the10thwiz/cc65
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add STARTUP and LOWCODE segments

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@1601 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2002-11-23 11:10:50 +00:00
parent fe75b5c3f3
commit d7d86886b6
4 changed files with 25 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
libsrc/apple2/crt0.s
View File

@@ -7,7 +7,7 @@
.export _exit
.import initlib, donelib
.import zerobss, push0
.import __CODE_LOAD__, __BSS_LOAD__ ; Linker generated
.import __STARTUP_LOAD__, __BSS_LOAD__ ; Linker generated
.import _main
.include "zeropage.inc"
@@ -18,13 +18,18 @@
.segment "EXEHDR"
.word __CODE_LOAD__ ; Start address
.word __BSS_LOAD__ - __CODE_LOAD__ ; Size
.word __STARTUP_LOAD__ ; Start address
.word __BSS_LOAD__ - __STARTUP_LOAD__ ; Size
; ------------------------------------------------------------------------
; Actual code
; Create an empty LOWCODE segment to avoid linker warnings
.code
.segment "LOWCODE"
; ------------------------------------------------------------------------
; Place the startup code in a special segment.
.segment "STARTUP"
ldx #zpspace-1
L1: lda sp,x
@@ -91,6 +96,8 @@ L2: lda zpsave,x
jmp RESTOR
; ------------------------------------------------------------------------
; Data
.data