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2011-12-12 Gedare Bloom <gedare@rtems.org>

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PR bsps/1989
	* shared/start/start.S, shared/startup/linkcmds: Boot stack and heap
	space improvements.
This commit is contained in:
Gedare Bloom
2011-12-12 19:31:48 +00:00
parent 8bc6b663f1
commit a1a25aeb58
3 changed files with 19 additions and 32 deletions
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6
c/src/lib/libbsp/sparc64/ChangeLog
View File

@@ -1,3 +1,9 @@
2011-12-12 Gedare Bloom <gedare@rtems.org>
PR bsps/1989
* shared/start/start.S, shared/startup/linkcmds: Boot stack and heap
space improvements.
2011-12-12 Gedare Bloom <gedare@rtems.org>
PR bsps/1988

30
c/src/lib/libbsp/sparc64/shared/start/start.S
View File

@@ -53,20 +53,6 @@
.register %g6, #scratch
.register %g7, #scratch
#if 0
#define _BSP_DEBUG
#endif
#if _BSP_DEBUG
/*
* This is for debug and script support to identify RTEMS app termination
*/
.section .data
.align 8
_end_token_string:
.asciz "END_TOKEN\n"
#endif
.section BOOTSTRAP, "ax"
PUBLIC(_start)
@@ -148,20 +134,20 @@ setstack:
call SYM(boot_card)
sub %sp, 0x60, %sp ! make room on stack (necessary?)
#if _BSP_DEBUG
/* execution returns here when RTEMS terminates */
sethi %hi(_end_token_string), %g1
add %g1, %lo(_end_token_string), %o0
call SYM(printk)
nop
#endif
call SYM(halt)
nop
halted: nop
b SYM(halted)
.section BOOTSTRAP
.align CPU_ALIGNMENT
.space 32768 - CPU_MINIMUM_STACK_FRAME_SIZE ! 32K boot stack grows down
.global StackStart
StackStart:
.space CPU_MINIMUM_STACK_FRAME_SIZE ! initial stack frame
.section BOOTSTRAP
.align CPU_ALIGNMENT
param_space:
.space 8

15
c/src/lib/libbsp/sparc64/shared/startup/linkcmds
View File

@@ -14,8 +14,7 @@
*/
RamBase = DEFINED(RamBase) ? RamBase : 0x0;
RamSize = DEFINED(RamSize) ? RamSize : 12M;
HeapSize = DEFINED(HeapSize) ? HeapSize : 1M;
StackSize = DEFINED(StackSize) ? StackSize : 1M;
HeapSize = DEFINED(HeapSize) ? HeapSize : 2M;
RAM_END = RamBase + RamSize;
@@ -24,10 +23,9 @@ OUTPUT_FORMAT("elf64-sparc")
ENTRY(start)
MEMORY
{
ram : ORIGIN = 0x0, LENGTH = 12M
}
{
ram : ORIGIN = 0x0, LENGTH = 12M
}
SECTIONS
{
@@ -151,7 +149,7 @@ SECTIONS
. = ALIGN (16);
_endtext = . ;
_etext = . ;
} > ram
} > ram
.data : AT (ADDR (.text) + SIZEOF (.text))
{
@@ -196,9 +194,6 @@ SECTIONS
. += HeapSize;
PROVIDE (HeapBase = .);
. += HeapSize;
. += StackSize;
PROVIDE (__stack = .);
PROVIDE (StackStart = .);
} > ram
}