Hojun-Cho
1657bdeda3
C bootstrap (phases 0-9):
cmd/wwc, cmd/6c, cmd/6a, cmd/6l, cmd/ww, rt, lib/*.
ww-side self-host (phase 10):
selfhost/cmd/wwc — ww-cgen frontend; bootstrap fixed point.
selfhost/cmd/6a — assembler; byte-identical to C 6a (test 991).
selfhost/cmd/6l — linker w/ archive (.a) support; byte-identical
to C 6l (test 992).
selfhost/cmd/ww — driver (build/run/version); byte-identical to
C ww (test 993).
make test: 15/15. make bootstrap: ww2.s == ww3.s, ww2.o == ww3.o,
ww2 == ww3 byte-identical, with the full ww-tooled chain.
75 lines
1.4 KiB
C
75 lines
1.4 KiB
C
/*
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* l.h — 6l-private header. Loads relocatable ELF64 .o files (the
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* format produced by 6a) and links them into a static executable.
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*
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* No archives yet (phase 8). No dynamic linking ever.
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*/
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#ifndef SIX_L_H
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#define SIX_L_H
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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typedef int8_t i8;
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typedef int16_t i16;
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typedef int32_t i32;
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typedef int64_t i64;
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typedef uint8_t u8;
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typedef uint16_t u16;
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typedef uint32_t u32;
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typedef uint64_t u64;
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typedef struct Lsym Lsym;
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typedef struct Lrel Lrel;
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typedef struct Lobj Lobj;
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typedef struct Lnk Lnk;
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struct Lsym {
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const char *name;
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u64 val; /* offset within combined .text once linked */
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int defined; /* 1 if a Lobj defines this symbol */
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Lobj *owner;
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int idx_in_owner;
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Lsym *next;
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};
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struct Lrel {
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u64 off; /* offset within combined .text */
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int kind; /* R_X86_64_* */
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Lsym *sym;
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i64 addend;
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Lrel *next;
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};
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struct Lobj {
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const char *path;
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u8 *buf; /* mmapped or read-in object bytes */
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u64 len;
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u64 text_off; /* offset of .text in combined output */
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u64 text_size;
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Lobj *next;
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};
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struct Lnk {
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Lobj *objs;
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Lsym *syms;
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Lrel *rels;
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u8 *text; /* combined .text */
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u64 textcap, textlen;
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int errs;
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};
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/* obj.c */
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int l_load(Lnk*, const char *path);
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/* sym.c */
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Lsym *l_intern(Lnk*, const char *name);
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Lsym *l_lookup(Lnk*, const char *name);
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/* pass.c */
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int l_resolve(Lnk*);
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int l_relocate(Lnk*, u64 base);
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/* out.c */
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int l_emit_elf(Lnk*, FILE *out, u64 base, u64 entry);
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#endif
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