[syslinux:pathbased] core: use assembly for the .stack section

[syslinux-bot for H. Peter Anvin]

Commit-ID:  e81b84b3b74ea3b3c1ebd1871e24868e54411d2b
Gitweb:     http://syslinux.zytor.com/commit/e81b84b3b74ea3b3c1ebd1871e24868e54411d2b
Author:     H. Peter Anvin <hpa at zytor.com>
AuthorDate: Sat, 6 Mar 2010 21:29:47 -0800
Committer:  H. Peter Anvin <hpa at zytor.com>
CommitDate: Sat, 6 Mar 2010 21:29:47 -0800

core: use assembly for the .stack section

Use assembly to define the .stack section, so that it get proper
attributes.

Signed-off-by: H. Peter Anvin <hpa at zytor.com>


---
 core/layout.inc  |   13 +++++++++++--
 core/syslinux.ld |    4 +---
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/core/layout.inc b/core/layout.inc
index e453b26..dab27dd 100644
--- a/core/layout.inc
+++ b/core/layout.inc
@@ -27,7 +27,7 @@ BSS_START	equ 0800h
 TEXT_START	equ 7C00h
 
 ;
-; Stack layout
+; 16-bit stack layout
 ;
 ; PXELINUX: There are apparently some AMI BIOSes in the field which
 ; put their BEV stack somewhere below 7C00h (and therefore don't
@@ -50,10 +50,19 @@ STACK_BASE	equ STACK_TOP - STACK_LEN
 LATEBSS_START	equ 0B800h
 
 ;
+; 32-bit stack layout
+;
+		global STACK32_LEN
+STACK32_LEN	equ 64*1024
+
+		section	.stack		nobits write align=4096
+		resb STACK32_LEN
+
+;
 ; The various sections and their relationship
 ;
 		; Use .earlybss for things that MUST be in low memory.
-		section .earlybss	nobits
+		section .earlybss	nobits write
 		section .config		write progbits align=4
 		section .replacestub	exec write progbits align=16
 		section .gentextnr	exec write nobits align=16
diff --git a/core/syslinux.ld b/core/syslinux.ld
index 07bd8d4..90f26f1 100644
--- a/core/syslinux.ld
+++ b/core/syslinux.ld
@@ -346,14 +346,12 @@ SECTIONS
 	__bss_len = __bss_end - __bss_start;
 	__bss_dwords = (__bss_len + 3) >> 2;
 
-	. = ALIGN(65536);
-
 	/* XXX: This stack should be unified with the COM32 stack */
 	__stack_vma = .;
 	__stack_lma = .;	/* Dummy */
 	.stack (NOLOAD) : AT(__stack_lma) {
 		__stack_start = .;
-		. += STACK32_LEN;
+		*(.stack)
 		__stack_end = .;
 	}
 	__stack_len = __stack_end - __stack_start;