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527f2f9057
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
143 lines
2.9 KiB
C
143 lines
2.9 KiB
C
#if 0
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#include <u.h>
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#include <libc.h>
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#include <bio.h>
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#include "elf.h"
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#endif
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#include "dwarf.h"
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#include "pe.h"
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void printrules(Dwarf *d, ulong pc);
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//int exprfmt(Fmt*);
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void
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usage(void)
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{
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fprint(2, "usage: dwarfdump file\n");
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exits("usage");
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}
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void
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main(int argc, char **argv)
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{
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int c;
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Pe *pe;
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Dwarf *d;
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DwarfSym s;
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char *cdir, *dir, *file;
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ulong line, mtime, length;
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if(argc != 2)
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usage();
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#if 0
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fmtinstall('R', exprfmt);
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fmtinstall('H', encodefmt);
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#endif
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if((pe = peopen(argv[1])) == nil)
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sysfatal("elfopen %s: %r", argv[1]);
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if((d=dwarfopen(pe)) == nil)
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sysfatal("dwarfopen: %r");
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if(dwarfenum(d, &s) < 0)
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sysfatal("dwarfenumall: %r");
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while(dwarfnextsym(d, &s) == 1){
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switch(s.attrs.tag){
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case TagCompileUnit:
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print("compileunit %s\n", s.attrs.name);
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break;
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case TagSubprogram:
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c = 't';
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goto sym;
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case TagVariable:
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c = 'd';
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goto sym;
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case TagConstant:
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c = 'c';
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goto sym;
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case TagFormalParameter:
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if(!s.attrs.name)
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break;
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c = 'p';
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sym:
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if(s.attrs.isexternal)
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c += 'A' - 'a';
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print("%c %s", c, s.attrs.name);
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if(s.attrs.have.lowpc)
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print(" 0x%lux-0x%lux", s.attrs.lowpc, s.attrs.highpc);
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switch(s.attrs.have.location){
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case TBlock:
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print(" @ %.*H", s.attrs.location.b.len, s.attrs.location.b.data);
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break;
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case TConstant:
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print(" @ 0x%lux", s.attrs.location.c);
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break;
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}
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if(s.attrs.have.ranges)
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print(" ranges@0x%lux", s.attrs.ranges);
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print("\n");
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if(s.attrs.have.lowpc){
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if(dwarfpctoline(d, s.attrs.lowpc, &cdir, &dir, &file, &line, &mtime, &length) < 0)
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print("\tcould not find source: %r\n");
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else if(dir == nil)
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print("\t%s/%s:%lud mtime=%lud length=%lud\n",
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cdir, file, line, mtime, length);
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else
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print("\t%s/%s/%s:%lud mtime=%lud length=%lud\n",
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cdir, dir, file, line, mtime, length);
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if(0) printrules(d, s.attrs.lowpc);
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if(0) printrules(d, (s.attrs.lowpc+s.attrs.highpc)/2);
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}
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break;
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}
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}
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exits(0);
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}
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void
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printrules(Dwarf *d, ulong pc)
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{
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int i;
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DwarfExpr r[10];
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DwarfExpr cfa, ra;
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if(dwarfunwind(d, pc, &cfa, &ra, r, nelem(r)) < 0)
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print("\tcannot unwind from pc 0x%lux: %r\n", pc);
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print("\tpc=0x%lux cfa=%R ra=%R", pc, &cfa, &ra);
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for(i=0; i<nelem(r); i++)
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if(r[i].type != RuleSame)
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print(" r%d=%R", i, &r[i]);
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print("\n");
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}
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#if 0
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int
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exprfmt(Fmt *fmt)
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{
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DwarfExpr *e;
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if((e = va_arg(fmt->args, DwarfExpr*)) == nil)
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return fmtstrcpy(fmt, "<nil>");
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switch(e->type){
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case RuleUndef:
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return fmtstrcpy(fmt, "undef");
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case RuleSame:
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return fmtstrcpy(fmt, "same");
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case RuleCfaOffset:
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return fmtprint(fmt, "%ld(cfa)", e->offset);
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case RuleRegister:
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return fmtprint(fmt, "r%ld", e->reg);
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case RuleRegOff:
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return fmtprint(fmt, "%ld(r%ld)", e->offset, e->reg);
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case RuleLocation:
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return fmtprint(fmt, "l.%.*H", e->loc.len, e->loc.data);
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default:
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return fmtprint(fmt, "?%d", e->type);
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}
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}
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#endif
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