Implement quick_exit() and at_quick_exit() from C11.
Also, make all the exit functions quit via RTL if #pragma rtl was used. This fixes #19.
This commit is contained in:
Stephen Heumann
parent
07011e5b05
commit
ee1b7e606d
70
cc.asm
70
cc.asm
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@ -184,6 +184,8 @@ TAB equ 9 TAB key code
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stz ~ExitList no exit routines, yet
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stz ~ExitList+2
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stz ~QuickExitList
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stz ~QuickExitList+2
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case on
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jsl ~InitIO reset standard I/O
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case off
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@ -359,6 +361,10 @@ start ds 2 start of the command line string
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stz ~ExitList no exit routines, yet
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stz ~ExitList+2
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stz ~QuickExitList
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stz ~QuickExitList+2
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lda #~RTL set up so exit(), etc. call ~RTL
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sta ~C_Quit+1
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stz targv argv[0] = NULL
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stz targv+2
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@ -439,14 +445,78 @@ lb4 pld return
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rts
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end
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****************************************************************
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*
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* ~QuickExit - call quick exit routines
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*
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* Inputs:
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* ~QuickExitList - list of quick exit routines
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*
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****************************************************************
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*
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~QuickExit start
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ptr equ 3 pointer to exit routines
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;
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; Set up our stack frame
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;
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phb
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phk
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plb
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ph4 ~QuickExitList set up our stack frame
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phd
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tsc
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tcd
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;
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; Call the quick exit functions
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;
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lb1 lda ptr if the pointer is non-nil then
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ora ptr+2
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beq lb3
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pea +(lb2-1)|-8 call the function
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pea +(lb2-1)|8
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phb
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pla
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ldy #5
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lda [ptr],Y
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pha
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dey
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dey
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lda [ptr],Y
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pha
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phb
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pla
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rtl
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lb2 ldy #2 dereference the pointer
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lda [ptr],Y
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tax
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lda [ptr]
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sta ptr
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stx ptr+2
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bra lb1
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;
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; return
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;
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lb3 pld return
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pla
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pla
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plb
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rts
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end
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****************************************************************
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*
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* ~ExitList - list of exit routines
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* ~QuickExitList - list of quick exit routines
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* ~C_Quit - call to quit (may be changed to call ~RTL)
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*
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****************************************************************
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*
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~ExitList start
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ds 4
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~QuickExitList entry
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ds 4
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~C_Quit entry
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jmp ~QUIT
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end
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****************************************************************
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76
stdlib.asm
76
stdlib.asm
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@ -37,7 +37,7 @@ abort start
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ph2 #SIGABRT
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jsl raise
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lda #-1
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jmp ~QUIT
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jmp ~C_QUIT
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end
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****************************************************************
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@ -159,6 +159,60 @@ rval equ 5 return value
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lb1 creturn 2:rval
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end
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****************************************************************
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*
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* int at_quick_exit(func)
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* void (*func)();
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*
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* This function is used to build a list of functions that will
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* be called as part of the quick exit processing.
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*
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* Inputs:
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* func - address of the function to call on quick exit
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*
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* Outputs:
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* Returns 0 if successful, -1 if not.
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*
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****************************************************************
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*
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at_quick_exit start
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ptr equ 1 work pointer
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rval equ 5 return value
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csubroutine (4:func),6
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lda #-1 assume we will fail
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sta rval assume we will fail
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dec4 func we need the addr-1, not the addr
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ph4 #8 get space for the record
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jsl malloc
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stx ptr+2
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sta ptr
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ora ptr+2 quit now if we failed
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beq lb1
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ldy #2 place the record in the exit list
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lda >~QUICKEXITLIST
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sta [ptr]
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lda >~QUICKEXITLIST+2
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sta [ptr],Y
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lda ptr
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sta >~QUICKEXITLIST
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lda ptr+2
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sta >~QUICKEXITLIST+2
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iny place the function address in the record
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iny
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lda func
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sta [ptr],Y
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iny
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iny
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lda func+2
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sta [ptr],Y
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inc rval success...
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lb1 creturn 2:rval
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end
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****************************************************************
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*
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* atof - convert a string to a float
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@ -331,14 +385,13 @@ div_t ds 4
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****************************************************************
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*
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* void exit(status)
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* int status;
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* void exit(int status);
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*
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* void _exit(status)
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* int status;
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* void _exit(int status);
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*
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* void _Exit(status)
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* int status;
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* void _Exit(int status);
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*
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* void quick_exit(int status);
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*
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* Stop the program. Exit cleans up, _exit does not. Status
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* is the status returned to the shell.
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@ -354,7 +407,14 @@ exit start
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_exit entry
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_Exit entry
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lda 4,S
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jmp ~QUIT
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jmp ~C_QUIT
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end
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quick_exit start
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jsr ~QUICKEXIT
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lda 4,S
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jmp ~C_QUIT
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end
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****************************************************************
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