28089ee035
encode printable characters litteraly, use D() macro to reduce DATA instruction overhead. this halves the time spend assembling $CONF.root.s for the kernel build.
51 lines
1 KiB
C
51 lines
1 KiB
C
#include <u.h>
|
|
#include <libc.h>
|
|
#include <bio.h>
|
|
|
|
void
|
|
main(int argc, char *argv[])
|
|
{
|
|
Biobuf bin, bout;
|
|
long len, slen;
|
|
int c, x;
|
|
|
|
if(argc != 2){
|
|
fprint(2, "usage: data2s name\n");
|
|
exits("usage");
|
|
}
|
|
Binit(&bin, 0, OREAD);
|
|
Binit(&bout, 1, OWRITE);
|
|
Bprint(&bout, "#define D(o,s) DATA %scode+o(SB)/8, $s\n", argv[1]);
|
|
for(len=0; (c=Bgetc(&bin))!=Beof; len++){
|
|
if((len&7) == 0)
|
|
Bprint(&bout, "D(%ld,\"", len);
|
|
if(c>=0x20 && c<=0x7E){
|
|
if(c == '\\' || c == '"')
|
|
Bprint(&bout, "\\");
|
|
Bprint(&bout, "%c", c);
|
|
}else{
|
|
if((x=Bgetc(&bin))!=Beof)
|
|
Bungetc(&bin);
|
|
if(x>='0' && x<='7')
|
|
Bprint(&bout, "\\%.3uo", c);
|
|
else
|
|
Bprint(&bout, "\\%uo", c);
|
|
}
|
|
if((len&7) == 7)
|
|
Bprint(&bout, "\")\n");
|
|
}
|
|
slen = len;
|
|
if(len & 7){
|
|
while(len & 7){
|
|
Bprint(&bout, "\\z");
|
|
len++;
|
|
}
|
|
Bprint(&bout, "\")\n");
|
|
}
|
|
Bprint(&bout, "#undef D\n");
|
|
Bprint(&bout, "GLOBL %scode+0(SB), $%ld\n", argv[1], len);
|
|
Bprint(&bout, "GLOBL %slen+0(SB), $4\n", argv[1]);
|
|
Bprint(&bout, "DATA %slen+0(SB)/4, $%ld\n", argv[1], slen);
|
|
exits(0);
|
|
}
|