aboutsummaryrefslogtreecommitdiff
path: root/tools/lsrc/lsrc.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'tools/lsrc/lsrc.cpp')
-rw-r--r--tools/lsrc/lsrc.cpp78
1 files changed, 39 insertions, 39 deletions
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 <cstdio>
#include <cstdlib>
#include <cstring>
@@ -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;i<strlen(line);++i)
if(line[i]==';'||line[i]==0x0A){line[i]='\0';}
++lc;
+ if(lops>0&&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 <input file> <output file>"),0;
freopen(argv[1],"r",stdin);
compile();
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-02 17:26:31 +0000