu.linkonce.t.*)
}
/* text/read-only data */
/* set the load address to physical MEMBASE */
.text : AT(%MEMBASE% + %KERNEL_LOAD_OFFSET%) {
KEEP(*(.vectors))
KEEP(*(.text.boot))
*(.text* .gnu.linkonce.t.*)
}
.interp : { *(.interp) }
.hash : { *(.hash) }
.dynsym : { *(.dynsym) }
.dynstr : { *(.dynstr) }
.rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) }
.rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) }
.rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) }
.rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) }
.rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) }
.rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
.rel.got : { *(.rel.got) }
.rela.got : { *(.rela.got) }
.rel.ctors : { *(.rel.ctors) }
.rela.ctors : { *(.rela.ctors) }
.rel.dtors : { *(.rel.dtors) }
.rela.dtors : { *(.rela.dtors) }
.rel.init : { *(.rel.init) }
.rela.init : { *(.rela.init) }
.rel.fini : { *(.rel.fini) }
.rela.fini : { *(.rela.fini) }
.rel.bss : { *(.rel.bss) }
.rela.bss : { *(.rela.bss) }
.rel.plt : { *(.rel.plt) }
.rela.plt : { *(.rela.plt) }
.init : { *(.init) } =0x9090
.plt : { *(.plt) }
.interp : { *(.interp) }
.hash : { *(.hash) }
.dynsym : { *(.dynsym) }
.dynstr : { *(.dynstr) }
.rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) }
.rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) }
.rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) }
.rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) }
.rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) }
.rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
.rel.got : { *(.rel.got) }
.rela.got : { *(.rela.got) }
.rel.ctors : { *(.rel.ctors) }
.rela.ctors : { *(.rela.ctors) }
.rel.dtors : { *(.rel.dtors) }
.rela.dtors : { *(.rela.dtors) }
.rel.init : { *(.rel.init) }
.rela.init : { *(.rela.init) }
.rel.fini : { *(.rel.fini) }
.rela.fini : { *(.rela.fini) }
.rel.bss : { *(.rel.bss) }
.rela.bss : { *(.rela.bss) }
.rel.plt : { *(.rel.plt) }
.rela.plt : { *(.rela.plt) }
.init : { *(.init) }
.plt : { *(.plt) }
.rodata : ALIGN(4) {
__rodata_start = .;
*(.rodata .rodata.* .gnu.linkonce.r.*)
.rodata : ALIGN(4) {
__rodata_start = .;
*(.rodata .rodata.* .gnu.linkonce.r.*)
INCLUDE "arch/shared_rodata_sections.ld"
. = ALIGN(4);
__rodata_end = .;
}
. = ALIGN(4);
_SDATA2_START__ = .;
*(.sdata2)
_SDATA2_END__ = .;
__rodata_end = .;
}
.data : ALIGN(4) {
/* writable data */
__data_start_rom = .;
/* in one segment binaries, the rom data address is on top of the ram data address */
__data_start = .;
*(.data .data.* .gnu.linkonce.d.*)
.data : ALIGN(4) {
/* writable data */
__data_start_rom = .;
/* in one segment binaries, the rom data address is on top of the ram data address */
__data_start = .;
*(.data .data.* .gnu.linkonce.d.*)
INCLUDE "arch/shared_data_sections.ld"
}
__ctor_list = .;
KEEP(*(.ctors .init_array))
__ctor_end = .;
__dtor_list = .;
KEEP(*(.dtors .fini_array))
__dtor_end = .;
*(.got*)
*(.dynamic)
.ctors : ALIGN(4) {
__ctor_list = .;
KEEP(*(.ctors .init_array))
__ctor_end = .;
}
.dtors : ALIGN(4) {
__dtor_list = .;
KEEP(*(.dtors .fini_array))
__dtor_end = .;
}
.got : { *(.got.plt) *(.got) }
.dynamic : { *(.dynamic) }
/* read-write small data with initial value */
_SDATA_START__ = .;
*(.sdata)
_SDATA_END__ = .;
__data_end = .;
__data_end = .;
}
/* unintialized data (in same segment as writable data) */
.bss : ALIGN(4) {
KEEP(*(.bss.prebss.*))
. = ALIGN(4);
__bss_start = .;
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(4);
__bss_end = .;
}
_end = .;
/* unintialized data (in same segment as writable data) */
.bss : ALIGN(4) {
__bss_start = .;
/* . = %KERNEL_BASE% + %MEMSIZE%; */
_end_of_ram = .;
/* read only small variables without initial value */
_SBSS2_START__ = .;
*(.sbss2*)
_SBSS2_END__ = .;
/* Strip unnecessary stuff */
/DISCARD/ : { *(.comment .note .eh_frame) }
/* read-write small variables without initial value */
_sbss_start__ = .;
*(.sbss*)
_sbss_end__ = .;
/* regular bss */
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(4);
__bss_end = .;
}
_end = .;
. = %KERNEL_BASE% + %MEMSIZE%;
_end_of_ram = .;
/* Strip unnecessary stuff */
/DISCARD/ : { *(.comment .note .eh_frame) }
}