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guile/jit/jit_arm.c
Andy Wingo 796ec6c16d Rename include to jit.h, move all files to jit/
This change is in anticipation of making this lightning fork into an
include-only library.
2018-10-30 12:16:35 +01:00

2274 lines
58 KiB
C

/*
* Copyright (C) 2012-2017 Free Software Foundation, Inc.
*
* This file is part of GNU lightning.
*
* GNU lightning is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU lightning is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* Authors:
* Paulo Cesar Pereira de Andrade
*/
#if defined(__linux__)
# include <stdio.h>
#endif
#define jit_arg_reg_p(i) ((i) >= 0 && (i) < 4)
#define jit_arg_f_reg_p(i) ((i) >= 0 && (i) < 16)
#define jit_arg_d_reg_p(i) ((i) >= 0 && (i) < 15)
#define arm_patch_node 0x80000000
#define arm_patch_word 0x40000000
#define arm_patch_jump 0x20000000
#define arm_patch_load 0x00000000
#define jit_fpr_p(rn) ((rn) > 15)
#define arg_base() \
(stack_framesize - 16 + (jit_cpu.abi ? 64 : 0))
#define arg_offset(n) \
((n) < 4 ? arg_base() + ((n) << 2) : (n))
/* Assume functions called never match jit instruction set, that is
* libc, gmp, mpfr, etc functions are in thumb mode and jit is in
* arm mode, what may cause a crash upon return of that function
* if generating jit for a relative jump.
*/
#define jit_exchange_p() 1
/* FIXME is it really required to not touch _R10? */
/*
* Types
*/
typedef union _jit_thumb_t {
jit_int32_t i;
jit_int16_t s[2];
} jit_thumb_t;
typedef jit_pointer_t jit_va_list;
/*
* Prototypes
*/
#define jit_make_arg(node) _jit_make_arg(_jit,node)
static jit_node_t *_jit_make_arg(jit_state_t*,jit_node_t*);
#define jit_make_arg_f(node) _jit_make_arg_f(_jit,node)
static jit_node_t *_jit_make_arg_f(jit_state_t*,jit_node_t*);
#define jit_make_arg_d(node) _jit_make_arg_d(_jit,node)
static jit_node_t *_jit_make_arg_d(jit_state_t*,jit_node_t*);
#define jit_get_reg_pair() _jit_get_reg_pair(_jit)
static jit_int32_t _jit_get_reg_pair(jit_state_t*);
#define jit_unget_reg_pair(rn) _jit_unget_reg_pair(_jit,rn)
static void _jit_unget_reg_pair(jit_state_t*,jit_int32_t);
# define must_align_p(node) _must_align_p(_jit, node)
static jit_bool_t _must_align_p(jit_state_t*,jit_node_t*);
#define load_const(uniq,r0,i0) _load_const(_jit,uniq,r0,i0)
static void _load_const(jit_state_t*,jit_bool_t,jit_int32_t,jit_word_t);
#define flush_consts() _flush_consts(_jit)
static void _flush_consts(jit_state_t*);
#define invalidate_consts() _invalidate_consts(_jit)
static void _invalidate_consts(jit_state_t*);
#define patch(instr, node) _patch(_jit, instr, node)
static void _patch(jit_state_t*,jit_word_t,jit_node_t*);
#if defined(__GNUC__)
/* libgcc */
extern void __clear_cache(void *, void *);
#endif
#define PROTO 1
# include "jit_rewind.c"
# include "jit_arm-cpu.c"
# include "jit_arm-swf.c"
# include "jit_arm-vfp.c"
#undef PROTO
/*
* Initialization
*/
jit_cpu_t jit_cpu;
jit_register_t _rvs[] = {
{ rc(gpr) | 0x0c, "ip" },
{ rc(sav) | rc(gpr) | 0x04, "r4" },
{ rc(sav) | rc(gpr) | 0x05, "r5" },
{ rc(sav) | rc(gpr) | 0x06, "r6" },
{ rc(sav) | rc(gpr) | 0x07, "r7" },
{ rc(sav) | rc(gpr) | 0x08, "r8" },
{ rc(sav) | rc(gpr) | 0x09, "r9" },
{ rc(sav) | 0x0a, "sl" },
{ rc(sav) | 0x0b, "fp" },
{ rc(sav) | 0x0d, "sp" },
{ rc(sav) | 0x0e, "lr" },
{ 0x0f, "pc" },
{ rc(arg) | rc(gpr) | 0x03, "r3" },
{ rc(arg) | rc(gpr) | 0x02, "r2" },
{ rc(arg) | rc(gpr) | 0x01, "r1" },
{ rc(arg) | rc(gpr) | 0x00, "r0" },
{ rc(fpr) | 0x20, "d8" },
{ 0x21, "s17" },
{ rc(fpr) | 0x22, "d9" },
{ 0x23, "s19" },
{ rc(fpr) | 0x24, "d10" },
{ 0x25, "s21" },
{ rc(fpr) | 0x26, "d11" },
{ 0x27, "s23" },
{ rc(fpr) | 0x28, "d12" },
{ 0x29, "s25" },
{ rc(fpr) | 0x2a, "d13" },
{ 0x2b, "s27" },
{ rc(fpr) | 0x2c, "d14" },
{ 0x2d, "s29" },
{ rc(fpr) | 0x2e, "d15" },
{ 0x2f, "s31" },
{ rc(arg) | 0x1f, "s15" },
{ rc(arg)|rc(sft)|rc(fpr)|0x1e, "d7" },
{ rc(arg) | 0x1d, "s13" },
{ rc(arg)|rc(sft)|rc(fpr)|0x1c, "d6" },
{ rc(arg) | 0x1b, "s11" },
{ rc(arg)|rc(sft)|rc(fpr)|0x1a, "d5" },
{ rc(arg) | 0x19, "s9" },
{ rc(arg)|rc(sft)|rc(fpr)|0x18, "d4" },
{ rc(arg) | 0x17, "s7" },
{ rc(arg)|rc(sft)|rc(fpr)|0x16, "d3" },
{ rc(arg) | 0x15, "s5" },
{ rc(arg)|rc(sft)|rc(fpr)|0x14, "d2" },
{ rc(arg) | 0x13, "s3" },
{ rc(arg)|rc(sft)|rc(fpr)|0x12, "d1" },
{ rc(arg) | 0x11, "s1" },
{ rc(arg)|rc(sft)|rc(fpr)|0x10, "d0" },
{ _NOREG, "<none>" },
};
/*
* Implementation
*/
void
jit_get_cpu(void)
{
#if defined(__linux__)
FILE *fp;
char *ptr;
char buf[128];
if ((fp = fopen("/proc/cpuinfo", "r")) != NULL) {
while (fgets(buf, sizeof(buf), fp)) {
if (strncmp(buf, "CPU architecture:", 17) == 0) {
jit_cpu.version = strtol(buf + 17, &ptr, 10);
while (*ptr) {
if (*ptr == 'T' || *ptr == 't') {
++ptr;
jit_cpu.thumb = 1;
}
else if (*ptr == 'E' || *ptr == 'e') {
jit_cpu.extend = 1;
++ptr;
}
else
++ptr;
}
}
else if (strncmp(buf, "Features\t:", 10) == 0) {
if ((ptr = strstr(buf + 10, "vfpv")))
jit_cpu.vfp = strtol(ptr + 4, NULL, 0);
if ((ptr = strstr(buf + 10, "neon")))
jit_cpu.neon = 1;
if ((ptr = strstr(buf + 10, "thumb")))
jit_cpu.thumb = 1;
}
}
fclose(fp);
}
#endif
#if defined(__ARM_PCS_VFP)
if (!jit_cpu.vfp)
jit_cpu.vfp = 3;
if (!jit_cpu.version)
jit_cpu.version = 7;
jit_cpu.abi = 1;
#endif
#if defined(__thumb2__)
jit_cpu.thumb = 1;
#endif
/* armv6t2 todo (software float and thumb2) */
if (!jit_cpu.vfp && jit_cpu.thumb)
jit_cpu.thumb = 0;
}
void
_jit_init(jit_state_t *_jit)
{
jit_int32_t regno;
static jit_bool_t first = 1;
_jitc->reglen = jit_size(_rvs) - 1;
if (first) {
/* jit_get_cpu() should have been already called, and only once */
if (!jit_cpu.vfp) {
/* cause register to never be allocated, because simple
* software float only allocates stack space for 8 slots */
for (regno = _D8; regno < _D7; regno++)
_rvs[regno].spec = 0;
}
if (!jit_cpu.abi) {
for (regno = _S15; regno <= _D0; regno++)
_rvs[regno].spec &= ~rc(arg);
}
first = 0;
}
}
void
_jit_prolog(jit_state_t *_jit)
{
jit_int32_t offset;
if (_jitc->function)
jit_epilog();
assert(jit_regset_cmp_ui(&_jitc->regarg, 0) == 0);
jit_regset_set_ui(&_jitc->regsav, 0);
offset = _jitc->functions.offset;
if (offset >= _jitc->functions.length) {
jit_realloc((jit_pointer_t *)&_jitc->functions.ptr,
_jitc->functions.length * sizeof(jit_function_t),
(_jitc->functions.length + 16) * sizeof(jit_function_t));
_jitc->functions.length += 16;
}
_jitc->function = _jitc->functions.ptr + _jitc->functions.offset++;
_jitc->function->self.size = stack_framesize;
if (jit_cpu.abi)
_jitc->function->self.size += 64;
_jitc->function->self.argi = _jitc->function->self.argf =
_jitc->function->self.alen = 0;
if (jit_swf_p())
/* 8 soft float registers */
_jitc->function->self.aoff = -64;
else
_jitc->function->self.aoff = 0;
_jitc->function->self.call = jit_call_default;
jit_alloc((jit_pointer_t *)&_jitc->function->regoff,
_jitc->reglen * sizeof(jit_int32_t));
/* _no_link here does not mean the jit_link() call can be removed
* by rewriting as:
* _jitc->function->prolog = jit_new_node(jit_code_prolog);
*/
_jitc->function->prolog = jit_new_node_no_link(jit_code_prolog);
jit_link(_jitc->function->prolog);
_jitc->function->prolog->w.w = offset;
_jitc->function->epilog = jit_new_node_no_link(jit_code_epilog);
/* u: label value
* v: offset in blocks vector
* w: offset in functions vector
*/
_jitc->function->epilog->w.w = offset;
jit_regset_new(&_jitc->function->regset);
}
jit_int32_t
_jit_allocai(jit_state_t *_jit, jit_int32_t length)
{
assert(_jitc->function);
switch (length) {
case 0: case 1: break;
case 2: _jitc->function->self.aoff &= -2; break;
case 3: case 4: _jitc->function->self.aoff &= -4; break;
default: _jitc->function->self.aoff &= -8; break;
}
_jitc->function->self.aoff -= length;
if (!_jitc->realize) {
jit_inc_synth_ww(allocai, _jitc->function->self.aoff, length);
jit_dec_synth();
}
return (_jitc->function->self.aoff);
}
void
_jit_allocar(jit_state_t *_jit, jit_int32_t u, jit_int32_t v)
{
jit_int32_t reg;
assert(_jitc->function);
jit_inc_synth_ww(allocar, u, v);
if (!_jitc->function->allocar) {
_jitc->function->aoffoff = jit_allocai(sizeof(jit_int32_t));
_jitc->function->allocar = 1;
}
reg = jit_get_reg(jit_class_gpr);
jit_negr(reg, v);
jit_andi(reg, reg, -8);
jit_ldxi_i(u, JIT_FP, _jitc->function->aoffoff);
jit_addr(u, u, reg);
jit_addr(JIT_SP, JIT_SP, reg);
jit_stxi_i(_jitc->function->aoffoff, JIT_FP, u);
jit_unget_reg(reg);
jit_dec_synth();
}
void
_jit_ret(jit_state_t *_jit)
{
jit_node_t *instr;
assert(_jitc->function);
jit_inc_synth(ret);
/* jump to epilog */
instr = jit_jmpi();
jit_patch_at(instr, _jitc->function->epilog);
jit_dec_synth();
}
void
_jit_retr(jit_state_t *_jit, jit_int32_t u)
{
jit_inc_synth_w(retr, u);
if (JIT_RET != u)
jit_movr(JIT_RET, u);
jit_live(JIT_RET);
jit_ret();
jit_dec_synth();
}
void
_jit_reti(jit_state_t *_jit, jit_word_t u)
{
jit_inc_synth_w(reti, u);
jit_movi(JIT_RET, u);
jit_ret();
jit_dec_synth();
}
void
_jit_retr_f(jit_state_t *_jit, jit_int32_t u)
{
jit_inc_synth_w(retr_f, u);
if (jit_cpu.abi) {
if (u != JIT_FRET)
jit_movr_f(JIT_FRET, u);
else
jit_live(JIT_FRET);
}
else {
if (u != JIT_RET)
jit_movr_f_w(JIT_RET, u);
else
jit_live(JIT_RET);
}
jit_ret();
jit_dec_synth();
}
void
_jit_reti_f(jit_state_t *_jit, jit_float32_t u)
{
jit_inc_synth_f(reti_f, u);
if (jit_cpu.abi)
jit_movi_f(JIT_FRET, u);
else
jit_movi_f_w(JIT_RET, u);
jit_ret();
jit_dec_synth();
}
void
_jit_retr_d(jit_state_t *_jit, jit_int32_t u)
{
jit_inc_synth_w(retr_d, u);
if (jit_cpu.abi) {
if (u != JIT_FRET)
jit_movr_d(JIT_FRET, u);
else
jit_live(JIT_FRET);
}
else {
if (u != JIT_RET)
jit_movr_d_ww(JIT_RET, _R1, u);
else
jit_live(JIT_RET);
}
jit_ret();
jit_dec_synth();
}
void
_jit_reti_d(jit_state_t *_jit, jit_float64_t u)
{
jit_inc_synth_d(reti_d, u);
if (jit_cpu.abi)
jit_movi_d(JIT_FRET, u);
else
jit_movi_d_ww(JIT_RET, _R1, u);
jit_ret();
jit_dec_synth();
}
void
_jit_epilog(jit_state_t *_jit)
{
assert(_jitc->function);
assert(_jitc->function->epilog->next == NULL);
jit_link(_jitc->function->epilog);
_jitc->function = NULL;
}
jit_bool_t
_jit_arg_register_p(jit_state_t *_jit, jit_node_t *u)
{
if (u->code != jit_code_arg) {
if (u->code == jit_code_arg_f) {
if (jit_cpu.abi)
return (jit_arg_f_reg_p(u->u.w));
}
else {
assert(u->code == jit_code_arg_d);
if (jit_cpu.abi)
return (jit_arg_d_reg_p(u->u.w));
}
}
return (jit_arg_reg_p(u->u.w));
}
static jit_node_t *
_jit_make_arg(jit_state_t *_jit, jit_node_t *node)
{
jit_int32_t offset;
if (jit_arg_reg_p(_jitc->function->self.argi))
offset = _jitc->function->self.argi++;
else {
offset = _jitc->function->self.size;
_jitc->function->self.size += sizeof(jit_word_t);
}
if (node == (jit_node_t *)0)
node = jit_new_node(jit_code_arg);
else
link_node(node);
node->u.w = offset;
node->v.w = ++_jitc->function->self.argn;
jit_link_prolog();
return (node);
}
jit_node_t *
_jit_make_arg_f(jit_state_t *_jit, jit_node_t *node)
{
jit_int32_t offset;
if (jit_cpu.abi && !(_jitc->function->self.call & jit_call_varargs)) {
if (jit_arg_f_reg_p(_jitc->function->self.argf)) {
offset = _jitc->function->self.argf++;
goto done;
}
}
else {
if (jit_arg_reg_p(_jitc->function->self.argi)) {
offset = _jitc->function->self.argi++;
goto done;
}
}
offset = _jitc->function->self.size;
_jitc->function->self.size += sizeof(jit_float32_t);
done:
if (node == (jit_node_t *)0)
node = jit_new_node(jit_code_arg_f);
else
link_node(node);
node->u.w = offset;
node->v.w = ++_jitc->function->self.argn;
jit_link_prolog();
return (node);
}
jit_node_t *
_jit_make_arg_d(jit_state_t *_jit, jit_node_t *node)
{
jit_int32_t offset;
if (jit_cpu.abi && !(_jitc->function->self.call & jit_call_varargs)) {
if (jit_arg_d_reg_p(_jitc->function->self.argf)) {
if (_jitc->function->self.argf & 1)
++_jitc->function->self.argf;
offset = _jitc->function->self.argf;
_jitc->function->self.argf += 2;
goto done;
}
}
else {
if (_jitc->function->self.argi & 1)
++_jitc->function->self.argi;
if (jit_arg_reg_p(_jitc->function->self.argi)) {
offset = _jitc->function->self.argi;
_jitc->function->self.argi += 2;
goto done;
}
}
if (_jitc->function->self.size & 7)
_jitc->function->self.size += 4;
offset = _jitc->function->self.size;
_jitc->function->self.size += sizeof(jit_float64_t);
done:
if (node == (jit_node_t *)0)
node = jit_new_node(jit_code_arg_d);
else
link_node(node);
node->u.w = offset;
node->v.w = ++_jitc->function->self.argn;
jit_link_prolog();
return (node);
}
void
_jit_ellipsis(jit_state_t *_jit)
{
if (_jitc->prepare) {
assert(!(_jitc->function->call.call & jit_call_varargs));
_jitc->function->call.call |= jit_call_varargs;
if (jit_cpu.abi && _jitc->function->call.argf)
rewind_prepare();
}
else {
assert(!(_jitc->function->self.call & jit_call_varargs));
_jitc->function->self.call |= jit_call_varargs;
if (jit_cpu.abi && _jitc->function->self.argf)
rewind_prolog();
/* First 4 stack addresses are always spilled r0-r3 */
if (jit_arg_reg_p(_jitc->function->self.argi))
_jitc->function->vagp = _jitc->function->self.argi * 4;
else
_jitc->function->vagp = 16;
}
jit_inc_synth(ellipsis);
if (_jitc->prepare)
jit_link_prepare();
else
jit_link_prolog();
jit_dec_synth();
}
void
_jit_va_push(jit_state_t *_jit, jit_int32_t u)
{
jit_inc_synth_w(va_push, u);
jit_pushargr(u);
jit_dec_synth();
}
jit_node_t *
_jit_arg(jit_state_t *_jit)
{
assert(_jitc->function);
return (jit_make_arg((jit_node_t*)0));
}
jit_node_t *
_jit_arg_f(jit_state_t *_jit)
{
assert(_jitc->function);
return (jit_make_arg_f((jit_node_t*)0));
}
jit_node_t *
_jit_arg_d(jit_state_t *_jit)
{
assert(_jitc->function);
return (jit_make_arg_d((jit_node_t*)0));
}
void
_jit_getarg_c(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg);
jit_inc_synth_wp(getarg_c, u, v);
if (jit_swf_p())
jit_ldxi_c(u, JIT_FP, arg_offset(v->u.w));
else if (jit_arg_reg_p(v->u.w))
jit_extr_c(u, JIT_RA0 - v->u.w);
else
jit_ldxi_c(u, JIT_FP, v->u.w);
jit_dec_synth();
}
void
_jit_getarg_uc(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg);
jit_inc_synth_wp(getarg_uc, u, v);
if (jit_swf_p())
jit_ldxi_uc(u, JIT_FP, arg_offset(v->u.w));
else if (jit_arg_reg_p(v->u.w))
jit_extr_uc(u, JIT_RA0 - v->u.w);
else
jit_ldxi_uc(u, JIT_FP, v->u.w);
jit_dec_synth();
}
void
_jit_getarg_s(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg);
jit_inc_synth_wp(getarg_s, u, v);
if (jit_swf_p())
jit_ldxi_s(u, JIT_FP, arg_offset(v->u.w));
else if (jit_arg_reg_p(v->u.w))
jit_extr_s(u, JIT_RA0 - v->u.w);
else
jit_ldxi_s(u, JIT_FP, v->u.w);
jit_dec_synth();
}
void
_jit_getarg_us(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg);
jit_inc_synth_wp(getarg_us, u, v);
if (jit_swf_p())
jit_ldxi_us(u, JIT_FP, arg_offset(v->u.w));
else if (jit_arg_reg_p(v->u.w))
jit_extr_us(u, JIT_RA0 - v->u.w);
else
jit_ldxi_us(u, JIT_FP, v->u.w);
jit_dec_synth();
}
void
_jit_getarg_i(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg);
jit_inc_synth_wp(getarg_i, u, v);
if (jit_swf_p())
jit_ldxi_i(u, JIT_FP, arg_offset(v->u.w));
else if (jit_arg_reg_p(v->u.w))
jit_movr(u, JIT_RA0 - v->u.w);
else
jit_ldxi_i(u, JIT_FP, v->u.w);
jit_dec_synth();
}
void
_jit_putargr(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg);
jit_inc_synth_wp(putargr, u, v);
if (jit_swf_p())
jit_stxi(arg_offset(v->u.w), JIT_FP, u);
else if (jit_arg_reg_p(v->u.w))
jit_movr(JIT_RA0 - v->u.w, u);
else
jit_stxi(v->u.w, JIT_FP, u);
jit_dec_synth();
}
void
_jit_putargi(jit_state_t *_jit, jit_word_t u, jit_node_t *v)
{
jit_int32_t regno;
assert(v->code == jit_code_arg);
jit_inc_synth_wp(putargi, u, v);
if (jit_swf_p()) {
regno = jit_get_reg(jit_class_gpr);
jit_movi(regno, u);
jit_stxi(arg_offset(v->u.w), JIT_FP, regno);
jit_unget_reg(regno);
}
else if (jit_arg_reg_p(v->u.w))
jit_movi(JIT_RA0 - v->u.w, u);
else {
regno = jit_get_reg(jit_class_gpr);
jit_movi(regno, u);
jit_stxi(v->u.w, JIT_FP, regno);
jit_unget_reg(regno);
}
jit_dec_synth();
}
void
_jit_getarg_f(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg_f);
jit_inc_synth_wp(getarg_f, u, v);
if (jit_cpu.abi && !(_jitc->function->self.call & jit_call_varargs)) {
if (jit_arg_f_reg_p(v->u.w))
jit_movr_f(u, JIT_FA0 - v->u.w);
else
jit_ldxi_f(u, JIT_FP, v->u.w);
}
else if (jit_swf_p())
jit_ldxi_f(u, JIT_FP, arg_offset(v->u.w));
else {
if (jit_arg_reg_p(v->u.w))
jit_movr_w_f(u, JIT_RA0 - v->u.w);
else
jit_ldxi_f(u, JIT_FP, v->u.w);
}
jit_dec_synth();
}
void
_jit_putargr_f(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg_f);
jit_inc_synth_wp(putargr_f, u, v);
if (jit_cpu.abi) {
if (jit_arg_f_reg_p(v->u.w))
jit_movr_f(JIT_FA0 - v->u.w, u);
else
jit_stxi_f(v->u.w, JIT_FP, u);
}
else if (jit_swf_p())
jit_stxi_f(arg_offset(v->u.w), JIT_FP, u);
else {
if (jit_arg_reg_p(v->u.w))
jit_movr_f_w(JIT_RA0 - v->u.w, u);
else
jit_stxi_f(v->u.w, JIT_FP, u);
}
jit_dec_synth();
}
void
_jit_putargi_f(jit_state_t *_jit, jit_float32_t u, jit_node_t *v)
{
jit_int32_t regno;
assert(v->code == jit_code_arg_f);
jit_inc_synth_fp(putargi_f, u, v);
if (jit_cpu.abi) {
if (jit_arg_f_reg_p(v->u.w))
jit_movi_f(JIT_FA0 - v->u.w, u);
else {
regno = jit_get_reg(jit_class_fpr);
jit_movi_f(regno, u);
jit_stxi_f(v->u.w, JIT_FP, regno);
jit_unget_reg(regno);
}
}
else if (jit_swf_p()) {
regno = jit_get_reg(jit_class_fpr);
jit_movi_f(regno, u);
jit_stxi_f(arg_offset(v->u.w), JIT_FP, regno);
jit_unget_reg(regno);
}
else {
regno = jit_get_reg(jit_class_fpr);
jit_movi_f(regno, u);
if (jit_arg_reg_p(v->u.w))
jit_movr_f_w(JIT_RA0 - v->u.w, regno);
else
jit_stxi_f(v->u.w, JIT_FP, regno);
jit_unget_reg(regno);
}
jit_dec_synth();
}
void
_jit_getarg_d(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg_d);
jit_inc_synth_wp(getarg_d, u, v);
if (jit_cpu.abi && !(_jitc->function->self.call & jit_call_varargs)) {
if (jit_arg_f_reg_p(v->u.w))
jit_movr_d(u, JIT_FA0 - v->u.w);
else
jit_ldxi_d(u, JIT_FP, v->u.w);
}
else if (jit_swf_p())
jit_ldxi_d(u, JIT_FP, arg_offset(v->u.w));
else {
if (jit_arg_reg_p(v->u.w))
jit_movr_ww_d(u, JIT_RA0 - v->u.w, JIT_RA0 - (v->u.w + 1));
else
jit_ldxi_d(u, JIT_FP, v->u.w);
}
jit_dec_synth();
}
void
_jit_putargr_d(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
{
assert(v->code == jit_code_arg_d);
jit_inc_synth_wp(putargr_d, u, v);
if (jit_cpu.abi) {
if (jit_arg_f_reg_p(v->u.w))
jit_movr_d(JIT_FA0 - v->u.w, u);
else
jit_stxi_d(v->u.w, JIT_FP, u);
}
else if (jit_swf_p())
jit_stxi_d(arg_offset(v->u.w), JIT_FP, u);
else {
if (jit_arg_reg_p(v->u.w))
jit_movr_d_ww(JIT_RA0 - v->u.w, JIT_RA0 - (v->u.w + 1), u);
else
jit_stxi_d(v->u.w, JIT_FP, u);
}
jit_dec_synth();
}
void
_jit_putargi_d(jit_state_t *_jit, jit_float64_t u, jit_node_t *v)
{
jit_int32_t regno;
assert(v->code == jit_code_arg_d);
jit_inc_synth_dp(putargi_d, u, v);
if (jit_cpu.abi) {
if (jit_arg_f_reg_p(v->u.w))
jit_movi_d(JIT_FA0 - v->u.w, u);
else {
regno = jit_get_reg(jit_class_fpr);
jit_movi_d(regno, u);
jit_stxi_d(v->u.w, JIT_FP, regno);
jit_unget_reg(regno);
}
}
else if (jit_swf_p()) {
regno = jit_get_reg(jit_class_fpr);
jit_movi_d(regno, u);
jit_stxi_d(arg_offset(v->u.w), JIT_FP, regno);
jit_unget_reg(regno);
}
else {
regno = jit_get_reg(jit_class_fpr);
jit_movi_d(regno, u);
if (jit_arg_reg_p(v->u.w))
jit_movr_d_ww(JIT_RA0 - v->u.w, JIT_RA0 - (v->u.w + 1), regno);
else
jit_stxi_d(v->u.w, JIT_FP, regno);
jit_unget_reg(regno);
}
jit_dec_synth();
}
void
_jit_pushargr(jit_state_t *_jit, jit_int32_t u)
{
assert(_jitc->function);
jit_inc_synth_w(pushargr, u);
jit_link_prepare();
if (jit_arg_reg_p(_jitc->function->call.argi)) {
jit_movr(JIT_RA0 - _jitc->function->call.argi, u);
++_jitc->function->call.argi;
}
else {
jit_stxi(_jitc->function->call.size, JIT_SP, u);
_jitc->function->call.size += sizeof(jit_word_t);
}
jit_dec_synth();
}
void
_jit_pushargi(jit_state_t *_jit, jit_word_t u)
{
jit_int32_t regno;
assert(_jitc->function);
jit_inc_synth_w(pushargi, u);
jit_link_prepare();
if (jit_arg_reg_p(_jitc->function->call.argi)) {
jit_movi(JIT_RA0 - _jitc->function->call.argi, u);
++_jitc->function->call.argi;
}
else {
regno = jit_get_reg(jit_class_gpr);
jit_movi(regno, u);
jit_stxi(_jitc->function->call.size, JIT_SP, regno);
jit_unget_reg(regno);
_jitc->function->call.size += sizeof(jit_word_t);
}
jit_dec_synth();
}
void
_jit_pushargr_f(jit_state_t *_jit, jit_int32_t u)
{
assert(_jitc->function);
jit_inc_synth_w(pushargr_f, u);
jit_link_prepare();
if (jit_cpu.abi && !(_jitc->function->call.call & jit_call_varargs)) {
if (jit_arg_f_reg_p(_jitc->function->call.argf)) {
jit_movr_f(JIT_FA0 - _jitc->function->call.argf, u);
++_jitc->function->call.argf;
goto done;
}
}
else {
if (jit_arg_reg_p(_jitc->function->call.argi)) {
jit_movr_f_w(JIT_RA0 - _jitc->function->call.argi, u);
++_jitc->function->call.argi;
goto done;
}
}
jit_stxi_f(_jitc->function->call.size, JIT_SP, u);
_jitc->function->call.size += sizeof(jit_word_t);
done:
jit_dec_synth();
}
void
_jit_pushargi_f(jit_state_t *_jit, jit_float32_t u)
{
jit_int32_t regno;
assert(_jitc->function);
jit_inc_synth_f(pushargi_f, u);
jit_link_prepare();
if (jit_cpu.abi && !(_jitc->function->call.call & jit_call_varargs)) {
if (jit_arg_f_reg_p(_jitc->function->call.argf)) {
/* cannot jit_movi_f in the argument register because
* float arguments are packed, and that would cause
* either an assertion in debug mode, or overwritting
* two registers */
regno = jit_get_reg(jit_class_fpr);
jit_movi_f(regno, u);
jit_movr_f(JIT_FA0 - _jitc->function->call.argf, regno);
jit_unget_reg(regno);
++_jitc->function->call.argf;
goto done;
}
}
else {
if (jit_arg_reg_p(_jitc->function->call.argi)) {
jit_movi_f_w(JIT_RA0 - _jitc->function->call.argi, u);
++_jitc->function->call.argi;
goto done;
}
}
regno = jit_get_reg(jit_class_fpr);
jit_movi_f(regno, u);
jit_stxi_f(_jitc->function->call.size, JIT_SP, regno);
jit_unget_reg(regno);
_jitc->function->call.size += sizeof(jit_word_t);
done:
jit_dec_synth();
}
void
_jit_pushargr_d(jit_state_t *_jit, jit_int32_t u)
{
assert(_jitc->function);
jit_inc_synth_w(pushargr_d, u);
jit_link_prepare();
if (jit_cpu.abi && !(_jitc->function->call.call & jit_call_varargs)) {
if (jit_arg_d_reg_p(_jitc->function->call.argf)) {
if (_jitc->function->call.argf & 1)
++_jitc->function->call.argf;
jit_movr_d(JIT_FA0 - _jitc->function->call.argf, u);
_jitc->function->call.argf += 2;
goto done;
}
}
else {
if (_jitc->function->call.argi & 1)
++_jitc->function->call.argi;
if (jit_arg_reg_p(_jitc->function->call.argi)) {
jit_movr_d_ww(JIT_RA0 - _jitc->function->call.argi,
JIT_RA0 - (_jitc->function->call.argi + 1),
u);
_jitc->function->call.argi += 2;
goto done;
}
}
if (_jitc->function->call.size & 7)
_jitc->function->call.size += 4;
jit_stxi_d(_jitc->function->call.size, JIT_SP, u);
_jitc->function->call.size += sizeof(jit_float64_t);
done:
jit_dec_synth();
}
void
_jit_pushargi_d(jit_state_t *_jit, jit_float64_t u)
{
jit_int32_t regno;
assert(_jitc->function);
jit_inc_synth_d(pushargi_d, u);
jit_link_prepare();
if (jit_cpu.abi && !(_jitc->function->call.call & jit_call_varargs)) {
if (jit_arg_d_reg_p(_jitc->function->call.argf)) {
if (_jitc->function->call.argf & 1)
++_jitc->function->call.argf;
jit_movi_d(JIT_FA0 - _jitc->function->call.argf, u);
_jitc->function->call.argf += 2;
goto done;
}
}
else {
if (_jitc->function->call.argi & 1)
++_jitc->function->call.argi;
if (jit_arg_reg_p(_jitc->function->call.argi)) {
jit_movi_d_ww(JIT_RA0 - _jitc->function->call.argi,
JIT_RA0 - (_jitc->function->call.argi + 1),
u);
_jitc->function->call.argi += 2;
goto done;
}
}
if (_jitc->function->call.size & 7)
_jitc->function->call.size += 4;
regno = jit_get_reg(jit_class_fpr);
jit_movi_d(regno, u);
jit_stxi_d(_jitc->function->call.size, JIT_SP, regno);
jit_unget_reg(regno);
_jitc->function->call.size += sizeof(jit_float64_t);
done:
jit_dec_synth();
}
jit_bool_t
_jit_regarg_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
{
jit_int32_t spec;
spec = jit_class(_rvs[regno].spec);
if (spec & jit_class_arg) {
regno = JIT_RA0 - regno;
if (regno >= 0 && regno < node->v.w)
return (1);
if (jit_cpu.abi && spec & jit_class_fpr) {
regno = JIT_FA0 - regno;
if (regno >= 0 && regno < node->w.w)
return (1);
}
}
return (0);
}
void
_jit_finishr(jit_state_t *_jit, jit_int32_t r0)
{
jit_node_t *node;
assert(_jitc->function);
jit_inc_synth_w(finishr, r0);
if (_jitc->function->self.alen < _jitc->function->call.size)
_jitc->function->self.alen = _jitc->function->call.size;
node = jit_callr(r0);
node->v.w = _jitc->function->self.argi;
node->w.w = _jitc->function->call.argf;
_jitc->function->call.argi = _jitc->function->call.argf =
_jitc->function->call.size = 0;
_jitc->prepare = 0;
jit_dec_synth();
}
jit_node_t *
_jit_finishi(jit_state_t *_jit, jit_pointer_t i0)
{
jit_node_t *node;
assert(_jitc->function);
jit_inc_synth_w(finishi, (jit_word_t)i0);
if (_jitc->function->self.alen < _jitc->function->call.size)
_jitc->function->self.alen = _jitc->function->call.size;
node = jit_calli(i0);
node->v.w = _jitc->function->call.argi;
node->w.w = _jitc->function->call.argf;
_jitc->function->call.argi = _jitc->function->call.argf =
_jitc->function->call.size = 0;
_jitc->prepare = 0;
jit_dec_synth();
return (node);
}
void
_jit_retval_c(jit_state_t *_jit, jit_int32_t r0)
{
jit_inc_synth_w(retval_c, r0);
jit_extr_c(r0, JIT_RET);
jit_dec_synth();
}
void
_jit_retval_uc(jit_state_t *_jit, jit_int32_t r0)
{
jit_inc_synth_w(retval_uc, r0);
jit_extr_uc(r0, JIT_RET);
jit_dec_synth();
}
void
_jit_retval_s(jit_state_t *_jit, jit_int32_t r0)
{
jit_inc_synth_w(retval_s, r0);
jit_extr_s(r0, JIT_RET);
jit_dec_synth();
}
void
_jit_retval_us(jit_state_t *_jit, jit_int32_t r0)
{
jit_inc_synth_w(retval_us, r0);
jit_extr_us(r0, JIT_RET);
jit_dec_synth();
}
void
_jit_retval_i(jit_state_t *_jit, jit_int32_t r0)
{
jit_inc_synth_w(retval_i, r0);
if (r0 != JIT_RET)
jit_movr(r0, JIT_RET);
jit_dec_synth();
}
void
_jit_retval_f(jit_state_t *_jit, jit_int32_t r0)
{
jit_inc_synth_w(retval_f, r0);
if (jit_cpu.abi) {
if (r0 != JIT_FRET)
jit_movr_f(r0, JIT_FRET);
}
else if (r0 != JIT_RET)
jit_movr_w_f(r0, JIT_RET);
jit_dec_synth();
}
void
_jit_retval_d(jit_state_t *_jit, jit_int32_t r0)
{
jit_inc_synth_w(retval_d, r0);
if (jit_cpu.abi) {
if (r0 != JIT_FRET)
jit_movr_d(r0, JIT_FRET);
}
else if (r0 != JIT_RET)
jit_movr_ww_d(r0, JIT_RET, _R1);
jit_dec_synth();
}
jit_pointer_t
_emit_code(jit_state_t *_jit)
{
jit_node_t *node;
jit_node_t *temp;
jit_word_t word;
jit_int32_t value;
jit_int32_t offset;
struct {
jit_node_t *node;
jit_uint8_t *data;
jit_word_t word;
#if DEVEL_DISASSEMBLER
jit_word_t prevw;
#endif
jit_uword_t thumb;
#if DISASSEMBLER
jit_int32_t info_offset;
#endif
jit_int32_t const_offset;
jit_int32_t patch_offset;
} undo;
#if DEVEL_DISASSEMBLER
jit_word_t prevw;
#endif
_jitc->function = NULL;
_jitc->thumb = 0;
jit_reglive_setup();
_jitc->consts.data = NULL;
_jitc->consts.offset = _jitc->consts.length = 0;
undo.word = 0;
undo.node = NULL;
undo.data = NULL;
undo.thumb = 0;
#if DISASSEMBLER
undo.info_offset =
#endif
undo.const_offset = undo.patch_offset = 0;
# define assert_data(node) /**/
#define case_rr(name, type) \
case jit_code_##name##r##type: \
name##r##type(rn(node->u.w), rn(node->v.w)); \
break
#define case_rw(name, type) \
case jit_code_##name##i##type: \
name##i##type(rn(node->u.w), node->v.w); \
break
#define case_vv(name, type) \
case jit_code_##name##r##type: \
if (jit_swf_p()) \
swf_##name##r##type(rn(node->u.w), rn(node->v.w)); \
else \
vfp_##name##r##type(rn(node->u.w), rn(node->v.w)); \
break
#define case_vw(name, type) \
case jit_code_##name##i##type: \
if (jit_swf_p()) \
swf_##name##i##type(rn(node->u.w), node->v.w); \
else \
vfp_##name##i##type(rn(node->u.w), node->v.w); \
break
#define case_wr(name, type) \
case jit_code_##name##i##type: \
name##i##type(node->u.w, rn(node->v.w)); \
break
#define case_wv(name, type) \
case jit_code_##name##i##type: \
if (jit_swf_p()) \
swf_##name##i##type(node->u.w, rn(node->v.w)); \
else \
vfp_##name##i##type(node->u.w, rn(node->v.w)); \
break
#define case_rrr(name, type) \
case jit_code_##name##r##type: \
name##r##type(rn(node->u.w), \
rn(node->v.w), rn(node->w.w)); \
break
#define case_rrrr(name, type) \
case jit_code_##name##r##type: \
name##r##type(rn(node->u.q.l), rn(node->u.q.h), \
rn(node->v.w), rn(node->w.w)); \
break
#define case_vvv(name, type) \
case jit_code_##name##r##type: \
if (jit_swf_p()) \
swf_##name##r##type(rn(node->u.w), \
rn(node->v.w), rn(node->w.w)); \
else \
vfp_##name##r##type(rn(node->u.w), \
rn(node->v.w), rn(node->w.w)); \
break
#define case_rrw(name, type) \
case jit_code_##name##i##type: \
name##i##type(rn(node->u.w), rn(node->v.w), node->w.w); \
break
#define case_rrrw(name, type) \
case jit_code_##name##i##type: \
name##i##type(rn(node->u.q.l), rn(node->u.q.h), \
rn(node->v.w), node->w.w); \
break
#define case_vvw(name, type) \
case jit_code_##name##i##type: \
if (jit_swf_p()) \
swf_##name##i##type(rn(node->u.w), \
rn(node->v.w), node->w.w); \
else \
vfp_##name##i##type(rn(node->u.w), \
rn(node->v.w), node->w.w); \
break
#define case_vvf(name) \
case jit_code_##name##i_f: \
assert_data(node); \
if (jit_swf_p()) \
swf_##name##i_f(rn(node->u.w), rn(node->v.w), \
node->w.f); \
else \
vfp_##name##i_f(rn(node->u.w), rn(node->v.w), \
node->w.f); \
break
#define case_vvd(name) \
case jit_code_##name##i_d: \
assert_data(node); \
if (jit_swf_p()) \
swf_##name##i_d(rn(node->u.w), rn(node->v.w), \
node->w.d); \
else \
vfp_##name##i_d(rn(node->u.w), rn(node->v.w), \
node->w.d); \
break
#define case_wrr(name, type) \
case jit_code_##name##i##type: \
name##i##type(node->u.w, rn(node->v.w), rn(node->w.w)); \
break
#define case_wvv(name, type) \
case jit_code_##name##i##type: \
if (jit_swf_p()) \
swf_##name##i##type(node->u.w, \
rn(node->v.w), rn(node->w.w)); \
else \
vfp_##name##i##type(node->u.w, \
rn(node->v.w), rn(node->w.w)); \
break
#define case_brr(name, type) \
case jit_code_##name##r##type: \
temp = node->u.n; \
assert(temp->code == jit_code_label || \
temp->code == jit_code_epilog); \
if (temp->flag & jit_flag_patch) \
name##r##type(temp->u.w, rn(node->v.w), \
rn(node->w.w)); \
else { \
word = name##r##type(_jit->pc.w, \
rn(node->v.w), rn(node->w.w)); \
patch(word, node); \
} \
break
#define case_bvv(name, type) \
case jit_code_##name##r##type: \
temp = node->u.n; \
assert(temp->code == jit_code_label || \
temp->code == jit_code_epilog); \
if (temp->flag & jit_flag_patch) { \
if (jit_swf_p()) \
swf_##name##r##type(temp->u.w, rn(node->v.w), \
rn(node->w.w)); \
else \
vfp_##name##r##type(temp->u.w, rn(node->v.w), \
rn(node->w.w)); \
} \
else { \
if (jit_swf_p()) \
word = swf_##name##r##type(_jit->pc.w, \
rn(node->v.w), \
rn(node->w.w)); \
else \
word = vfp_##name##r##type(_jit->pc.w, \
rn(node->v.w), \
rn(node->w.w)); \
patch(word, node); \
} \
break
#define case_brw(name, type) \
case jit_code_##name##i##type: \
temp = node->u.n; \
assert(temp->code == jit_code_label || \
temp->code == jit_code_epilog); \
if (temp->flag & jit_flag_patch) \
name##i##type(temp->u.w, \
rn(node->v.w), node->w.w); \
else { \
word = name##i##type(_jit->pc.w, \
rn(node->v.w), node->w.w); \
patch(word, node); \
} \
break;
#define case_bvf(name) \
case jit_code_##name##i_f: \
temp = node->u.n; \
assert(temp->code == jit_code_label || \
temp->code == jit_code_epilog); \
if (temp->flag & jit_flag_patch) { \
if (jit_swf_p()) \
swf_##name##i_f(temp->u.w, rn(node->v.w), \
node->w.f); \
else \
vfp_##name##i_f(temp->u.w, rn(node->v.w), \
node->w.f); \
} \
else { \
if (jit_swf_p()) \
word = swf_##name##i_f(_jit->pc.w, \
rn(node->v.w), \
node->w.f); \
else \
word = vfp_##name##i_f(_jit->pc.w, \
rn(node->v.w), \
node->w.f); \
patch(word, node); \
} \
break
#define case_bvd(name) \
case jit_code_##name##i_d: \
temp = node->u.n; \
assert(temp->code == jit_code_label || \
temp->code == jit_code_epilog); \
if (temp->flag & jit_flag_patch) { \
if (jit_swf_p()) \
swf_##name##i_d(temp->u.w, rn(node->v.w), \
node->w.d); \
else \
vfp_##name##i_d(temp->u.w, rn(node->v.w), \
node->w.d); \
} \
else { \
if (jit_swf_p()) \
word = swf_##name##i_d(_jit->pc.w, \
rn(node->v.w), \
node->w.d); \
else \
word = vfp_##name##i_d(_jit->pc.w, \
rn(node->v.w), \
node->w.d); \
patch(word, node); \
} \
break
#if DEVEL_DISASSEMBLER
prevw = _jit->pc.w;
#endif
for (node = _jitc->head; node; node = node->next) {
if (_jit->pc.uc >= _jitc->code.end)
return (NULL);
#if DEVEL_DISASSEMBLER
node->offset = (jit_uword_t)_jit->pc.w - (jit_uword_t)prevw;
prevw = _jit->pc.w;
#endif
value = jit_classify(node->code);
jit_regarg_set(node, value);
switch (node->code) {
case jit_code_align:
assert(!(node->u.w & (node->u.w - 1)) &&
node->u.w <= sizeof(jit_word_t));
if (node->u.w == sizeof(jit_word_t) &&
(word = _jit->pc.w & (sizeof(jit_word_t) - 1)))
nop(sizeof(jit_word_t) - word);
break;
case jit_code_note: case jit_code_name:
if (must_align_p(node->next))
nop(2);
node->u.w = _jit->pc.w;
break;
case jit_code_label:
if (must_align_p(node->next))
nop(2);
/* remember label is defined */
node->flag |= jit_flag_patch;
node->u.w = _jit->pc.w;
break;
case_rrr(add,);
case_rrw(add,);
case_rrr(addc,);
case_rrw(addc,);
case_rrr(addx,);
case_rrw(addx,);
case_rrr(sub,);
case_rrw(sub,);
case_rrr(subc,);
case_rrw(subc,);
case_rrr(subx,);
case_rrw(subx,);
case_rrw(rsb,);
case_rrr(mul,);
case_rrw(mul,);
case_rrrr(qmul,);
case_rrrw(qmul,);
case_rrrr(qmul, _u);
case_rrrw(qmul, _u);
case_rrr(div,);
case_rrw(div,);
case_rrr(div, _u);
case_rrw(div, _u);
case_rrrr(qdiv,);
case_rrrw(qdiv,);
case_rrrr(qdiv, _u);
case_rrrw(qdiv, _u);
case_rrr(rem,);
case_rrw(rem,);
case_rrr(rem, _u);
case_rrw(rem, _u);
case_rrr(lsh,);
case_rrw(lsh,);
case_rrr(rsh,);
case_rrw(rsh,);
case_rrr(rsh, _u);
case_rrw(rsh, _u);
case_rr(neg,);
case_rr(com,);
case_rrr(and,);
case_rrw(and,);
case_rrr(or,);
case_rrw(or,);
case_rrr(xor,);
case_rrw(xor,);
case_vv(trunc, _f_i);
case_vv(trunc, _d_i);
case_rr(ld, _c);
case_rw(ld, _c);
case_rr(ld, _uc);
case_rw(ld, _uc);
case_rr(ld, _s);
case_rw(ld, _s);
case_rr(ld, _us);
case_rw(ld, _us);
case_rr(ld, _i);
case_rw(ld, _i);
case_rrr(ldx, _c);
case_rrw(ldx, _c);
case_rrr(ldx, _uc);
case_rrw(ldx, _uc);
case_rrr(ldx, _s);
case_rrw(ldx, _s);
case_rrr(ldx, _us);
case_rrw(ldx, _us);
case_rrr(ldx, _i);
case_rrw(ldx, _i);
case_rr(st, _c);
case_wr(st, _c);
case_rr(st, _s);
case_wr(st, _s);
case_rr(st, _i);
case_wr(st, _i);
case_rrr(stx, _c);
case_wrr(stx, _c);
case_rrr(stx, _s);
case_wrr(stx, _s);
case_rrr(stx, _i);
case_wrr(stx, _i);
case_rr(hton, _us);
case_rr(hton, _ui);
case_rr(ext, _c);
case_rr(ext, _uc);
case_rr(ext, _s);
case_rr(ext, _us);
case_rr(mov,);
case jit_code_movi:
if (node->flag & jit_flag_node) {
temp = node->v.n;
if (temp->code == jit_code_data ||
(temp->code == jit_code_label &&
(temp->flag & jit_flag_patch)))
movi(rn(node->u.w), temp->u.w);
else {
assert(temp->code == jit_code_label ||
temp->code == jit_code_epilog);
word = movi_p(rn(node->u.w), temp->u.w);
patch(word, node);
}
}
else
movi(rn(node->u.w), node->v.w);
break;
case_rrr(lt,);
case_rrw(lt,);
case_rrr(lt, _u);
case_rrw(lt, _u);
case_rrr(le,);
case_rrw(le,);
case_rrr(le, _u);
case_rrw(le, _u);
case_rrr(eq,);
case_rrw(eq,);
case_rrr(ge,);
case_rrw(ge,);
case_rrr(ge, _u);
case_rrw(ge, _u);
case_rrr(gt,);
case_rrw(gt,);
case_rrr(gt, _u);
case_rrw(gt, _u);
case_rrr(ne,);
case_rrw(ne,);
case_brr(blt,);
case_brw(blt,);
case_brr(blt, _u);
case_brw(blt, _u);
case_brr(ble,);
case_brw(ble,);
case_brr(ble, _u);
case_brw(ble, _u);
case_brr(beq,);
case_brw(beq,);
case_brr(bge,);
case_brw(bge,);
case_brr(bge, _u);
case_brw(bge, _u);
case_brr(bgt,);
case_brw(bgt,);
case_brr(bgt, _u);
case_brw(bgt, _u);
case_brr(bne,);
case_brw(bne,);
case_brr(boadd,);
case_brw(boadd,);
case_brr(boadd, _u);
case_brw(boadd, _u);
case_brr(bxadd,);
case_brw(bxadd,);
case_brr(bxadd, _u);
case_brw(bxadd, _u);
case_brr(bosub,);
case_brw(bosub,);
case_brr(bosub, _u);
case_brw(bosub, _u);
case_brr(bxsub,);
case_brw(bxsub,);
case_brr(bxsub, _u);
case_brw(bxsub, _u);
case_brr(bms,);
case_brw(bms,);
case_brr(bmc,);
case_brw(bmc,);
case_vvv(add, _f);
case_vvf(add);
case_vvv(sub, _f);
case_vvf(sub);
case_vvf(rsb);
case_vvv(mul, _f);
case_vvf(mul);
case_vvv(div, _f);
case_vvf(div);
case_vv(abs, _f);
case_vv(neg, _f);
case_vv(sqrt, _f);
case_vv(ext, _f);
case_vv(ld, _f);
case_vw(ld, _f);
case_vvv(ldx, _f);
case_vvw(ldx, _f);
case_vv(st, _f);
case_wv(st, _f);
case_vvv(stx, _f);
case_wvv(stx, _f);
case_vv(mov, _f);
case jit_code_movi_f:
assert_data(node);
if (jit_swf_p())
swf_movi_f(rn(node->u.w), node->v.f);
else
vfp_movi_f(rn(node->u.w), node->v.f);
break;
case_vv(ext, _d_f);
case_vvv(lt, _f);
case_vvf(lt);
case_vvv(le, _f);
case_vvf(le);
case_vvv(eq, _f);
case_vvf(eq);
case_vvv(ge, _f);
case_vvf(ge);
case_vvv(gt, _f);
case_vvf(gt);
case_vvv(ne, _f);
case_vvf(ne);
case_vvv(unlt, _f);
case_vvf(unlt);
case_vvv(unle, _f);
case_vvf(unle);
case_vvv(uneq, _f);
case_vvf(uneq);
case_vvv(unge, _f);
case_vvf(unge);
case_vvv(ungt, _f);
case_vvf(ungt);
case_vvv(ltgt, _f);
case_vvf(ltgt);
case_vvv(ord, _f);
case_vvf(ord);
case_vvv(unord, _f);
case_vvf(unord);
case_bvv(blt, _f);
case_bvf(blt);
case_bvv(ble, _f);
case_bvf(ble);
case_bvv(beq, _f);
case_bvf(beq);
case_bvv(bge, _f);
case_bvf(bge);
case_bvv(bgt, _f);
case_bvf(bgt);
case_bvv(bne, _f);
case_bvf(bne);
case_bvv(bunlt, _f);
case_bvf(bunlt);
case_bvv(bunle, _f);
case_bvf(bunle);
case_bvv(buneq, _f);
case_bvf(buneq);
case_bvv(bunge, _f);
case_bvf(bunge);
case_bvv(bungt, _f);
case_bvf(bungt);
case_bvv(bltgt, _f);
case_bvf(bltgt);
case_bvv(bord, _f);
case_bvf(bord);
case_bvv(bunord, _f);
case_bvf(bunord);
case_vvv(add, _d);
case_vvd(add);
case_vvv(sub, _d);
case_vvd(sub);
case_vvd(rsb);
case_vvv(mul, _d);
case_vvd(mul);
case_vvv(div, _d);
case_vvd(div);
case_vv(abs, _d);
case_vv(neg, _d);
case_vv(sqrt, _d);
case_vv(ext, _d);
case_vv(ld, _d);
case_vw(ld, _d);
case_vvv(ldx, _d);
case_vvw(ldx, _d);
case_vv(st, _d);
case_wv(st, _d);
case_vvv(stx, _d);
case_wvv(stx, _d);
case_vv(mov, _d);
case jit_code_movi_d:
assert_data(node);
if (jit_swf_p())
swf_movi_d(rn(node->u.w), node->v.d);
else
vfp_movi_d(rn(node->u.w), node->v.d);
break;
case_vv(ext, _f_d);
case_vvv(lt, _d);
case_vvd(lt);
case_vvv(le, _d);
case_vvd(le);
case_vvv(eq, _d);
case_vvd(eq);
case_vvv(ge, _d);
case_vvd(ge);
case_vvv(gt, _d);
case_vvd(gt);
case_vvv(ne, _d);
case_vvd(ne);
case_vvv(unlt, _d);
case_vvd(unlt);
case_vvv(unle, _d);
case_vvd(unle);
case_vvv(uneq, _d);
case_vvd(uneq);
case_vvv(unge, _d);
case_vvd(unge);
case_vvv(ungt, _d);
case_vvd(ungt);
case_vvv(ltgt, _d);
case_vvd(ltgt);
case_vvv(ord, _d);
case_vvd(ord);
case_vvv(unord, _d);
case_vvd(unord);
case_bvv(blt, _d);
case_bvd(blt);
case_bvv(ble, _d);
case_bvd(ble);
case_bvv(beq, _d);
case_bvd(beq);
case_bvv(bge, _d);
case_bvd(bge);
case_bvv(bgt, _d);
case_bvd(bgt);
case_bvv(bne, _d);
case_bvd(bne);
case_bvv(bunlt, _d);
case_bvd(bunlt);
case_bvv(bunle, _d);
case_bvd(bunle);
case_bvv(buneq, _d);
case_bvd(buneq);
case_bvv(bunge, _d);
case_bvd(bunge);
case_bvv(bungt, _d);
case_bvd(bungt);
case_bvv(bltgt, _d);
case_bvd(bltgt);
case_bvv(bord, _d);
case_bvd(bord);
case_bvv(bunord, _d);
case_bvd(bunord);
case jit_code_jmpr:
jmpr(rn(node->u.w));
flush_consts();
break;
case jit_code_jmpi:
if (node->flag & jit_flag_node) {
temp = node->u.n;
assert(temp->code == jit_code_label ||
temp->code == jit_code_epilog);
if (temp->flag & jit_flag_patch)
jmpi(temp->u.w);
else {
word = jmpi_p(_jit->pc.w, 1);
patch(word, node);
}
}
else
jmpi(node->u.w);
flush_consts();
break;
case jit_code_callr:
callr(rn(node->u.w));
break;
case jit_code_calli:
if (node->flag & jit_flag_node) {
temp = node->u.n;
assert(temp->code == jit_code_label ||
temp->code == jit_code_epilog);
if (temp->flag & jit_flag_patch)
calli(temp->u.w);
else {
word = calli_p(_jit->pc.w);
patch(word, node);
}
}
else
calli(node->u.w);
break;
case jit_code_prolog:
_jitc->function = _jitc->functions.ptr + node->w.w;
undo.node = node;
undo.word = _jit->pc.w;
#if DEVEL_DISASSEMBLER
undo.prevw = prevw;
#endif
undo.data = _jitc->consts.data;
undo.thumb = _jitc->thumb;
undo.const_offset = _jitc->consts.offset;
undo.patch_offset = _jitc->patches.offset;
#if DISASSEMBLER
if (_jitc->data_info.ptr)
undo.info_offset = _jitc->data_info.offset;
#endif
restart_function:
_jitc->again = 0;
prolog(node);
break;
case jit_code_epilog:
assert(_jitc->function == _jitc->functions.ptr + node->w.w);
if (_jitc->again) {
for (temp = undo.node->next;
temp != node; temp = temp->next) {
if (temp->code == jit_code_label ||
temp->code == jit_code_epilog)
temp->flag &= ~jit_flag_patch;
}
temp->flag &= ~jit_flag_patch;
node = undo.node;
_jit->pc.w = undo.word;
#if DEVEL_DISASSEMBLER
prevw = undo.prevw;
#endif
invalidate_consts();
_jitc->consts.data = undo.data;
_jitc->thumb = undo.thumb;
_jitc->consts.offset = undo.const_offset;
_jitc->patches.offset = undo.patch_offset;
#if DISASSEMBLER
if (_jitc->data_info.ptr)
_jitc->data_info.offset = undo.info_offset;
#endif
goto restart_function;
}
/* remember label is defined */
node->flag |= jit_flag_patch;
node->u.w = _jit->pc.w;
epilog(node);
_jitc->function = NULL;
flush_consts();
break;
case jit_code_movr_w_f:
if (jit_swf_p())
swf_movr_f(rn(node->u.w), rn(node->v.w));
else
vfp_movr_f(rn(node->u.w), rn(node->v.w));
break;
case jit_code_movr_f_w:
if (jit_swf_p())
swf_movr_f(rn(node->u.w), rn(node->v.w));
else
vfp_movr_f(rn(node->u.w), rn(node->v.w));
break;
case jit_code_movi_f_w:
assert_data(node);
if (jit_swf_p())
swf_movi_f(rn(node->u.w), node->v.f);
else
vfp_movi_f(rn(node->u.w), node->v.f);
break;
case jit_code_movr_ww_d:
if (jit_swf_p())
swf_movr_d(rn(node->u.w), rn(node->v.w));
else
vfp_movr_d(rn(node->u.w), rn(node->v.w));
break;
case jit_code_movr_d_ww:
if (jit_swf_p())
swf_movr_d(rn(node->u.w), rn(node->w.w));
else
vfp_movr_d(rn(node->u.w), rn(node->w.w));
break;
case jit_code_movi_d_ww:
assert_data(node);
if (jit_swf_p())
swf_movi_d(rn(node->u.w), node->w.d);
else
vfp_movi_d(rn(node->u.w), node->w.d);
break;
case jit_code_va_start:
vastart(rn(node->u.w));
break;
case jit_code_va_arg:
vaarg(rn(node->u.w), rn(node->v.w));
break;
case jit_code_va_arg_d:
if (jit_swf_p())
swf_vaarg_d(rn(node->u.w), rn(node->v.w));
else
vfp_vaarg_d(rn(node->u.w), rn(node->v.w));
break;
case jit_code_live: case jit_code_ellipsis:
case jit_code_va_push:
case jit_code_allocai: case jit_code_allocar:
case jit_code_arg:
case jit_code_arg_f: case jit_code_arg_d:
case jit_code_va_end:
case jit_code_ret:
case jit_code_retr: case jit_code_reti:
case jit_code_retr_f: case jit_code_reti_f:
case jit_code_retr_d: case jit_code_reti_d:
case jit_code_getarg_c: case jit_code_getarg_uc:
case jit_code_getarg_s: case jit_code_getarg_us:
case jit_code_getarg_i:
case jit_code_getarg_f: case jit_code_getarg_d:
case jit_code_putargr: case jit_code_putargi:
case jit_code_putargr_f: case jit_code_putargi_f:
case jit_code_putargr_d: case jit_code_putargi_d:
case jit_code_pushargr: case jit_code_pushargi:
case jit_code_pushargr_f: case jit_code_pushargi_f:
case jit_code_pushargr_d: case jit_code_pushargi_d:
case jit_code_retval_c: case jit_code_retval_uc:
case jit_code_retval_s: case jit_code_retval_us:
case jit_code_retval_i:
case jit_code_retval_f: case jit_code_retval_d:
case jit_code_prepare:
case jit_code_finishr: case jit_code_finishi:
break;
default:
abort();
}
jit_regarg_clr(node, value);
assert(_jitc->regarg == 0 && _jitc->synth == 0);
/* update register live state */
jit_reglive(node);
if (_jitc->consts.length &&
(_jit->pc.uc - _jitc->consts.data >= 3968 ||
(jit_uword_t)_jit->pc.uc -
(jit_uword_t)_jitc->consts.patches[0] >= 3968)) {
/* longest sequence should be 64 bytes, but preventively
* do not let it go past 128 remaining bytes before a flush */
if (node->next &&
node->next->code != jit_code_jmpi &&
node->next->code != jit_code_jmpr &&
node->next->code != jit_code_epilog) {
/* insert a jump, flush constants and continue */
word = _jit->pc.w;
assert(!jit_thumb_p());
B(0);
flush_consts();
patch_at(arm_patch_jump, word, _jit->pc.w);
}
}
}
#undef case_bvd
#undef case_bvf
#undef case_brw
#undef case_bvv
#undef case_brr
#undef case_wvv
#undef case_wrr
#undef case_vvd
#undef case_vvf
#undef case_vvw
#undef case_rrw
#undef case_vvv
#undef case_rrr
#undef case_wv
#undef case_wr
#undef case_vw
#undef case_vv
#undef case_rw
#undef case_rr
flush_consts();
for (offset = 0; offset < _jitc->patches.offset; offset++) {
assert(_jitc->patches.ptr[offset].kind & arm_patch_node);
node = _jitc->patches.ptr[offset].node;
word = _jitc->patches.ptr[offset].inst;
if (!jit_thumb_p() &&
(node->code == jit_code_movi || node->code == jit_code_calli)) {
/* calculate where to patch word */
value = *(jit_int32_t *)word;
assert((value & 0x0f700000) == ARM_LDRI);
/* offset may become negative (-4) if last instruction
* before unconditional branch and data following
* FIXME can this cause issues in the preprocessor prefetch
* or something else? should not, as the constants are after
* an unconditional jump */
if (value & ARM_P) value = value & 0x00000fff;
else value = -(value & 0x00000fff);
word = word + 8 + value;
}
value = node->code == jit_code_movi ? node->v.n->u.w : node->u.n->u.w;
patch_at(_jitc->patches.ptr[offset].kind & ~arm_patch_node, word, value);
}
jit_flush(_jit->code.ptr, _jit->pc.uc);
return (_jit->code.ptr);
}
#define CODE 1
# include "jit_rewind.c"
# include "jit_arm-cpu.c"
# include "jit_arm-swf.c"
# include "jit_arm-vfp.c"
#undef CODE
void
jit_flush(void *fptr, void *tptr)
{
#if defined(__GNUC__)
jit_uword_t i, f, t, s;
s = sysconf(_SC_PAGE_SIZE);
f = (jit_uword_t)fptr & -s;
t = (((jit_uword_t)tptr) + s - 1) & -s;
for (i = f; i < t; i += s)
__clear_cache((void *)i, (void *)(i + s));
#endif
}
void
_emit_ldxi(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1, jit_word_t i0)
{
ldxi_i(rn(r0), rn(r1), i0);
}
void
_emit_stxi(jit_state_t *_jit, jit_word_t i0, jit_int32_t r0, jit_int32_t r1)
{
stxi_i(i0, rn(r0), rn(r1));
}
void
_emit_ldxi_d(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1, jit_word_t i0)
{
if (jit_swf_p())
swf_ldxi_d(rn(r0), rn(r1), i0);
else
vfp_ldxi_d(rn(r0), rn(r1), i0);
}
void
_emit_stxi_d(jit_state_t *_jit, jit_word_t i0, jit_int32_t r0, jit_int32_t r1)
{
if (jit_swf_p())
swf_stxi_d(i0, rn(r0), rn(r1));
else
vfp_stxi_d(i0, rn(r0), rn(r1));
}
static jit_int32_t
_jit_get_reg_pair(jit_state_t *_jit)
{
/* bypass jit_get_reg() with argument or'ed with jit_class_chk
* and try to find an consecutive, even free register pair, or
* return JIT_NOREG if fail, as the cost of spills is greater
* than splitting a double load/store in two operations. */
if (jit_reg_free_p(_R0) && jit_reg_free_p(_R1)) {
jit_regset_setbit(&_jitc->regarg, _R0);
jit_regset_setbit(&_jitc->regarg, _R1);
return (_R0);
}
if (jit_reg_free_p(_R2) && jit_reg_free_p(_R3)) {
jit_regset_setbit(&_jitc->regarg, _R2);
jit_regset_setbit(&_jitc->regarg, _R3);
return (_R2);
}
if (jit_reg_free_p(_R4) && jit_reg_free_p(_R5)) {
jit_regset_setbit(&_jitc->regarg, _R4);
jit_regset_setbit(&_jitc->regarg, _R5);
return (_R4);
}
if (jit_reg_free_p(_R6) && jit_reg_free_p(_R7)) {
jit_regset_setbit(&_jitc->regarg, _R6);
jit_regset_setbit(&_jitc->regarg, _R7);
return (_R6);
}
if (jit_reg_free_p(_R8) && jit_reg_free_p(_R9)) {
jit_regset_setbit(&_jitc->regarg, _R8);
jit_regset_setbit(&_jitc->regarg, _R9);
return (_R8);
}
return (JIT_NOREG);
}
static void
_jit_unget_reg_pair(jit_state_t *_jit, jit_int32_t reg)
{
jit_unget_reg(reg);
switch (reg) {
case _R0: jit_unget_reg(_R1); break;
case _R2: jit_unget_reg(_R3); break;
case _R4: jit_unget_reg(_R5); break;
case _R6: jit_unget_reg(_R7); break;
case _R8: jit_unget_reg(_R9); break;
default: abort();
}
}
/* A prolog must be aligned at mod 4 bytes boundary.
* This condition was not being required to be tested by
* accident previously, but with the jit_frame and jit_tramp
* code it is required */
static jit_bool_t
_must_align_p(jit_state_t *_jit, jit_node_t *node)
{
if (jit_thumb_p() && (_jit->pc.w & 3)) {
for (; node; node = node->next) {
switch (node->code) {
case jit_code_note:
case jit_code_name:
case jit_code_label:
break;
case jit_code_prolog:
return (1);
default:
return (0);
}
}
}
return (0);
}
static void
_load_const(jit_state_t *_jit, jit_bool_t uniq, jit_int32_t r0, jit_word_t i0)
{
jit_word_t w;
jit_word_t d;
jit_word_t base;
jit_int32_t *data;
jit_int32_t size;
jit_int32_t offset;
assert(!jit_thumb_p());
if (!uniq) {
/* use zero, a valid directly encoded immediate, to avoid the
* need of a bitmask to know what offsets will be patched, so
* that comparison will always fail for constants that cannot
* be encoded */
assert(i0 != 0);
/* Actually, code is (currently at least) not self modifying,
* so, any value reachable backwards is valid as a constant. */
/* FIXME a quickly updateable/mutable hash table could be
* better here, but most times only a few comparisons
* should be done
*/
/* search in previous constant pool */
if ((data = (jit_int32_t *)_jitc->consts.data)) {
w = (jit_word_t)data;
/* maximum backwards offset */
base = (_jit->pc.w + 8) - 4092;
if (base <= w)
/* can scan all possible available backward constants */
base = 0;
else
base = (base - w) >> 2;
size = _jitc->consts.size >> 2;
for (offset = size - 1; offset >= base; offset--) {
if (data[offset] == i0) {
w = (jit_word_t)(data + offset);
d = (_jit->pc.w + 8) - w;
LDRIN(r0, _R15_REGNO, d);
return;
}
}
}
}
else
assert(i0 == 0);
_jitc->consts.patches[_jitc->consts.offset++] = _jit->pc.w;
/* (probably) positive forward offset */
LDRI(r0, _R15_REGNO, 0);
if (!uniq) {
/* search already requested values */
for (offset = 0; offset < _jitc->consts.length; offset++) {
if (_jitc->consts.values[offset] == i0) {
_jitc->consts.patches[_jitc->consts.offset++] = offset;
return;
}
}
}
#if DEBUG
/* cannot run out of space because of limited range
* but assert anyway to catch logic errors */
assert(_jitc->consts.length < 1024);
assert(_jitc->consts.offset < 2048);
#endif
_jitc->consts.patches[_jitc->consts.offset++] = _jitc->consts.length;
_jitc->consts.values[_jitc->consts.length++] = i0;
}
static void
_flush_consts(jit_state_t *_jit)
{
jit_word_t word;
jit_int32_t offset;
/* if no forward constants */
if (!_jitc->consts.length)
return;
assert(!jit_thumb_p());
word = _jit->pc.w;
_jitc->consts.data = _jit->pc.uc;
_jitc->consts.size = _jitc->consts.length << 2;
/* FIXME check will not overrun, otherwise, need to reallocate
* code buffer and start over */
jit_memcpy(_jitc->consts.data, _jitc->consts.values, _jitc->consts.size);
_jit->pc.w += _jitc->consts.size;
#if DISASSEMBLER
if (_jitc->data_info.ptr) {
if (_jitc->data_info.offset >= _jitc->data_info.length) {
jit_realloc((jit_pointer_t *)&_jitc->data_info.ptr,
_jitc->data_info.length * sizeof(jit_data_info_t),
(_jitc->data_info.length + 1024) *
sizeof(jit_data_info_t));
_jitc->data_info.length += 1024;
}
_jitc->data_info.ptr[_jitc->data_info.offset].code = word;
_jitc->data_info.ptr[_jitc->data_info.offset].length = _jitc->consts.size;
++_jitc->data_info.offset;
}
#endif
for (offset = 0; offset < _jitc->consts.offset; offset += 2)
patch_at(arm_patch_load, _jitc->consts.patches[offset],
word + (_jitc->consts.patches[offset + 1] << 2));
_jitc->consts.length = _jitc->consts.offset = 0;
}
/* to be called if needing to start over a function */
static void
_invalidate_consts(jit_state_t *_jit)
{
/* if no forward constants */
if (_jitc->consts.length)
_jitc->consts.length = _jitc->consts.offset = 0;
}
static void
_patch(jit_state_t *_jit, jit_word_t instr, jit_node_t *node)
{
jit_int32_t flag;
jit_int32_t kind;
assert(node->flag & jit_flag_node);
if (node->code == jit_code_movi) {
flag = node->v.n->flag;
kind = arm_patch_word;
}
else {
flag = node->u.n->flag;
if (node->code == jit_code_calli ||
(node->code == jit_code_jmpi && !(node->flag & jit_flag_node)))
kind = arm_patch_word;
else
kind = arm_patch_jump;
}
assert(!(flag & jit_flag_patch));
kind |= arm_patch_node;
if (_jitc->patches.offset >= _jitc->patches.length) {
jit_realloc((jit_pointer_t *)&_jitc->patches.ptr,
_jitc->patches.length * sizeof(jit_patch_t),
(_jitc->patches.length + 1024) * sizeof(jit_patch_t));
_jitc->patches.length += 1024;
}
_jitc->patches.ptr[_jitc->patches.offset].kind = kind;
_jitc->patches.ptr[_jitc->patches.offset].inst = instr;
_jitc->patches.ptr[_jitc->patches.offset].node = node;
++_jitc->patches.offset;
}