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Fixed problems with the startup code (Greg King): Interrupts must be hooked

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before calling initlib because initlib calls contructors and may install
drivers, which enable hardware interrupts. Similar for donelib.

See also R3897 where this change was done for other platforms.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3951 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2009-02-22 18:10:01 +00:00
parent e5cbba264f
commit d28ba06f79
2 changed files with 19 additions and 16 deletions
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22
libsrc/pet/crt0.s
View File

@ -70,10 +70,6 @@ L1: lda sp,x
lda MEMSIZE+1
sta sp+1 ; Set argument stack ptr
; Call module constructors
jsr initlib
; If we have IRQ functions, chain our stub into the IRQ vector
lda #<__INTERRUPTOR_COUNT__
@ -89,13 +85,21 @@ L1: lda sp,x
stx IRQVec+1
cli
; Call module constructors
NoIRQ1: jsr initlib
; Push arguments and call main()
NoIRQ1: jsr callmain
jsr callmain
; Call module destructors. This is also the _exit entry.
_exit: pha ; Save the return code on stack
_exit: pha ; Save the return code on stack
jsr donelib
; Reset the IRQ vector if we chained it.
lda #<__INTERRUPTOR_COUNT__
beq NoIRQ2
lda IRQInd+1
@ -105,13 +109,9 @@ _exit: pha ; Save the return code on stack
stx IRQVec+1
cli
; Run module destructors
NoIRQ2: jsr donelib ; Run module destructors
; Copy back the zero page stuff
ldx #zpspace-1
NoIRQ2: ldx #zpspace-1
L2: lda zpsave,x
sta sp,x
dex

13
libsrc/plus4/crt0.s
View File

@ -80,16 +80,16 @@ L1: lda sp,x
jsr zerobss
; Call module constructors
jsr initlib
; Initialize irqcount, which means that from now own custom linked in IRQ
; handlers (via condes) will be called.
lda #.lobyte(__INTERRUPTOR_COUNT__*2)
sta irqcount
; Call module constructors
jsr initlib
; Push arguments and call main()
jsr callmain
@ -97,9 +97,12 @@ L1: lda sp,x
; Back from main (this is also the _exit entry). Run module destructors.
_exit: pha ; Save the return code
jsr donelib ; Run module destructors
; Disable chained IRQ handlers
lda #0
sta irqcount ; Disable custom IRQ handlers
jsr donelib ; Run module destructors
; Copy back the zero page stuff