e5f4633c39
which included commits to RCS files with non-trunk default branches. git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@5 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
215 lines
4.6 KiB
Plaintext
215 lines
4.6 KiB
Plaintext
divert(-1) # don t output this trash to C
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# Preprocessor for i386 linux
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# a macro to get the hd of a list
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define(m4_hd,`ifelse(index(`$1',`,'),-1,`substr(`$1',1,eval(len(`$1')-2))',dnl
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`substr(`$1',1,decr(index(`$1',`,')))')')
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# a macro to get the tail of a list
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define(m4_tl,`ifelse(index(`$1',`,'),-1,`',dnl
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`(substr(`$1',incr(index(`$1',`,')))')')
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#macros to split a string
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define(substr_up_to,`substr($1,0,index($1,$2))')
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define(substr_after,`substr($1,incr(index($1,$2)))')
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# a macro to iterate over members of a list
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define(`foreach',dnl
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`pushdef(`$1',m4_hd(`$2'))_foreach(`$1',m4_tl(`$2'),`$3')popdef(`$1')')
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define(`_foreach',`$3'`ifelse($2,`',,dnl
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`define(`$1',m4_hd($2))_foreach(`$1',m4_tl(`$2'),`$3')')')
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define(`m4_rev',`ifelse($#,0,,$#,1,``$1'',`m4_rev(shift($@)),`$1'')')
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# same as above but backwards
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define(`foreachb',`foreach(`$1',(m4_rev$2),`$3')')
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# macros to process an absmi definition
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define(defami, `define(`m4_i_of',m4_opcode_size)'`define(`m4_ami_args',(shift($*)))'
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`$1:ifelse($2,`',`',
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`foreach(`argspec',(shift($*)),`m4_arg(substr_up_to(argspec,:),substr_after(argspec,:))')')m4_redef(InstructionSize,m4_i_of)')
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define(endami,
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`foreach(`argspec',m4_ami_args,`m4_endami(substr_up_to(argspec,:))')'`#undef InstructionSize')
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define(m4_endami,`ifelse($1,,,#undef $1
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)')
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define(m4_arg,`m4_redef($1,(*(($2 *) (S_P+m4_i_of))))define(`m4_i_of',eval(m4_i_of+m4_$2_size))')
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define(m4_redef,`
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`#define' $1 $2')
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#define a multiple push operation
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define(multiple_push,`define(`m4_i',eval($#-1))$1 -= m4_i foreach(`m4arg',(shift($*)),`m4_push1($1,`m4arg')')')
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define(m4_push1,`define(`m4_i',eval(m4_i-1))ifelse(m4arg,dummy,,`;
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$1[m4_i] = (CELL) m4arg ')')
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define(m4_n_args,`define(`m4_n',$#)')
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#define a multiple pop operation
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define(multiple_pop,`define(`m4_i',0)foreachb(`m4arg',(shift($*)),`m4_pop1($1)')$1 += m4_i')
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define(multiple_restore,`define(`m4_i',0)foreachb(`m4arg',(shift($*)),`m4_restore1($1)')')
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define(multiple_shorten,`define(`m4_i',-1)foreach(`m4arg',(shift($*)),`m4_shorten1($1)')')
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define(m4_pop1,`ifelse(m4arg,dummy,,`m4arg = (typeof(m4arg)) $1[m4_i];
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')define(`m4_i',eval(m4_i+1))')
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define(m4_restore1,`ifelse(m4arg,dummy,,`m4arg = (typeof(m4arg)) $1[m4_i];
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')define(`m4_i',eval(m4_i+1))')
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define(m4_shorten1,`ifelse(m4arg,dummy,,`m4arg = (typeof(m4arg)) $1[m4_i];
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')define(`m4_i',eval(m4_i-1))')
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# these are machine dependent
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define(m4_reg_size,4)
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define(m4_small_size,4)
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define(m4_long_size,4)
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define(m4_opcode_size,4)
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define(ShadowRegister,`
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define(shadow_$1)
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#define LoadShadow_$1 S_$1 = (typeof(S_$1)) $1;
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#define StoreShadow_$1 $1 = (typeof($1))S_$1;
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')
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define(ShadowRegisterDeclarations,
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`ifdef(shadow_P,,` register char *S_P;
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')'
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`ifdef(shadow_Y,,` register CELL *S_Y;
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')
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')
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define(DerefA, dnl (ptr,NonVarCase,VarCase)
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`` {
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register CELL *VarValue = (CELL *)$1, NonVarValue;
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while(1) {
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if(IsVarTerm(NonVarValue = *VarValue) ) {
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if(NonVarValue == (CELL) VarValue) {
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$3;
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break;
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}
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VarValue = (CELL *) NonVarValue;
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} else {
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$2;
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break;
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}
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}
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}'')
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define(DerefD, dnl (data,NonVarCase,VarCase)
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``{
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register CELL *VarValue, NonVarValue=(CELL) $1;
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while(1) {
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if(IsVarTerm(NonVarValue)) {
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NonVarValue = *(VarValue = (CELL *) NonVarValue);
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if(NonVarValue == (CELL) VarValue) {
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$3;
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break;
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}
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} else {
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$2;
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break;
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}
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}
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}'')
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define(DerefD1, dnl (data,NonVarCase,VarCase)
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`` {
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register CELL *VarValue1, NonVarValue1=(CELL) $1;
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while(1) {
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if(IsVarTerm(NonVarValue1)) {
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NonVarValue1 = *(VarValue1 = (CELL *) NonVarValue1);
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if(NonVarValue1 == (CELL) VarValue1) {
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$3;
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break;
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}
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} else {
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$2;
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break;
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}
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}
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}'')
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define(DerefI, dnl (data,NonVarCase,VarCase)
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``{
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register CELL *VarValue;
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I_R=(CELL) $1;
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while(1) {
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if(IsVarTerm(I_R)) {
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I_R = *(VarValue = (CELL *) I_R);
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if(I_R == (CELL) VarValue) {
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$3;
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break;
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}
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}
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else { $2; break; }
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}
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}'')
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divert
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#define Y YENV
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ShadowRegister(P)
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ShadowRegister(Y)
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#define shadow_all() \
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TestCount = 0; \
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LoadShadow_P; \
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LoadShadow_Y; \
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#define unshadow_all() \
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StoreShadow_P; \
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StoreShadow_Y;
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#ifndef LoadShadow_CP
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#define S_CP CP
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#endif
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#ifndef LoadShadow_ENV
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#define S_ENV ENV
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#endif
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#ifndef LoadShadow_B
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#define S_B B
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#endif
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#ifndef LoadShadow_H
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#define S_H H
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#endif
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#ifndef LoadShadow_TR
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#define S_TR TR
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#endif
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#ifndef LoadShadow_N
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#define S_N N
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#endif
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#ifndef LoadShadow_BH
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#define LoadShadow_BH(X) HB = (CELL *) X
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#define S_BH HB
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#endif
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#ifndef LoadShadow_S
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#define LoadShadow_S()
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#define S_S S
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#endif
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#define CHECK(B) if(--TestCount <= 0) { TestCount=10; B }
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#define ENSURECHECK() TestCount=1
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#define small long
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#define reg long
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