Leahnaya/buildscripts
1
0
Fork 0
mirror of https://github.com/devkitPro/buildscripts.git synced 2026-04-20 17:37:22 -05:00
Code Issues Actions Packages Projects Releases Wiki Activity

moved bss & data to ewram, sbss goes in dtcm instead

Browse Source
This commit is contained in:
Dave Murphy 2005-07-12 05:42:59 +00:00
parent 3deae0881b
commit 850996d619
2 changed files with 35 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
dkarm/crtls/ds_arm9.ld
View File

@ -5,15 +5,12 @@ ENTRY(_start)
MEMORY {
rom : ORIGIN = 0x08000000, LENGTH = 32M
iwram : ORIGIN = 0x037f8000, LENGTH = 32K
ewram : ORIGIN = 0x02000000, LENGTH = 4M - 4k
dtcm : ORIGIN = 0x00800000, LENGTH = 16K
itcm : ORIGIN = 0x00000000, LENGTH = 32K
}
__itcm_start = 0x00000000;
__iwram_start = 0x037f8000;
__iwram_end = 0x03800000;
__ewram_end = 0x02400000;
__eheap_end = 0x023ff000;
__dtcm_start = 0x00800000;
@ -110,19 +107,20 @@ SECTIONS
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} >ewram = 0xff
__iwram_lma = . ;
.iwram __iwram_start : AT (__iwram_lma)
.data ALIGN(4) :
{
__iwram_start = ABSOLUTE(.) ;
*(.iwram)
*iwram.*(.text)
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} >iwram = 0xff
__data_start = ABSOLUTE(.);
*(.data)
*(.data.*)
*(.gnu.linkonce.d*)
CONSTRUCTORS
. = ALIGN(4);
} >ewram = 0xff
__iwram_end = . ;
__data_end = . ;
__dtcm_lma = __iwram_lma + SIZEOF(.iwram);
__dtcm_lma = . ;
.dtcm __dtcm_start : AT (__dtcm_lma)
{
@ -133,35 +131,8 @@ SECTIONS
} >dtcm = 0xff
__dtcm_end = . ;
__data_lma = __dtcm_lma + SIZEOF(.dtcm) ;
.data ALIGN(4) : AT (__data_lma)
{
__data_start = ABSOLUTE(.);
*(.data)
*(.data.*)
*(.gnu.linkonce.d*)
CONSTRUCTORS
. = ALIGN(4);
} >dtcm = 0xff
__data_end = . ;
.bss ALIGN(4) :
{
__bss_start = ABSOLUTE(.);
__bss_start__ = ABSOLUTE(.);
*(.dynbss)
*(.gnu.linkonce.b*)
*(COMMON)
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
} >dtcm
__bss_end = . ;
__bss_end__ = . ;
__itcm_lma = __data_lma + SIZEOF(.data);
__itcm_lma = __dtcm_lma + SIZEOF(.dtcm);
.itcm __itcm_start : AT (__itcm_lma)
{
@ -171,18 +142,33 @@ SECTIONS
. = ALIGN(4);
} >itcm = 0xff
__itcm_end = . ;
.sbss __dtcm_end :
{
__sbss_start = ABSOLUTE(.);
__sbss_start__ = ABSOLUTE(.);
*(.sbss)
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
__sbss_end = ABSOLUTE(.);
} >dtcm
__sbss_lma = __itcm_lma + SIZEOF(.itcm) ;
__bss_lma = __itcm_lma + SIZEOF(.itcm) ;
__appended_data = __itcm_lma + SIZEOF(.itcm) ;
.bss __bss_lma : AT (__bss_lma)
{
__bss_start = ABSOLUTE(.);
__bss_start__ = ABSOLUTE(.);
*(.dynbss)
*(.gnu.linkonce.b*)
*(COMMON)
. = ALIGN(4); /* REQUIRED. LD is flaky without it. */
__bss_end = ABSOLUTE(.) ;
__bss_end__ = ABSOLUTE(.) ;
} >ewram
.sbss __sbss_lma : AT (__sbss_lma)
{
__sbss_start = ABSOLUTE(.);
*(.sbss)
. = ALIGN(4);
} >ewram
__sbss_end = . ;
_end = . ;
__end__ = . ;

10
dkarm/crtls/ds_arm9_crt0.s
View File

@ -152,16 +152,6 @@ _start:
msr cpsr, r0
ldr sp, =__sp_usr @ Set user stack
ldr r1, =__data_lma @ Copy initialized data (data section) from LMA to VMA (ROM to RAM)
ldr r2, =__data_start
ldr r4, =__data_end
bl CopyMemCheck
ldr r1, =__iwram_lma @ Copy internal work ram (iwram section) from LMA to VMA (ROM to RAM)
ldr r2, =__iwram_start
ldr r4, =__iwram_end
bl CopyMemCheck
ldr r1, =__itcm_lma @ Copy instruction tightly coupled memory (itcm section) from LMA to VMA (ROM to RAM)
ldr r2, =__itcm_start
ldr r4, =__itcm_end