/* * Copyright (C) 2012-2019 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; jit_uword_t thumb; jit_int32_t const_offset; jit_int32_t patch_offset; } undo; _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; 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 for (node = _jitc->head; node; node = node->next) { if (_jit->pc.uc >= _jitc->code.end) return (NULL); 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; undo.data = _jitc->consts.data; undo.thumb = _jitc->thumb; undo.const_offset = _jitc->consts.offset; undo.patch_offset = _jitc->patches.offset; 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; invalidate_consts(); _jitc->consts.data = undo.data; _jitc->thumb = undo.thumb; _jitc->consts.offset = undo.const_offset; _jitc->patches.offset = undo.patch_offset; 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; 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; }