From 1981e9bc81e92f479c725e6ac60ff3bd419cefd0 Mon Sep 17 00:00:00 2001 From: Chris Xiong Date: Mon, 26 Oct 2015 22:57:45 +0800 Subject: Git and markdown sucks... --- tools/lsrc/lsrc.cpp | 78 ++++++++++++++++++++++++++--------------------------- 1 file changed, 39 insertions(+), 39 deletions(-) (limited to 'tools/lsrc/lsrc.cpp') diff --git a/tools/lsrc/lsrc.cpp b/tools/lsrc/lsrc.cpp index a31d248..56ffe96 100644 --- a/tools/lsrc/lsrc.cpp +++ b/tools/lsrc/lsrc.cpp @@ -5,7 +5,7 @@ * 2. DO NOT USE STL! * 3. if you don't like the rules above, you can ignore them though... */ -//parser: prehistoric version. +//parser: primitive version. #include #include #include @@ -26,13 +26,13 @@ * type=8 : function name */ SInst result[65537]; -int infunc,lc; +int infunc,lc,lops,lppos[8]; char line[256],fst[16]; -void error(const char *szFormat, ...) +void error(const char *szFormat,...) { va_list ap; - va_start(ap, szFormat); - vfprintf(stderr, szFormat, ap); + va_start(ap,szFormat); + vfprintf(stderr,szFormat,ap); va_end(ap); fprintf(stderr,"\n"); exit(1); @@ -44,9 +44,9 @@ int hexBit(char b) if(b>='A'&&b<='F')return b-'A'+10; return -1; } -Udata parseNumber(char *l,char *r,int mode)//0:real, 1:int +Udata parseNumber(char *l,char *r,int mode)//0:real, 1:int, 2:linenum { - int i=0,m=1;double d=0,mlt=0.1;Udata res; + int i=0,m=1,absln=1;double d=0,mlt=0.1;Udata res; char *c=l;res.d=0LL; if(*c=='x') { @@ -55,10 +55,12 @@ Udata parseNumber(char *l,char *r,int mode)//0:real, 1:int if(c!=r){res.r=nan("");return res;} res.i=m*i;return res; } - if(*c=='-')m=-1,++c; + if(*c=='+')m=1,++c,absln=0; + if(*c=='-')m=-1,++c,absln=0; for(;*c>='0'&&*c<='9'&&c!=r;++c)i*=10,i+=*c-'0'; - if(c==r){res.i=m*i;return res;} - if(*c!='.'||mode==1){res.r=nan("");return res;} + if(c==r) + {mode==2?res.i=(absln?m*i:lc+m*i):mode==1?res.i=m*i:res.r=(double)m*i;return res;} + if(*c!='.'||mode!=0){res.r=nan("");return res;} ++c; for(;*c>='0'&&*c<='9'&&c!=r;++c)d+=(*c-'0')*mlt,mlt*=0.1; if(c!=r){res.r=nan("");return res;} @@ -74,6 +76,7 @@ int parsePara(char *cont,char *contr,SPara *para,int mode) * 5:real only <-shouldn't this accept all?... * 6:real register only * 7:function name + * 8:line number */ { para->type=-1; @@ -155,7 +158,7 @@ int parsePara(char *cont,char *contr,SPara *para,int mode) return 0; } if(mode==1||mode==4||mode==6)return 1; - Udata tryi=parseNumber(cont,contr,1); + Udata tryi=mode==8?parseNumber(cont,contr,2):parseNumber(cont,contr,1); Udata tryr=parseNumber(cont,contr,0); if(isnan(tryr.r))return 1; if(isnan(tryi.r)&&mode==3)return 1; @@ -181,7 +184,8 @@ int parseInstruction(char *line,SInst *inst) bindInst("gtz",0x13);bindInst("egz",0x14); bindInst("eqz",0x15);bindInst("nez",0x16); bindInst("jmp",0x21);bindInst("jez",0x22); - bindInst("jnz",0x23); + bindInst("jnz",0x23);bindInst("for",0x24); + bindInst("brk",0x25);bindInst("cont",0x26); #undef bindInst if(~r)inst->id=r;else return r=inst->id=0; char second[16],third[16]; @@ -227,13 +231,21 @@ int parseInstruction(char *line,SInst *inst) return parsePara(second,second+strlen(second),&inst->para1,1); case 0x21: sscanf(line,"%*s%s",second); - return parsePara(second,second+strlen(second),&inst->para1,2);//should be const int... + return parsePara(second,second+strlen(second),&inst->para1,8); case 0x22: case 0x23: + case 0x24: sscanf(line,"%*s%s%s",second,third); - return + bool ret= parsePara(second,second+strlen(second),&inst->para1,1)|| - parsePara(third,third+strlen(third),&inst->para2,2); + parsePara(third,third+strlen(third),&inst->para2,8); + if(r==0x24) + { + lppos[lops++]=inst->para2.data.i; + if(lppos[lops-1]>lppos[lops-2]) + error("intersecting loops?"); + } + return ret; } return 0; } @@ -250,9 +262,10 @@ void compile() for(unsigned i=0;i0&&lc==lppos[lops-1])--lops; if(line[0]=='.') { - if(infunc)error("error at line %d: no subroutine supported.",lc); + if(infunc)error("error at line %d: subroutine is not supported.",lc); infunc=1;result[lc].id=0xFF; result[lc].para1.type=8; result[lc].para1.fnc=(char*)calloc(16,sizeof(char)); @@ -264,6 +277,9 @@ void compile() infunc=0;result[lc].id=0xFE; }else if(parseInstruction(line,&result[lc]))error("error at line %d.",lc); + if(result[lc].id==0x25||result[lc].id==0x26) + if(!lops)error("%s is only allowed to be used within a loop.", + result[lc].id==0x25?"brk":"cont"); if(!infunc&&result[lc].id&&result[lc].id<0xFE)error("error at line %d:\ no instrunctions except nops are allowed out of a function.",lc); } @@ -281,16 +297,16 @@ void writePara(SPara a) c[i]=d&und;c[i]>>=shft; und<<=8LL;shft+=8LL; } - fprintf(stderr,"writtend lld: %lld=0x%llx\n0x",d,d); - for(int i=startbit;i<8;++i)fprintf(stderr,"%llx",c[i]); - fprintf(stderr,"\n"); + //fprintf(stderr,"writtend lld: %lld=0x%llx\n0x",d,d); + //for(int i=startbit;i<8;++i)fprintf(stderr,"%llx",c[i]); + //fprintf(stderr,"\n"); for(int i=startbit;i<8;++i)fputc((int)c[i],stdout); } void writeResult() { for(int i=1;i<=lc;++i) { - fprintf(stderr,"InstID=0x%X\n",result[i].id); + //fprintf(stderr,"InstID=0x%X\n",result[i].id); switch(result[i].id) { case 0xFF: case 0x02: @@ -299,6 +315,7 @@ void writeResult() fputs(result[i].para1.fnc,stdout); break; case 0x00: case 0x0F: case 0xFE: + case 0x25: case 0x26: fputc(result[i].id,stdout); break; case 0x01: case 0x0C: case 0x0D: @@ -311,7 +328,7 @@ void writeResult() case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: case 0x08: case 0x09: case 0x0A: case 0x0B: - case 0x22: case 0x23: + case 0x22: case 0x23: case 0x24: fputc(result[i].id,stdout); writePara(result[i].para1); writePara(result[i].para2); @@ -319,25 +336,8 @@ void writeResult() } } } -int main(int argc,char** argv)//for test purpose... +int main(int argc,char** argv) { - /*char *test; - test=(char*)"1234"; - Udata d=parseNumber(test,test+strlen(test),0); - printf("%d %X %f\n",d.i,d.i,d.r); - test=(char*)"r12"; - SPara a; - printf("result=%d\n",parsePara(test,test+strlen(test),&a,0)); - printf("type=%d\n",a.type); - printf("data.i=%d\n",a.data.i); - printf("data.r=%f\n",a.data.r); - test=(char*)"call orz617274873"; - SInst itest; - puts("Instruction cache test..."); - printf("result=%d\n",CacheStatement(test,&itest)); - printf("id=%d\n",itest.id); - printPara(itest.para1); - printPara(itest.para2);*/ if(argc<3)return puts("Usage: lsrc "),0; freopen(argv[1],"r",stdin); compile(); -- cgit v1.2.3