diff options
Diffstat (limited to 'utils/libmach/tobj.c')
| -rw-r--r-- | utils/libmach/tobj.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/utils/libmach/tobj.c b/utils/libmach/tobj.c deleted file mode 100644 index d18de434..00000000 --- a/utils/libmach/tobj.c +++ /dev/null @@ -1,133 +0,0 @@ -/* - * 5obj.c - identify and parse a arm object file - */ -#include <lib9.h> -#include <bio.h> -#include "5c/5.out.h" -#include "obj.h" - -typedef struct Addr Addr; -struct Addr -{ - char type; - char sym; - char name; -}; -static Addr addr(Biobuf*); -static char type2char(int); -static void skip(Biobuf*, int); - -int -_ist(char *s) -{ - return s[0] == ANAME /* ANAME */ - && s[1] == D_FILE /* type */ - && s[2] == 1 /* sym */ - && s[3] == '<'; /* name of file */ -} - -int -_readt(Biobuf *bp, Prog *p) -{ - int as, n; - Addr a; - - as = Bgetc(bp); /* as */ - if(as < 0) - return 0; - p->kind = aNone; - if(as == ANAME || as == ASIGNAME){ - if(as == ASIGNAME) - skip(bp, 4); /* signature */ - p->kind = aName; - p->type = type2char(Bgetc(bp)); /* type */ - p->sym = Bgetc(bp); /* sym */ - n = 0; - for(;;) { - as = Bgetc(bp); - if(as < 0) - return 0; - n++; - if(as == 0) - break; - } - p->id = malloc(n); - if(p->id == 0) - return 0; - Bseek(bp, -n, 1); - if(Bread(bp, p->id, n) != n) - return 0; - return 1; - } - if(as == ATEXT) - p->kind = aText; - else if(as == AGLOBL) - p->kind = aData; - skip(bp, 6); /* scond(1), reg(1), lineno(4) */ - a = addr(bp); - addr(bp); - if(a.type != D_OREG || a.name != D_STATIC && a.name != D_EXTERN) - p->kind = aNone; - p->sym = a.sym; - return 1; -} - -static Addr -addr(Biobuf *bp) -{ - Addr a; - long off; - - a.type = Bgetc(bp); /* a.type */ - skip(bp,1); /* reg */ - a.sym = Bgetc(bp); /* sym index */ - a.name = Bgetc(bp); /* sym type */ - switch(a.type){ - default: - case D_NONE: - case D_REG: - case D_FREG: - case D_PSR: - case D_FPCR: - break; - case D_OREG: - case D_CONST: - case D_BRANCH: - case D_SHIFT: - off = Bgetc(bp); - off |= Bgetc(bp) << 8; - off |= Bgetc(bp) << 16; - off |= Bgetc(bp) << 24; - if(off < 0) - off = -off; - if(a.sym && (a.name==D_PARAM || a.name==D_AUTO)) - _offset(a.sym, off); - break; - case D_SCONST: - skip(bp, NSNAME); - break; - case D_FCONST: - skip(bp, 8); - break; - } - return a; -} - -static char -type2char(int t) -{ - switch(t){ - case D_EXTERN: return 'U'; - case D_STATIC: return 'b'; - case D_AUTO: return 'a'; - case D_PARAM: return 'p'; - default: return UNKNOWN; - } -} - -static void -skip(Biobuf *bp, int n) -{ - while (n-- > 0) - Bgetc(bp); -} |
