103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
#ifndef _HEADERS_STABS_H
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#define _HEADERS_STABS_H
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/* These are some macros for handling of symboltable information
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*/
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/* linker can use symbol b for symbol a if a is not defined */
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#define ALIAS(a,b) asm(".stabs \"_" #a "\",11,0,0,0;.stabs \"_" #b "\",1,0,0,0")
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/* add symbol a to list b (type c (22=text 24=data 26=bss)) */
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#define ADD2LIST(a,b,c) asm(".stabs \"_" #b "\"," #c ",0,0,_" #a )
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/* Install private constructors and destructors pri MUST be -127<=pri<=127 */
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#define ADD2INIT(a,pri) ADD2LIST(a,__INIT_LIST__,22); \
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asm(".stabs \"___INIT_LIST__\",20,0,0," #pri "+128")
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#define ADD2EXIT(a,pri) ADD2LIST(a,__EXIT_LIST__,22); \
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asm(".stabs \"___EXIT_LIST__\",20,0,0," #pri "+128")
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/* Add to library list */
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#define ADD2LIB(a) ADD2LIST(a,__LIB_LIST__,24)
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/* This one does not really handle symbol tables
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* it's just pointless to write a header file for one macro
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*
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* define a as a label for an absolute address b
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*/
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#define ABSDEF(a,b) asm("_" #a "=" #b ";.globl _" #a )
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/* Generate assembler stub for a shared library entry
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* and add it to the jump table
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* ADDTABL_X(name,...) means function with X arguments
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* ADDTABL_END() ends the list
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* Usage: ADDTABL_2(AddHead,a0,a1);
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* No more than 4 arguments supported, use structures!
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*/
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#define _ADDTABL_START(name) \
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asm(".globl ___" #name); \
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asm("___" #name ":\tmovel a4,sp@-")
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#define _ADDTABL_ARG(arg) \
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asm("\tmovel " #arg ",sp@-")
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#define _ADDTABL_CALL(name) \
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asm("\tmovel a6@(40:W),a4"); \
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asm("\tbsr _" #name)
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#define _ADDTABL_END0(name,numargs) \
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asm("\tmovel sp@+,a4"); \
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asm("\trts"); \
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ADD2LIST(__##name,__FuncTable__,22)
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#define _ADDTABL_END2(name,numargs) \
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asm("\taddqw #4*" #numargs ",sp"); \
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asm("\tmovel sp@+,a4"); \
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asm("\trts"); \
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ADD2LIST(__##name,__FuncTable__,22)
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#define _ADDTABL_ENDN(name,numargs) \
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asm("\taddaw #4*" #numargs ",sp"); \
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asm("\tmovel sp@+,a4"); \
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asm("\trts"); \
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ADD2LIST(__##name,__FuncTable__,22)
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#define ADDTABL_0(name) \
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_ADDTABL_START(name); \
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_ADDTABL_CALL(name); \
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_ADDTABL_END0(name,0)
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#define ADDTABL_1(name,arg1) \
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_ADDTABL_START(name); \
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_ADDTABL_ARG(arg1); \
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_ADDTABL_CALL(name); \
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_ADDTABL_END2(name,1)
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#define ADDTABL_2(name,arg1,arg2) \
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_ADDTABL_START(name); \
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_ADDTABL_ARG(arg2); \
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_ADDTABL_ARG(arg1); \
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_ADDTABL_CALL(name); \
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_ADDTABL_END2(name,2)
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#define ADDTABL_3(name,arg1,arg2,arg3) \
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_ADDTABL_START(name); \
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_ADDTABL_ARG(arg3); \
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_ADDTABL_ARG(arg2); \
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_ADDTABL_ARG(arg1); \
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_ADDTABL_CALL(name); \
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_ADDTABL_ENDN(name,3)
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#define ADDTABL_4(name,arg1,arg2,arg3,arg4) \
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_ADDTABL_START(name); \
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_ADDTABL_ARG(arg4); \
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_ADDTABL_ARG(arg3); \
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_ADDTABL_ARG(arg2); \
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_ADDTABL_ARG(arg1); \
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_ADDTABL_CALL(name); \
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_ADDTABL_ENDN(name,4)
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#define ADDTABL_END() asm(".stabs \"___FuncTable__\",20,0,0,-1")
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#endif /* _HEADERS_STABS_H */
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