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pub const FILE = @import("std").c.FILE;
pub const bits = u64;
pub const Target = extern struct {
name: [16:0]u8,
apple: u8,
/// First general-purpose register.
gpr0: c_int,
ngpr: c_int,
/// First floating-point register.
fpr0: c_int,
nfpr: c_int,
/// Globally live registers, e.g. sp, fp.
rglob: bits,
nrglob: c_int,
/// Caller-save.
rsave: [*c]c_int,
nrsave: [2]c_int,
retregs: *const fn (Ref, [*c]c_int) callconv(.C) bits,
argregs: *const fn (Ref, [*c]c_int) callconv(.C) bits,
memargs: *const fn (c_int) callconv(.C) c_int,
abi0: *const fn (?*Fn) callconv(.C) void,
abi1: *const fn (?*Fn) callconv(.C) void,
isel: *const fn (?*Fn) callconv(.C) void,
emitfn: *const fn (?*Fn, *FILE) callconv(.C) void,
emitfin: *const fn (*FILE) callconv(.C) void,
asloc: [4]u8,
assym: [4]u8,
};
pub const BSet = extern struct {
nt: c_uint,
t: [*c]bits,
};
pub const Ref = extern struct {
// type: u3,
// val: u29,
ref: u32,
};
pub const Ins = extern struct {
// op: u30,
// cls: u2,
op: u32,
to: Ref,
arg: [2]Ref,
};
pub const Phi = extern struct {
to: Ref,
arg: ?*Ref,
blk: [*c]?*Blk,
narg: c_uint,
cls: c_int,
link: ?*Phi,
};
pub const Blk = extern struct {
phi: ?*Phi,
ins: ?*Ins,
nins: c_uint,
jmp: extern struct {
type: c_short,
arg: Ref,
},
s1: ?*Blk,
s2: ?*Blk,
link: ?*Blk,
id: c_uint,
visit: c_uint,
idom: ?*Blk,
dom: ?*Blk,
dlink: ?*Blk,
fron: [*c]?*Blk,
nfron: c_uint,
pred: [*c]?*Blk,
npred: c_uint,
in: [1]BSet,
out: [1]BSet,
gen: [1]BSet,
nlive: [2]c_int,
loop: c_int,
name: [80]u8,
};
pub const Use = extern struct {
type: enum(c_uint) { UXXX, UPhi, UIns, UJmp },
bid: c_uint,
u: extern union {
ins: ?*Ins,
phi: ?*Phi,
},
};
pub const Sym = extern struct {
type: enum (c_uint) { SGlo, SThr },
id: u32,
};
pub const Alias = extern struct {
type: enum (c_uint) {
ABot = 0,
ALoc = 1, // stack local
ACon = 2,
AEsc = 3, // stack escaping
ASym = 4,
AUnk = 6,
},
base: c_int,
offset: i64,
u: extern union {
sym: Sym,
loc: extern struct {
sz: c_int,
m: bits,
},
},
slot: [*c]Alias,
};
pub const Tmp = extern struct {
name: [80]u8,
def: ?*Ins,
use: [*c]Use,
ndef: c_uint,
nuse: c_uint,
bid: c_uint,
cost: c_uint,
slot: c_int,
cls: c_short,
hint: extern struct {
r: c_int,
w: c_int,
m: bits,
},
phi: c_int,
alias: Alias,
width: c_uint,
visit: c_int,
};
pub const Con = extern struct {
type: enum (c_uint) { CUndef, CBits, CAddr },
sym: Sym,
bits: extern union {
i: i64,
d: f64,
s: f32,
},
flt: u8,
};
pub const Addr = extern struct {
offset: Con,
base: Ref,
index: Ref,
scale: c_int,
};
pub const Mem = Addr;
pub const Lnk = extern struct {
@"export": u8,
thread: u8,
@"align": u8,
sec: [*c]u8,
secf: [*c]u8,
};
pub const Fn = extern struct {
start: ?*Blk,
tmp: [*c]Tmp,
con: [*c]Con,
mem: ?*Mem,
ntmp: c_int,
ncon: c_int,
nmem: c_int,
nblk: c_uint,
retty: c_int,
retr: Ref,
rpo: [*c]?*Blk,
reg: bits,
slot: c_int,
vararg: u8,
dynalloc: u8,
name: [80]u8,
lnk: Lnk,
};
pub const Dat = extern struct {
type: enum(c_uint) { DStart, DEnd, DB, DH, DW, DL, DZ },
name: [*:0]u8,
lnk: [*c]Lnk,
u: extern union {
num: i64,
fltd: f64,
flts: f32,
str: [*c]u8,
ref: extern struct {
name: [*:0]u8,
off: i64,
},
},
isref: u8,
isstr: u8,
};
pub extern const T_arm64_apple: Target;
pub extern const T_amd64_apple: Target;
pub extern const T_arm64: Target;
pub extern const T_rv64: Target;
pub extern const T_amd64_sysv: Target;
pub export const targets = [_]*Target{
&T_amd64_sysv,
&T_amd64_apple,
&T_arm64,
&T_arm64_apple,
&T_rv64,
};
pub export var T: Target = undefined;
pub export var debug = [_]bool{ false } ** ('Z' + 1);
// util.c
pub extern fn freeall() void;
// parse.c
pub extern fn parse(in: *FILE, path: [*:0]const u8, out: *FILE,
*const fn (*Dat, *FILE) callconv(.C) void,
*const fn (*Fn, *FILE) callconv(.C) void) void;
pub extern fn printfn(fun: *Fn, out: *FILE) void;
// cfg.c
pub extern fn fillpreds(fun: *Fn) void;
pub extern fn fillrpo(fun: *Fn) void;
pub extern fn fillloop(fun: *Fn) void;
pub extern fn simpljmp(fun: *Fn) void;
// mem.c
pub extern fn promote(fun: *Fn) void;
pub extern fn coalesce(fun: *Fn) void;
// alias.c
pub extern fn fillalias(fun: *Fn) void;
// load.c
pub extern fn loadopt(fun: *Fn) void;
// ssa.c
pub extern fn filluse(fun: *Fn) void;
pub extern fn ssa(fun: *Fn) void;
pub extern fn ssacheck(fun: *Fn) void;
// copy.c
pub extern fn copy(fun: *Fn) void;
// fold.c
pub extern fn fold(fun: *Fn) void;
// simpl.c
pub extern fn simpl(fun: *Fn) void;
// live.c
pub extern fn filllive(fun: *Fn) void;
// spill.c
pub extern fn fillcost(fun: *Fn) void;
pub extern fn spill(fun: *Fn) void;
// rega.c
pub extern fn rega(fun: *Fn) void;
// emit.c
pub extern fn emitdat(dat: *Dat, out: *FILE) void;
pub extern fn emitdbgfile(fun: [*:0]const u8, out: *FILE) void;
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