Hojun-Cho
62b9d20383
selfhost/, cmd/, internal/ join the tree-wide sweep: every section banner dies (91 selfhost + the cmd C-style dividers -> 0); narration and stale contracts deleted (pre-#22 bundler notes, retired single-PT_LOAD and no-archive claims, superseded ABI tables); every ref/harec/qbe cite, task cite, encoding/ELF contract, and rule-10 twin pointer kept; lost lifetime/rationale lines restored where the sweep over-cut (elf_globals ownership, kwtab linear-scan). Comment- only proven: all five wwstage tool binaries byte-identical across the sweep; test-commit, test-byteid (161+1399, 0 pinned-divergent), and test-bootstrap (fixed point + 991-995 byte-id) all exit 0. The read-through banked 66 latent-bug leads (checkpoint).
81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/* Plan 9 cmd/6c/gc.h shape, trimmed. */
|
|
#ifndef SIX_GC_H
|
|
#define SIX_GC_H
|
|
|
|
#include "ww.h"
|
|
#include "6.out.h"
|
|
|
|
typedef struct Prog Prog;
|
|
typedef struct Adr Adr;
|
|
|
|
/* one operand: register, immediate, indirect, or symbolic. */
|
|
struct Adr {
|
|
int type; /* D_AX, D_CONST, D_INDIR, ... */
|
|
int reg; /* base register for D_INDIR */
|
|
long long offset; /* immediate value or memory displacement */
|
|
const char *sym; /* symbol name for D_EXTERN/D_BRANCH */
|
|
};
|
|
|
|
struct Prog {
|
|
int as; /* opcode (A_MOVQ, ...) */
|
|
Adr from; /* source operand */
|
|
Adr to; /* destination operand (Plan 9 order) */
|
|
int line;
|
|
const char *label; /* if non-NULL, this prog is preceded by label: */
|
|
Prog *link;
|
|
};
|
|
|
|
/* per-fn codegen state */
|
|
typedef struct Cg Cg;
|
|
struct Cg {
|
|
Arena *a;
|
|
Prog *head, *tail;
|
|
const char *fnname;
|
|
const char *cur_mod; /* current fn's `// MODULE: foo` directive,
|
|
* NULL when the fn lives in the primary
|
|
* file (no MODULE: stamp). Drives bare-IDENT
|
|
* call mangling — `frob()` from within
|
|
* lib/foo binds to `foo.frob` regardless
|
|
* of which other modules also export `frob`.
|
|
* Set by cgfn before walking the body. */
|
|
int framesize; /* bytes of locals; 16-byte aligned */
|
|
int curoff; /* current top of locals */
|
|
Scope *locals; /* (name → offset) tracked via Sym */
|
|
int labelseq;
|
|
int sep_mode; /* #22 M3 `-c`: separate-compile / primary-only
|
|
* codegen. Emit code+DATA ONLY for this
|
|
* package's own (imported==0) decls; treat every
|
|
* `.wwi`-sourced (imported==1) dep decl as an
|
|
* external — body-less fns already skip, value
|
|
* globals/defs are gated so they don't duplicate
|
|
* the dep's real definition (link collision).
|
|
* Off on the combined path (every existing
|
|
* invocation) so M3 is a pure addition. */
|
|
int sep_isdep; /* #99: this unit is a sep DEPENDENCY, not the
|
|
* root/link-entry unit. Set from `wwiout != NULL`
|
|
* in main: the producer passes -I (.wwi output)
|
|
* to DEP units only — the root's .wwi is stripped
|
|
* (#69), so wwiout==NULL <=> root/link-entry unit.
|
|
* Gates the bare-`main` carve-out: a dep's `fn
|
|
* main` must mangle on its path like any decl;
|
|
* only the root entry stays bare. */
|
|
};
|
|
|
|
/* cgen.c */
|
|
void cg_init(Cg*, Arena*);
|
|
void cg_file(Cg*, FILE *out, Node *file);
|
|
Prog *newprog(Cg*, int op);
|
|
void emit(Cg*, Prog*);
|
|
|
|
/* txt.c */
|
|
void txt_emit(FILE*, Prog *head);
|
|
|
|
/* wwi.c — non-zero return: check_exported_type rejected a dangling export. */
|
|
int wwi_emit(Checker *c, FILE *of, Node *file);
|
|
|
|
/* swt.c, peep.c, reg.c — placeholders for now */
|
|
void peephole(Cg*);
|
|
void regalloc_init(Cg*);
|
|
|
|
#endif
|