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adapt example linker scripts to new syntax and new segments

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3622 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cpg 2005-09-03 21:04:05 +00:00
parent 142c131f06
commit 9b1ee341aa
1 changed files with 26 additions and 18 deletions
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44
doc/atari.sgml
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@ -7,7 +7,7 @@
url="mailto:shawnjefferson@24fightingchickens.com" url="mailto:shawnjefferson@24fightingchickens.com"
name="shawnjefferson@24fightingchickens.com"> and name="shawnjefferson@24fightingchickens.com"> and
Christian Groessler, <htmlurl url="mailto:cpg@aladdin.de" name="cpg@aladdin.de"> Christian Groessler, <htmlurl url="mailto:cpg@aladdin.de" name="cpg@aladdin.de">
<date>11-Aug-2005 <date>03-Sep-2005
<abstract> <abstract>
An overview over the Atari runtime system as it is implemented for the cc65 C An overview over the Atari runtime system as it is implemented for the cc65 C
@ -316,20 +316,23 @@ MEMORY {
SECHDR: start = $0000, size = $4, file = %O; # second load chunk SECHDR: start = $0000, size = $4, file = %O; # second load chunk
RAM: start = $8000, size = $3C20, file = %O; # $3C20: matches upper bound $BC1F RAM: start = $8000, size = $3C20, file = %O; # $3C20: matches upper bound $BC1F
TRAILER: start = $0000, size = $0006, file = %O;
} }
SEGMENTS { SEGMENTS {
EXEHDR: load = BANK, type = wprot; EXEHDR: load = BANK, type = ro;
NEXEHDR: load = HEADER, type = wprot; # first load chunk NEXEHDR: load = HEADER, type = ro; # first load chunk
CODE: load = RAMLO, type = wprot, define = yes; LOWCODE: load = RAMLO, type = ro, define = yes, optional = yes;
INIT: load = RAMLO, type = ro, optional = yes;
CODE: load = RAMLO, type = ro, define = yes;
CHKHDR: load = SECHDR, type = wprot; # second load chunk CHKHDR: load = SECHDR, type = ro; # second load chunk
RODATA: load = RAM, type = wprot, define = yes; RODATA: load = RAM, type = ro, define = yes;
DATA: load = RAM, type = rw, define = yes; DATA: load = RAM, type = rw, define = yes;
BSS: load = RAM, type = bss, define = yes; BSS: load = RAM, type = bss, define = yes;
ZEROPAGE: load = ZP, type = zp; ZEROPAGE: load = ZP, type = zp;
AUTOSTRT: load = RAM, type = wprot; # defines program entry point AUTOSTRT: load = TRAILER, type = ro; # defines program entry point
} }
FEATURES { FEATURES {
CONDES: segment = RODATA, CONDES: segment = RODATA,
@ -343,6 +346,7 @@ FEATURES {
} }
SYMBOLS { SYMBOLS {
__STACKSIZE__ = $800; # 2K stack __STACKSIZE__ = $800; # 2K stack
__RESERVED_MEMORY__: value = $0, weak = yes;
} }
</verb></tscreen> </verb></tscreen>
<p> <p>
@ -363,13 +367,13 @@ memory area).
The contents of the new NEXEHDR and CHKHDR segments come from this The contents of the new NEXEHDR and CHKHDR segments come from this
file (split.s): file (split.s):
<tscreen><verb> <tscreen><verb>
.import __CODE_LOAD__, __BSS_LOAD__, __CODE_SIZE__ .import __LOWCODE_LOAD__, __BSS_LOAD__, __CODE_SIZE__
.import __DATA_LOAD__, __RODATA_LOAD__ .import __CODE_LOAD__, __DATA_LOAD__, __RODATA_LOAD__
.segment "NEXEHDR" .segment "NEXEHDR"
.word $FFFF ; EXE file magic number .word $FFFF ; EXE file magic number
; 1st load chunk ; 1st load chunk
.word __CODE_LOAD__ .word __LOWCODE_LOAD__
.word __CODE_LOAD__ + __CODE_SIZE__ - 1 .word __CODE_LOAD__ + __CODE_SIZE__ - 1
.segment "CHKHDR" .segment "CHKHDR"
@ -400,20 +404,23 @@ MEMORY {
SECHDR: start = $0000, size = $4, file = %O; # second load chunk SECHDR: start = $0000, size = $4, file = %O; # second load chunk
RAM: start = $8000, size = $3C20, file = %O; # $3C20: matches upper bound $BC1F RAM: start = $8000, size = $3C20, file = %O; # $3C20: matches upper bound $BC1F
TRAILER: start = $0000, size = $0006, file = %O;
} }
SEGMENTS { SEGMENTS {
EXEHDR: load = BANK, type = wprot; # discarded old EXE header EXEHDR: load = BANK, type = ro; # discarded old EXE header
NEXEHDR: load = HEADER, type = wprot; # first load chunk NEXEHDR: load = HEADER, type = ro; # first load chunk
RODATA: load = RAMLO, type = wprot, define = yes; RODATA: load = RAMLO, type = ro, define = yes;
DATA: load = RAMLO, type = rw, define = yes; DATA: load = RAMLO, type = rw, define = yes;
CHKHDR: load = SECHDR, type = wprot; # second load chunk CHKHDR: load = SECHDR, type = ro; # second load chunk
CODE: load = RAM, type = wprot, define = yes; LOWCODE: load = RAM, type = ro, define = yes, optional = yes;
INIT: load = RAM, type = ro, optional = yes;
CODE: load = RAM, type = ro, define = yes;
BSS: load = RAM, type = bss, define = yes; BSS: load = RAM, type = bss, define = yes;
ZEROPAGE: load = ZP, type = zp; ZEROPAGE: load = ZP, type = zp;
AUTOSTRT: load = RAM, type = wprot; # defines program entry point AUTOSTRT: load = TRAILER, type = ro; # defines program entry point
} }
FEATURES { FEATURES {
CONDES: segment = RODATA, CONDES: segment = RODATA,
@ -427,12 +434,13 @@ FEATURES {
} }
SYMBOLS { SYMBOLS {
__STACKSIZE__ = $800; # 2K stack __STACKSIZE__ = $800; # 2K stack
__RESERVED_MEMORY__: value = $0, weak = yes;
} }
</verb></tscreen> </verb></tscreen>
New contents for NEXEHDR and CHKHDR are needed (split2.s): New contents for NEXEHDR and CHKHDR are needed (split2.s):
<tscreen><verb> <tscreen><verb>
.import __CODE_LOAD__, __BSS_LOAD__, __DATA_SIZE__ .import __LOWCODE_LOAD__, __BSS_LOAD__, __DATA_SIZE__
.import __DATA_LOAD__, __RODATA_LOAD__ .import __DATA_LOAD__, __RODATA_LOAD__
.segment "NEXEHDR" .segment "NEXEHDR"
@ -441,7 +449,7 @@ New contents for NEXEHDR and CHKHDR are needed (split2.s):
.word __DATA_LOAD__ + __DATA_SIZE__ - 1 .word __DATA_LOAD__ + __DATA_SIZE__ - 1
.segment "CHKHDR" .segment "CHKHDR"
.word __CODE_LOAD__ .word __LOWCODE_LOAD__
.word __BSS_LOAD__ - 1 .word __BSS_LOAD__ - 1
</verb></tscreen> </verb></tscreen>