diff options
Diffstat (limited to 'upb/pb/compile_decoder_x64.h')
| -rw-r--r-- | upb/pb/compile_decoder_x64.h | 1732 |
1 files changed, 0 insertions, 1732 deletions
diff --git a/upb/pb/compile_decoder_x64.h b/upb/pb/compile_decoder_x64.h deleted file mode 100644 index 2c07063..0000000 --- a/upb/pb/compile_decoder_x64.h +++ /dev/null @@ -1,1732 +0,0 @@ -/* -** This file has been pre-processed with DynASM. -** http://luajit.org/dynasm.html -** DynASM version 1.3.0, DynASM x64 version 1.3.0 -** DO NOT EDIT! The original file is in "upb/pb/compile_decoder_x64.dasc". -*/ - -#if DASM_VERSION != 10300 -#error "Version mismatch between DynASM and included encoding engine" -#endif - -# 1 "upb/pb/compile_decoder_x64.dasc" -/*|// */ -/*|// upb - a minimalist implementation of protocol buffers. */ -/*|// */ -/*|// Copyright (c) 2011-2013 Google Inc. See LICENSE for details. */ -/*|// Author: Josh Haberman <jhaberman@gmail.com> */ -/*|// */ -/*|// JIT compiler for upb_pbdecoder on x86-64. Generates machine code from the */ -/*|// bytecode generated in compile_decoder.c. */ -/*| */ -/*|.arch x64 */ -/*|.actionlist upb_jit_actionlist */ -static const unsigned char upb_jit_actionlist[2467] = { - 249,255,248,10,248,1,85,65,87,65,86,65,85,65,84,83,72,137,252,243,73,137, - 252,255,72,184,237,237,65,84,73,137,228,72,129,228,239,252,255,208,76,137, - 228,65,92,133,192,15,137,244,247,73,137,167,233,72,137,216,77,139,183,233, - 73,139,159,233,77,139,167,233,77,139,174,233,73,139,174,233,73,43,175,233, - 73,3,175,233,73,139,151,233,72,133,210,15,133,244,248,252,255,208,73,139, - 135,233,73,199,135,233,0,0,0,0,248,1,255,91,65,92,65,93,65,94,65,95,93,195, - 248,2,73,139,183,233,72,41,212,72,137,231,72,184,237,237,65,84,73,137,228, - 72,129,228,239,252,255,208,76,137,228,65,92,195,255,248,11,73,139,191,233, - 72,137,230,73,139,151,233,72,41,226,73,137,151,233,137,195,72,184,237,237, - 65,84,73,137,228,72,129,228,239,252,255,208,76,137,228,65,92,137,216,73,139, - 167,233,91,65,92,65,93,65,94,65,95,93,195,255,248,12,73,57,159,233,15,132, - 244,247,73,137,159,233,248,1,77,137,183,233,73,137,159,233,77,137,167,233, - 73,137,175,233,73,43,175,233,73,3,175,233,73,137,174,233,77,137,174,233,76, - 137,252,255,72,184,237,237,65,84,73,137,228,72,129,228,239,252,255,208,76, - 137,228,65,92,252,233,244,11,255,248,13,248,1,77,137,174,233,73,137,159,233, - 255,76,57,227,15,132,244,253,255,76,137,225,72,41,217,72,131,252,249,1,15, - 130,244,253,255,15,182,19,132,210,15,137,244,254,248,7,232,244,14,248,8,72, - 131,195,1,72,137,252,233,72,41,217,72,41,209,15,130,244,250,73,137,142,233, - 77,59,183,233,15,132,244,249,73,129,198,239,72,137,221,72,1,213,65,199,134, - 233,0,0,0,0,72,133,201,15,132,244,248,77,139,167,233,72,57,252,235,15,135, - 244,248,76,57,229,15,135,244,248,255,73,137,252,236,248,2,195,248,3,73,139, - 159,233,76,137,252,255,255,72,190,237,237,255,190,237,255,49,252,246,255, - 72,184,237,237,65,84,73,137,228,72,129,228,239,252,255,208,76,137,228,65, - 92,232,244,12,252,233,244,1,248,4,73,139,159,233,76,137,252,255,255,72,184, - 237,237,65,84,73,137,228,72,129,228,239,252,255,208,76,137,228,65,92,232, - 244,12,252,233,244,1,255,248,15,76,137,252,255,137,214,15,182,209,77,137, - 183,233,73,137,159,233,77,137,167,233,73,137,175,233,73,43,175,233,73,3,175, - 233,73,137,174,233,77,137,174,233,72,184,237,237,65,84,73,137,228,72,129, - 228,239,252,255,208,76,137,228,65,92,77,139,183,233,73,139,159,233,77,139, - 167,233,77,139,174,233,73,139,174,233,73,43,175,233,73,3,175,233,129,252, - 248,239,255,15,133,244,247,195,248,1,129,252,248,239,15,132,244,247,232,244, - 11,248,1,49,192,195,255,248,16,248,17,72,131,252,236,8,248,1,72,199,4,36, - 0,0,0,0,76,137,252,255,72,137,230,73,137,159,233,77,137,183,233,73,137,159, - 233,77,137,167,233,73,137,175,233,73,43,175,233,73,3,175,233,73,137,174,233, - 77,137,174,233,72,184,237,237,65,84,73,137,228,72,129,228,239,252,255,208, - 76,137,228,65,92,77,139,183,233,73,139,159,233,77,139,167,233,77,139,174, - 233,73,139,174,233,255,73,43,175,233,73,3,175,233,133,192,15,137,244,248, - 72,139,20,36,252,242,15,16,4,36,72,131,196,8,72,131,252,235,4,73,137,159, - 233,195,248,2,232,244,11,252,233,244,1,255,248,18,248,19,72,131,252,236,8, - 248,1,72,199,4,36,0,0,0,0,76,137,252,255,72,137,230,73,137,159,233,77,137, - 183,233,73,137,159,233,77,137,167,233,73,137,175,233,73,43,175,233,73,3,175, - 233,73,137,174,233,77,137,174,233,72,184,237,237,65,84,73,137,228,72,129, - 228,239,252,255,208,76,137,228,65,92,77,139,183,233,73,139,159,233,77,139, - 167,233,77,139,174,233,73,139,174,233,255,73,43,175,233,73,3,175,233,133, - 192,15,137,244,248,72,139,20,36,252,242,15,16,4,36,72,131,196,8,72,131,252, - 235,8,73,137,159,233,195,248,2,232,244,11,252,233,244,1,255,248,20,248,21, - 255,76,57,227,15,132,244,247,255,76,137,225,72,41,217,72,131,252,249,16,15, - 130,244,247,255,252,243,15,111,3,102,15,215,192,252,247,208,15,188,192,60, - 10,15,131,244,22,72,1,195,195,248,1,72,141,139,233,72,137,216,76,57,225,73, - 15,71,204,248,2,72,57,200,15,132,244,22,252,246,0,128,15,132,244,249,72,131, - 192,1,252,233,244,2,248,3,72,137,195,195,255,248,23,72,131,252,236,16,248, - 1,72,57,252,235,15,133,244,248,72,131,196,16,49,192,195,248,2,76,137,252, - 255,72,137,230,77,137,183,233,73,137,159,233,77,137,167,233,73,137,175,233, - 73,43,175,233,73,3,175,233,73,137,174,233,77,137,174,233,72,184,237,237,65, - 84,73,137,228,72,129,228,239,252,255,208,76,137,228,65,92,77,139,183,233, - 73,139,159,233,77,139,167,233,77,139,174,233,255,73,139,174,233,73,43,175, - 233,73,3,175,233,131,252,248,0,15,141,244,249,139,20,36,72,131,196,16,195, - 248,3,232,244,11,252,233,244,1,255,248,14,248,24,255,76,57,227,15,132,244, - 22,255,76,137,225,72,41,217,72,131,252,249,10,15,130,244,22,255,72,137,223, - 72,184,237,237,65,84,73,137,228,72,129,228,239,252,255,208,76,137,228,65, - 92,72,133,192,15,132,244,22,72,137,195,72,131,252,235,1,73,137,159,233,195, - 255,248,22,72,131,252,236,8,248,1,72,199,4,36,0,0,0,0,76,137,252,255,72,137, - 230,73,137,159,233,77,137,183,233,73,137,159,233,77,137,167,233,73,137,175, - 233,73,43,175,233,73,3,175,233,73,137,174,233,77,137,174,233,72,184,237,237, - 65,84,73,137,228,72,129,228,239,252,255,208,76,137,228,65,92,77,139,183,233, - 73,139,159,233,77,139,167,233,77,139,174,233,73,139,174,233,73,43,175,233, - 255,73,3,175,233,133,192,15,137,244,248,72,139,20,36,252,242,15,16,4,36,72, - 131,196,8,72,131,252,235,1,73,137,159,233,195,248,2,232,244,11,252,233,244, - 1,255,248,25,72,131,252,236,8,72,137,52,36,248,1,76,137,252,255,77,137,183, - 233,73,137,159,233,77,137,167,233,73,137,175,233,73,43,175,233,73,3,175,233, - 73,137,174,233,77,137,174,233,73,137,159,233,72,184,237,237,65,84,73,137, - 228,72,129,228,239,252,255,208,76,137,228,65,92,77,139,183,233,73,139,159, - 233,77,139,167,233,77,139,174,233,73,139,174,233,73,43,175,233,255,73,3,175, - 233,131,252,248,0,15,141,244,248,72,131,196,8,195,248,2,232,244,11,72,139, - 52,36,72,57,252,235,15,133,244,1,184,237,72,131,196,8,195,255,248,26,81,82, - 72,131,252,236,16,72,137,252,247,72,137,214,72,137,226,72,184,237,237,65, - 84,73,137,228,72,129,228,239,252,255,208,76,137,228,65,92,72,131,196,16,90, - 89,132,192,15,132,244,248,72,139,68,36,224,195,248,2,72,49,192,72,252,247, - 208,195,255,76,57,227,15,133,244,249,255,76,137,225,72,41,217,72,129,252, - 249,239,15,131,244,249,255,248,2,255,232,244,14,255,232,244,24,255,232,244, - 17,255,232,244,19,255,252,233,244,250,255,248,3,255,139,19,255,72,139,19, - 255,252,243,15,16,3,255,252,242,15,16,3,255,15,182,19,132,210,15,136,244, - 2,255,248,4,255,137,208,209,252,234,131,224,1,252,247,216,49,194,255,72,137, - 208,72,209,252,234,72,131,224,1,72,252,247,216,72,49,194,255,72,133,210,15, - 149,210,255,73,137,149,233,255,65,137,149,233,255,252,242,65,15,17,133,233, - 255,252,243,65,15,17,133,233,255,65,136,149,233,255,65,128,141,233,235,255, - 76,137,252,239,255,72,184,237,237,65,84,73,137,228,72,129,228,239,252,255, - 208,76,137,228,65,92,255,132,192,15,133,244,251,232,244,12,252,233,244,1, - 248,5,255,72,129,195,239,255,232,244,20,255,232,244,21,255,232,244,16,255, - 232,244,18,255,252,246,3,128,15,133,244,2,255,249,248,1,255,76,57,227,15, - 132,244,252,255,76,137,225,72,41,217,72,131,252,249,2,15,130,244,252,255, - 15,182,19,132,210,15,137,244,253,15,182,139,233,132,201,15,136,244,252,193, - 225,7,131,226,127,9,202,72,131,195,2,252,233,244,254,248,6,232,244,23,133, - 192,15,133,244,254,195,248,7,72,131,195,1,248,8,137,209,193,252,234,3,128, - 225,7,255,248,2,129,252,250,239,255,15,131,244,253,255,15,131,244,251,255, - 72,184,237,237,72,139,4,208,255,72,139,4,213,237,255,248,3,56,200,255,15, - 133,244,252,255,15,133,244,251,255,72,193,232,16,72,141,21,244,250,249,248, - 4,72,1,208,195,248,5,72,184,237,237,73,137,134,233,232,244,15,133,192,15, - 132,244,1,72,141,5,244,255,195,255,248,6,56,204,15,133,244,5,72,129,194,239, - 255,252,233,244,26,255,248,7,255,232,244,26,252,233,244,3,255,76,57,227,15, - 133,244,247,255,76,137,225,72,41,217,72,129,252,249,239,15,131,244,247,255, - 232,244,25,129,252,248,239,15,132,244,249,129,252,248,239,15,132,245,252, - 233,244,251,255,128,59,235,255,102,129,59,238,255,102,129,59,238,15,133,244, - 248,128,187,233,235,248,2,255,129,59,239,255,129,59,239,15,133,244,249,128, - 187,233,235,255,15,132,244,250,248,3,255,232,245,72,133,192,15,132,245,252, - 255,224,255,252,233,245,255,248,4,72,129,195,239,248,5,255,248,1,76,137,252, - 239,255,132,192,15,133,244,248,232,244,12,252,233,244,1,248,2,255,144,255, - 248,9,255,73,139,151,233,72,184,237,237,65,84,73,137,228,72,129,228,239,252, - 255,208,76,137,228,65,92,255,249,249,72,131,252,236,8,255,72,137,252,234, - 72,41,218,255,72,133,192,15,133,244,248,232,244,12,252,233,244,1,248,2,255, - 73,137,197,255,72,57,252,235,15,132,244,250,248,1,76,57,227,15,133,244,248, - 232,244,12,252,233,244,1,248,2,255,72,137,218,76,137,225,72,41,217,77,139, - 135,233,72,184,237,237,65,84,73,137,228,72,129,228,239,252,255,208,76,137, - 228,65,92,72,1,195,255,76,57,227,15,132,244,249,232,244,27,248,3,255,76,137, - 227,255,72,57,252,235,15,133,244,1,248,4,255,77,137,174,233,73,199,134,233, - 0,0,0,0,77,59,183,233,15,132,244,28,73,129,198,239,65,199,134,233,237,255, - 232,244,13,255,73,129,252,238,239,77,139,174,233,255,77,139,167,233,73,3, - 174,233,73,59,175,233,15,130,244,247,76,57,229,15,135,244,247,73,137,252, - 236,248,1,255,72,57,221,15,132,245,255,232,245,255,248,9,72,131,196,8,195, - 255 -}; - -# 12 "upb/pb/compile_decoder_x64.dasc" -/*|.globals UPB_JIT_GLOBAL_ */ -enum { - UPB_JIT_GLOBAL_enterjit, - UPB_JIT_GLOBAL_exitjit, - UPB_JIT_GLOBAL_suspend, - UPB_JIT_GLOBAL_pushlendelim, - UPB_JIT_GLOBAL_decodev32_fallback, - UPB_JIT_GLOBAL_parse_unknown, - UPB_JIT_GLOBAL_skipf32_fallback, - UPB_JIT_GLOBAL_decodef32_fallback, - UPB_JIT_GLOBAL_skipf64_fallback, - UPB_JIT_GLOBAL_decodef64_fallback, - UPB_JIT_GLOBAL_skipv32_fallback, - UPB_JIT_GLOBAL_skipv64_fallback, - UPB_JIT_GLOBAL_decode_varint_slow, - UPB_JIT_GLOBAL_decode_unknown_tag_fallback, - UPB_JIT_GLOBAL_decodev64_fallback, - UPB_JIT_GLOBAL_checktag_fallback, - UPB_JIT_GLOBAL_hashlookup, - UPB_JIT_GLOBAL_strret_fallback, - UPB_JIT_GLOBAL_err, - UPB_JIT_GLOBAL__MAX -}; -# 13 "upb/pb/compile_decoder_x64.dasc" -/*|.globalnames upb_jit_globalnames */ -static const char *const upb_jit_globalnames[] = { - "enterjit", - "exitjit", - "suspend", - "pushlendelim", - "decodev32_fallback", - "parse_unknown", - "skipf32_fallback", - "decodef32_fallback", - "skipf64_fallback", - "decodef64_fallback", - "skipv32_fallback", - "skipv64_fallback", - "decode_varint_slow", - "decode_unknown_tag_fallback", - "decodev64_fallback", - "checktag_fallback", - "hashlookup", - "strret_fallback", - "err", - (const char *)0 -}; -# 14 "upb/pb/compile_decoder_x64.dasc" -/*| */ -/*|// Calling conventions. Note -- this will need to be changed for */ -/*|// Windows, which uses a different calling convention! */ -/*|.define ARG1_64, rdi */ -/*|.define ARG2_8, r6b // DynASM's equivalent to "sil" -- low byte of esi. */ -/*|.define ARG2_32, esi */ -/*|.define ARG2_64, rsi */ -/*|.define ARG3_8, dl */ -/*|.define ARG3_32, edx */ -/*|.define ARG3_64, rdx */ -/*|.define ARG4_64, rcx */ -/*|.define ARG5_64, r8 */ -/*|.define XMMARG1, xmm0 */ -/*| */ -/*|// Register allocation / type map. */ -/*|// ALL of the code in this file uses these register allocations. */ -/*|// When we "call" within this file, we do not use regular calling */ -/*|// conventions, but of course when calling to user callbacks we must. */ -/*|.define PTR, rbx // DECODER->ptr (unsynced) */ -/*|.define DATAEND, r12 // DECODER->data_end (unsynced) */ -/*|.define CLOSURE, r13 // FRAME->closure (unsynced) */ -/*|.type FRAME, upb_pbdecoder_frame, r14 // DECODER->top (unsynced) */ -#define Dt1(_V) (int)(ptrdiff_t)&(((upb_pbdecoder_frame *)0)_V) -# 36 "upb/pb/compile_decoder_x64.dasc" -/*|.type DECODER, upb_pbdecoder, r15 // DECODER (immutable) */ -#define Dt2(_V) (int)(ptrdiff_t)&(((upb_pbdecoder *)0)_V) -# 37 "upb/pb/compile_decoder_x64.dasc" -/*|.define DELIMEND, rbp */ -/*| */ -/*| // Spills unsynced registers back to memory. */ -/*|.macro commit_regs */ -/*| mov DECODER->top, FRAME */ -/*| mov DECODER->ptr, PTR */ -/*| mov DECODER->data_end, DATAEND */ -/*| // We don't guarantee that delim_end is NULL when out of range like the */ -/*| // interpreter does. */ -/*| mov DECODER->delim_end, DELIMEND */ -/*| sub DELIMEND, DECODER->buf */ -/*| add DELIMEND, DECODER->bufstart_ofs */ -/*| mov FRAME->end_ofs, DELIMEND */ -/*| mov FRAME->sink.closure, CLOSURE */ -/*|.endmacro */ -/*| */ -/*| // Loads unsynced registers from memory back into registers. */ -/*|.macro load_regs */ -/*| mov FRAME, DECODER->top */ -/*| mov PTR, DECODER->ptr */ -/*| mov DATAEND, DECODER->data_end */ -/*| mov CLOSURE, FRAME->sink.closure */ -/*| mov DELIMEND, FRAME->end_ofs */ -/*| sub DELIMEND, DECODER->bufstart_ofs */ -/*| add DELIMEND, DECODER->buf */ -/*|.endmacro */ -/*| */ -/*| // Calls an external C function at address "addr". */ -/*|.macro callp, addr */ -/*| mov64 rax, (uintptr_t)addr */ -/*| */ -/*| // Stack must be 16-byte aligned (x86-64 ABI requires this). */ -/*| // */ -/*| // OPT: possibly remove this by statically ensuring correct alignment. */ -/*| // */ -/*| // OPT: use "call rel32" where possible. */ -/*| push r12 */ -/*| mov r12, rsp */ -/*| and rsp, 0xfffffffffffffff0UL // Align stack. */ -/*| call rax */ -/*| mov rsp, r12 */ -/*| pop r12 */ -/*|.endmacro */ -/*| */ -/*|.macro ld64, val */ -/*|| { */ -/*|| uintptr_t v = (uintptr_t)val; */ -/*|| if (v > 0xffffffff) { */ -/*| mov64 ARG2_64, v */ -/*|| } else if (v) { */ -/*| mov ARG2_32, v */ -/*|| } else { */ -/*| xor ARG2_32, ARG2_32 */ -/*|| } */ -/*|| } */ -/*|.endmacro */ -/*| */ -/*|.macro load_handler_data, h, arg */ -/*| ld64 upb_handlers_gethandlerdata(h, arg) */ -/*|.endmacro */ -/*| */ -/*|.macro chkeob, bytes, target */ -/*|| if (bytes == 1) { */ -/*| cmp PTR, DATAEND */ -/*| je target */ -/*|| } else { */ -/*| mov rcx, DATAEND */ -/*| sub rcx, PTR */ -/*| cmp rcx, bytes */ -/*| jb target */ -/*|| } */ -/*|.endmacro */ -/*| */ -/*|.macro chkneob, bytes, target */ -/*|| if (bytes == 1) { */ -/*| cmp PTR, DATAEND */ -/*| jne target */ -/*|| } else { */ -/*| mov rcx, DATAEND */ -/*| sub rcx, PTR */ -/*| cmp rcx, bytes */ -/*| jae target */ -/*|| } */ -/*|.endmacro */ - -/*|.macro sethas, reg, hasbit */ -/*|| if (hasbit >= 0) { */ -/*| or byte [reg + ((uint32_t)hasbit / 8)], (1 << ((uint32_t)hasbit % 8)) */ -/*|| } */ -/*|.endmacro */ -/*| */ -/*| // Decodes 32-bit varint into rdx, inlining 1 byte. */ -/*|.macro dv32 */ -/*| chkeob 1, >7 */ -/*| movzx edx, byte [PTR] */ -/*| test dl, dl */ -/*| jns >8 */ -/*|7: */ -/*| call ->decodev32_fallback */ -/*|8: */ -/*| add PTR, 1 */ -/*|.endmacro */ - -#define DECODE_EOF -3 - -static upb_func *gethandler(const upb_handlers *h, upb_selector_t sel) { - return h ? upb_handlers_gethandler(h, sel) : NULL; -} - -/* Defines an "assembly label" for the current code generation offset. - * This label exists *purely* for debugging purposes: it is emitted into - * the .so, and printed as part of JIT debugging output when UPB_JIT_LOAD_SO is - * defined. - * - * We would define this in the .c file except that it conditionally defines a - * pclabel. */ -static void asmlabel(jitcompiler *jc, const char *fmt, ...) { -#ifndef NDEBUG - int ofs = jc->dynasm->section->ofs; - UPB_ASSERT(ofs != jc->lastlabelofs); - jc->lastlabelofs = ofs; -#endif - -#ifndef UPB_JIT_LOAD_SO - UPB_UNUSED(jc); - UPB_UNUSED(fmt); -#else - va_list args; - va_start(args, fmt); - char *str = upb_vasprintf(fmt, args); - va_end(args); - - int pclabel = alloc_pclabel(jc); - /* Normally we would prefer to allocate this inline with the codegen, - * ie. - * |=>asmlabel(...) - * But since we do this conditionally, only when UPB_JIT_LOAD_SO is defined, - * we do it here instead. */ - /*|=>pclabel: */ - dasm_put(Dst, 0, pclabel); -# 176 "upb/pb/compile_decoder_x64.dasc" - upb_inttable_insert(&jc->asmlabels, pclabel, upb_value_ptr(str)); -#endif -} - -/* Should only be called when the associated handler is known to exist. */ -static bool alwaysok(const upb_handlers *h, upb_selector_t sel) { - upb_handlerattr attr = UPB_HANDLERATTR_INITIALIZER; - bool ok = upb_handlers_getattr(h, sel, &attr); - bool ret; - - UPB_ASSERT(ok); - ret = upb_handlerattr_alwaysok(&attr); - upb_handlerattr_uninit(&attr); - return ret; -} - -/* Emit static assembly routines; code that does not vary based on the message - * schema. Since it's not input-dependent, we only need one single copy of it. - * For the moment we generate a single copy per generated handlers. Eventually - * we should generate this code at compile time and link it into the binary so - * we have one copy total. To do that we'll want to be sure that it is within - * 2GB of our JIT code, so that branches between the two are near (rel32). - * - * We'd put this assembly in a .s file directly, but DynASM's ability to - * calculate structure offsets automatically is too useful to pass up (it's way - * more convenient to write DECODER->sink than [rbx + 0x96], especially since - * the latter would have to be changed whenever the structure is updated). */ -static void emit_static_asm(jitcompiler *jc) { - /*| // Trampolines for entering/exiting the JIT. These are a bit tricky to */ - /*| // support full resuming; when we suspend we copy the JIT's portion of */ - /*| // the call stack into the upb_pbdecoder and restore it when we resume. */ - asmlabel(jc, "enterjit"); - /*|->enterjit: */ - /*|1: */ - /*| push rbp */ - /*| push r15 */ - /*| push r14 */ - /*| push r13 */ - /*| push r12 */ - /*| push rbx */ - /*| */ - /*| mov rbx, ARG2_64 // Preserve JIT method. */ - /*| */ - /*| mov DECODER, rdi */ - /*| callp upb_pbdecoder_resume // Same args as us; reuse regs. */ - /*| test eax, eax */ - /*| jns >1 */ - /*| mov DECODER->saved_rsp, rsp */ - /*| mov rax, rbx */ - /*| load_regs */ - /*| */ - /*| // Test whether we have a saved stack to resume. */ - /*| mov ARG3_64, DECODER->call_len */ - /*| test ARG3_64, ARG3_64 */ - /*| jnz >2 */ - /*| */ - /*| call rax */ - /*| */ - /*| mov rax, DECODER->size_param */ - /*| mov qword DECODER->call_len, 0 */ - /*|1: */ - /*| pop rbx */ - dasm_put(Dst, 2, (unsigned int)((uintptr_t)upb_pbdecoder_resume), (unsigned int)(((uintptr_t)upb_pbdecoder_resume)>>32), 0xfffffffffffffff0UL, Dt2(->saved_rsp), Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs), Dt2(->bufstart_ofs), Dt2(->buf), Dt2(->call_len), Dt2(->size_param), Dt2(->call_len)); -# 238 "upb/pb/compile_decoder_x64.dasc" - /*| pop r12 */ - /*| pop r13 */ - /*| pop r14 */ - /*| pop r15 */ - /*| pop rbp */ - /*| ret */ - /*| */ - /*|2: */ - /*| // Resume decoder. */ - /*| mov ARG2_64, DECODER->callstack */ - /*| sub rsp, ARG3_64 */ - /*| mov ARG1_64, rsp */ - /*| callp memcpy // Restore stack. */ - /*| ret // Return to resumed function (not ->enterjit caller). */ - /*| */ - /*| // Other code can call this to suspend the JIT. */ - /*| // To the calling code, it will appear that the function returns when */ - /*| // the JIT resumes, and more buffer space will be available. */ - /*| // Args: eax=the value that decode() should return. */ - dasm_put(Dst, 115, Dt2(->callstack), (unsigned int)((uintptr_t)memcpy), (unsigned int)(((uintptr_t)memcpy)>>32), 0xfffffffffffffff0UL); -# 257 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "exitjit"); - /*|->exitjit: */ - /*| // Save the stack into DECODER->callstack. */ - /*| mov ARG1_64, DECODER->callstack */ - /*| mov ARG2_64, rsp */ - /*| mov ARG3_64, DECODER->saved_rsp */ - /*| sub ARG3_64, rsp */ - /*| mov DECODER->call_len, ARG3_64 // Preserve len for next resume. */ - /*| mov ebx, eax // Preserve return value across memcpy. */ - /*| callp memcpy // Copy stack into decoder. */ - /*| mov eax, ebx // This will be our return value. */ - /*| */ - /*| // Must NOT do this before the memcpy(), otherwise memcpy() will */ - /*| // clobber the stack we are trying to save! */ - /*| mov rsp, DECODER->saved_rsp */ - /*| pop rbx */ - /*| pop r12 */ - /*| pop r13 */ - /*| pop r14 */ - /*| pop r15 */ - /*| pop rbp */ - /*| ret */ - /*| */ - /*| // Like suspend() in the C decoder, except that the function appears */ - /*| // (from the caller's perspective) not to return until the decoder is */ - /*| // resumed. */ - dasm_put(Dst, 161, Dt2(->callstack), Dt2(->saved_rsp), Dt2(->call_len), (unsigned int)((uintptr_t)memcpy), (unsigned int)(((uintptr_t)memcpy)>>32), 0xfffffffffffffff0UL, Dt2(->saved_rsp)); -# 283 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "suspend"); - /*|->suspend: */ - /*| cmp DECODER->ptr, PTR */ - /*| je >1 */ - /*| mov DECODER->checkpoint, PTR */ - /*|1: */ - /*| commit_regs */ - /*| mov rdi, DECODER */ - /*| callp upb_pbdecoder_suspend */ - /*| jmp ->exitjit */ - /*| */ - dasm_put(Dst, 222, Dt2(->ptr), Dt2(->checkpoint), Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), (unsigned int)((uintptr_t)upb_pbdecoder_suspend), (unsigned int)(((uintptr_t)upb_pbdecoder_suspend)>>32), 0xfffffffffffffff0UL); -# 294 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "pushlendelim"); - /*|->pushlendelim: */ - /*|1: */ - /*| mov FRAME->sink.closure, CLOSURE */ - /*| mov DECODER->checkpoint, PTR */ - /*| dv32 */ - dasm_put(Dst, 300, Dt1(->sink.closure), Dt2(->checkpoint)); - if (1 == 1) { - dasm_put(Dst, 313); - } else { - dasm_put(Dst, 321); - } -# 300 "upb/pb/compile_decoder_x64.dasc" - /*| mov rcx, DELIMEND */ - /*| sub rcx, PTR */ - /*| sub rcx, rdx */ - /*| jb >4 // Len is greater than enclosing message. */ - /*| mov FRAME->end_ofs, rcx */ - /*| cmp FRAME, DECODER->limit */ - /*| je >3 // Stack overflow */ - /*| add FRAME, sizeof(upb_pbdecoder_frame) */ - /*| mov DELIMEND, PTR */ - /*| add DELIMEND, rdx */ - /*| mov dword FRAME->groupnum, 0 */ - /*| test rcx, rcx */ - /*| jz >2 */ - /*| mov DATAEND, DECODER->end */ - /*| cmp PTR, DELIMEND */ - /*| ja >2 */ - /*| cmp DELIMEND, DATAEND */ - /*| ja >2 */ - /*| mov DATAEND, DELIMEND // If DELIMEND >= PTR && DELIMEND < DATAEND */ - dasm_put(Dst, 337, Dt1(->end_ofs), Dt2(->limit), sizeof(upb_pbdecoder_frame), Dt1(->groupnum), Dt2(->end)); -# 319 "upb/pb/compile_decoder_x64.dasc" - /*|2: */ - /*| ret */ - /*|3: */ - /*| // Stack overflow error. */ - /*| mov PTR, DECODER->checkpoint // Rollback to before the delim len. */ - /*| // Prepare seterr args. */ - /*| mov ARG1_64, DECODER */ - /*| ld64 kPbDecoderStackOverflow */ - dasm_put(Dst, 428, Dt2(->checkpoint)); - { - uintptr_t v = (uintptr_t)kPbDecoderStackOverflow; - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 327 "upb/pb/compile_decoder_x64.dasc" - /*| callp upb_pbdecoder_seterr */ - /*| call ->suspend */ - /*| jmp <1 */ - /*|4: */ - /*| // Overextended len. */ - /*| mov PTR, DECODER->checkpoint // Rollback to before the delim len. */ - /*| // Prepare seterr args. */ - /*| mov ARG1_64, DECODER */ - /*| ld64 kPbDecoderSubmessageTooLong */ - dasm_put(Dst, 458, (unsigned int)((uintptr_t)upb_pbdecoder_seterr), (unsigned int)(((uintptr_t)upb_pbdecoder_seterr)>>32), 0xfffffffffffffff0UL, Dt2(->checkpoint)); - { - uintptr_t v = (uintptr_t)kPbDecoderSubmessageTooLong; - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 336 "upb/pb/compile_decoder_x64.dasc" - /*| callp upb_pbdecoder_seterr */ - /*| call ->suspend */ - /*| jmp <1 */ - /*| */ - /*| // For getting a value that spans a buffer seam. Falls back to C. */ - /*|.macro getvalue_slow, func, bytes */ - /*| sub rsp, 8 // Need stack space for func to write value to. */ - /*|1: */ - /*| mov qword [rsp], 0 // For parsing routines that only parse 32 bits. */ - /*| mov ARG1_64, DECODER */ - /*| mov ARG2_64, rsp */ - /*| mov DECODER->checkpoint, PTR */ - /*| commit_regs */ - /*| callp func */ - /*| load_regs */ - /*| test eax, eax */ - /*| jns >2 */ - /*| // Success; return parsed data (in rdx AND xmm0). */ - /*| mov rdx, [rsp] */ - /*| movsd xmm0, qword [rsp] */ - /*| add rsp, 8 */ - /*| sub PTR, bytes // Bias our buffer pointer to rejoin the fast-path. */ - /*| mov DECODER->ptr, PTR */ - /*| ret */ - /*|2: */ - /*| call ->exitjit // Return eax from decode function. */ - /*| jmp <1 */ - /*|.endmacro */ - /*| */ - dasm_put(Dst, 497, (unsigned int)((uintptr_t)upb_pbdecoder_seterr), (unsigned int)(((uintptr_t)upb_pbdecoder_seterr)>>32), 0xfffffffffffffff0UL); -# 365 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "parse_unknown"); - /*| // Args: edx=fieldnum, cl=wire type */ - /*|->parse_unknown: */ - /*| // OPT: handle directly instead of kicking to C. */ - /*| // Check for ENDGROUP. */ - /*| mov ARG1_64, DECODER */ - /*| mov ARG2_32, edx */ - /*| movzx ARG3_32, cl */ - /*| commit_regs */ - /*| callp upb_pbdecoder_skipunknown */ - /*| load_regs */ - /*| cmp eax, DECODE_ENDGROUP */ - /*| jne >1 */ - dasm_put(Dst, 526, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), (unsigned int)((uintptr_t)upb_pbdecoder_skipunknown), (unsigned int)(((uintptr_t)upb_pbdecoder_skipunknown)>>32), 0xfffffffffffffff0UL, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs), Dt2(->bufstart_ofs), Dt2(->buf), DECODE_ENDGROUP); -# 378 "upb/pb/compile_decoder_x64.dasc" - /*| ret // Return eax=DECODE_ENDGROUP, not zero */ - /*|1: */ - /*| cmp eax, DECODE_OK */ - /*| je >1 */ - /*| call ->exitjit // Return eax from decode function. */ - /*|1: */ - /*| xor eax, eax */ - /*| ret */ - /*| */ - /*| // Fallback functions for parsing single values. These are used when the */ - /*| // buffer doesn't contain enough remaining data for the fast path. Each */ - /*| // primitive type (v32, v64, f32, f64) has two functions: decode & skip. */ - /*| // Decode functions return their value in rsi/esi. */ - /*| // */ - /*| // These functions leave PTR = value_end - fast_path_bytes, so that we can */ - /*| // re-join the fast path which will add fast_path_bytes after the callback */ - /*| // completes. We also set DECODER->ptr to this value which is a signal to */ - /*| // ->suspend that DECODER->checkpoint is up to date. */ - dasm_put(Dst, 623, DECODE_OK); -# 396 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "skip_decode_f32_fallback"); - /*|->skipf32_fallback: */ - /*|->decodef32_fallback: */ - /*| getvalue_slow upb_pbdecoder_decode_f32, 4 */ - dasm_put(Dst, 647, Dt2(->checkpoint), Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), (unsigned int)((uintptr_t)upb_pbdecoder_decode_f32), (unsigned int)(((uintptr_t)upb_pbdecoder_decode_f32)>>32), 0xfffffffffffffff0UL, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs)); -# 400 "upb/pb/compile_decoder_x64.dasc" - /*| */ - dasm_put(Dst, 751, Dt2(->bufstart_ofs), Dt2(->buf), Dt2(->ptr)); -# 401 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "skip_decode_f64_fallback"); - /*|->skipf64_fallback: */ - /*|->decodef64_fallback: */ - /*| getvalue_slow upb_pbdecoder_decode_f64, 8 */ - dasm_put(Dst, 799, Dt2(->checkpoint), Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), (unsigned int)((uintptr_t)upb_pbdecoder_decode_f64), (unsigned int)(((uintptr_t)upb_pbdecoder_decode_f64)>>32), 0xfffffffffffffff0UL, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs)); -# 405 "upb/pb/compile_decoder_x64.dasc" - /*| */ - /*| // Called for varint >= 1 byte. */ - dasm_put(Dst, 903, Dt2(->bufstart_ofs), Dt2(->buf), Dt2(->ptr)); -# 407 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "skip_decode_v32_fallback"); - /*|->skipv32_fallback: */ - /*|->skipv64_fallback: */ - /*| chkeob 16, >1 */ - dasm_put(Dst, 951); - if (16 == 1) { - dasm_put(Dst, 956); - } else { - dasm_put(Dst, 964); - } -# 411 "upb/pb/compile_decoder_x64.dasc" - /*| // With at least 16 bytes left, we can do a branch-less SSE version. */ - /*| movdqu xmm0, [PTR] */ - /*| pmovmskb eax, xmm0 // bits 0-15 are continuation bits, 16-31 are 0. */ - /*| not eax */ - /*| bsf eax, eax */ - /*| cmp al, 10 */ - /*| jae ->decode_varint_slow // Error (>10 byte varint). */ - /*| add PTR, rax // bsf result is 0-based, so PTR=end-1, as desired. */ - /*| ret */ - /*| */ - /*|1: */ - /*| // With fewer than 16 bytes, we have to read byte by byte. */ - /*| lea rcx, [PTR + 10] */ - /*| mov rax, PTR // Preserve PTR in case of fallback to slow path. */ - /*| cmp rcx, DATAEND */ - /*| cmova rcx, DATAEND // rcx = MIN(DATAEND, PTR + 10) */ - /*|2: */ - /*| cmp rax, rcx */ - /*| je ->decode_varint_slow */ - /*| test byte [rax], 0x80 */ - /*| jz >3 */ - /*| add rax, 1 */ - /*| jmp <2 */ - /*|3: */ - /*| mov PTR, rax // PTR = varint_end - 1, as desired */ - /*| ret */ - /*| */ - /*| // Returns tag in edx */ - dasm_put(Dst, 980, 10); -# 439 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "decode_unknown_tag_fallback"); - /*|->decode_unknown_tag_fallback: */ - /*| sub rsp, 16 */ - /*|1: */ - /*| cmp PTR, DELIMEND */ - /*| jne >2 */ - /*| add rsp, 16 */ - /*| xor eax, eax */ - /*| ret */ - /*|2: */ - /*| // OPT: Have a medium-fast path before falling back to _slow. */ - /*| mov ARG1_64, DECODER */ - /*| mov ARG2_64, rsp */ - /*| commit_regs */ - /*| callp upb_pbdecoder_decode_varint_slow */ - /*| load_regs */ - dasm_put(Dst, 1053, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), (unsigned int)((uintptr_t)upb_pbdecoder_decode_varint_slow), (unsigned int)(((uintptr_t)upb_pbdecoder_decode_varint_slow)>>32), 0xfffffffffffffff0UL, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure)); -# 455 "upb/pb/compile_decoder_x64.dasc" - /*| cmp eax, 0 */ - /*| jge >3 */ - /*| mov edx, [rsp] // Success; return parsed data. */ - /*| add rsp, 16 */ - /*| ret */ - /*|3: */ - /*| call ->exitjit // Return eax from decode function. */ - /*| jmp <1 */ - /*| */ - /*| // Called for varint >= 1 byte. */ - dasm_put(Dst, 1156, Dt1(->end_ofs), Dt2(->bufstart_ofs), Dt2(->buf)); -# 465 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "decode_v32_v64_fallback"); - /*|->decodev32_fallback: */ - /*|->decodev64_fallback: */ - /*| chkeob 10, ->decode_varint_slow */ - dasm_put(Dst, 1194); - if (10 == 1) { - dasm_put(Dst, 1199); - } else { - dasm_put(Dst, 1207); - } -# 469 "upb/pb/compile_decoder_x64.dasc" - /*| // OPT: do something faster than just calling the C version. */ - /*| mov rdi, PTR */ - /*| callp upb_vdecode_fast */ - /*| test rax, rax */ - /*| je ->decode_varint_slow // Unterminated varint. */ - /*| mov PTR, rax */ - /*| sub PTR, 1 */ - /*| mov DECODER->ptr, PTR */ - /*| ret */ - /*| */ - dasm_put(Dst, 1223, (unsigned int)((uintptr_t)upb_vdecode_fast), (unsigned int)(((uintptr_t)upb_vdecode_fast)>>32), 0xfffffffffffffff0UL, Dt2(->ptr)); -# 479 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "decode_varint_slow"); - /*|->decode_varint_slow: */ - /*| // Slow path: end of buffer or error (varint length >= 10). */ - /*| getvalue_slow upb_pbdecoder_decode_varint_slow, 1 */ - dasm_put(Dst, 1268, Dt2(->checkpoint), Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), (unsigned int)((uintptr_t)upb_pbdecoder_decode_varint_slow), (unsigned int)(((uintptr_t)upb_pbdecoder_decode_varint_slow)>>32), 0xfffffffffffffff0UL, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs), Dt2(->bufstart_ofs)); -# 483 "upb/pb/compile_decoder_x64.dasc" - /*| */ - /*| // Args: rsi=expected tag, return=rax (DECODE_{OK,MISMATCH}) */ - dasm_put(Dst, 1374, Dt2(->buf), Dt2(->ptr)); -# 485 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "checktag_fallback"); - /*|->checktag_fallback: */ - /*| sub rsp, 8 */ - /*| mov [rsp], rsi // Preserve expected tag. */ - /*|1: */ - /*| mov ARG1_64, DECODER */ - /*| commit_regs */ - /*| mov DECODER->checkpoint, PTR */ - /*| callp upb_pbdecoder_checktag_slow */ - /*| load_regs */ - dasm_put(Dst, 1418, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), Dt2(->checkpoint), (unsigned int)((uintptr_t)upb_pbdecoder_checktag_slow), (unsigned int)(((uintptr_t)upb_pbdecoder_checktag_slow)>>32), 0xfffffffffffffff0UL, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs), Dt2(->bufstart_ofs)); -# 495 "upb/pb/compile_decoder_x64.dasc" - /*| cmp eax, 0 */ - /*| jge >2 */ - /*| add rsp, 8 */ - /*| ret */ - /*|2: */ - /*| call ->exitjit */ - /*| mov rsi, [rsp] */ - /*| cmp PTR, DELIMEND */ - /*| jne <1 */ - /*| mov eax, DECODE_EOF */ - /*| add rsp, 8 */ - /*| ret */ - /*| */ - /*| // Args: rsi=upb_inttable, rdx=key, return=rax (-1 if not found). */ - /*| // Preserves: rcx, rdx */ - /*| // OPT: Could write this in assembly if it's a hotspot. */ - dasm_put(Dst, 1517, Dt2(->buf), DECODE_EOF); -# 511 "upb/pb/compile_decoder_x64.dasc" - asmlabel(jc, "hashlookup"); - /*|->hashlookup: */ - /*| push rcx */ - /*| push rdx */ - /*| sub rsp, 16 */ - /*| mov rdi, rsi */ - /*| mov rsi, rdx */ - /*| mov rdx, rsp */ - /*| callp upb_inttable_lookup */ - /*| add rsp, 16 */ - /*| pop rdx */ - /*| pop rcx */ - /*| test al, al */ - /*| jz >2 // Unknown field. */ - /*| mov rax, [rsp-32] // Value from table. */ - /*| ret */ - /*|2: */ - /*| xor rax, rax */ - /*| not rax */ - /*| ret */ - dasm_put(Dst, 1559, (unsigned int)((uintptr_t)upb_inttable_lookup), (unsigned int)(((uintptr_t)upb_inttable_lookup)>>32), 0xfffffffffffffff0UL); -# 531 "upb/pb/compile_decoder_x64.dasc" -} - -static void jitprimitive(jitcompiler *jc, opcode op, - const upb_handlers *h, upb_selector_t sel) { - typedef enum { V32, V64, F32, F64, X } valtype_t; - static valtype_t types[] = { - X, F64, F32, V64, V64, V32, F64, F32, V64, X, X, X, X, V32, V32, F32, F64, - V32, V64 }; - static char fastpath_bytes[] = { 1, 1, 4, 8 }; - const valtype_t vtype = types[op]; - const int fastbytes = fastpath_bytes[vtype]; - upb_func *handler = gethandler(h, sel); - upb_fieldtype_t ftype; - size_t offset; - int32_t hasbit; - - if (handler) { - /*|1: */ - /*| chkneob fastbytes, >3 */ - dasm_put(Dst, 112); - if (fastbytes == 1) { - dasm_put(Dst, 1628); - } else { - dasm_put(Dst, 1636, fastbytes); - } -# 550 "upb/pb/compile_decoder_x64.dasc" - /*|2: */ - dasm_put(Dst, 1652); -# 551 "upb/pb/compile_decoder_x64.dasc" - switch (vtype) { - case V32: - /*| call ->decodev32_fallback */ - dasm_put(Dst, 1655); -# 554 "upb/pb/compile_decoder_x64.dasc" - break; - case V64: - /*| call ->decodev64_fallback */ - dasm_put(Dst, 1659); -# 557 "upb/pb/compile_decoder_x64.dasc" - break; - case F32: - /*| call ->decodef32_fallback */ - dasm_put(Dst, 1663); -# 560 "upb/pb/compile_decoder_x64.dasc" - break; - case F64: - /*| call ->decodef64_fallback */ - dasm_put(Dst, 1667); -# 563 "upb/pb/compile_decoder_x64.dasc" - break; - case X: break; - } - /*| jmp >4 */ - dasm_put(Dst, 1671); -# 567 "upb/pb/compile_decoder_x64.dasc" - - /* Fast path decode; for when check_bytes bytes are available. */ - /*|3: */ - dasm_put(Dst, 1676); -# 570 "upb/pb/compile_decoder_x64.dasc" - switch (op) { - case OP_PARSE_SFIXED32: - case OP_PARSE_FIXED32: - /*| mov edx, dword [PTR] */ - dasm_put(Dst, 1679); -# 574 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_PARSE_SFIXED64: - case OP_PARSE_FIXED64: - /*| mov rdx, qword [PTR] */ - dasm_put(Dst, 1682); -# 578 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_PARSE_FLOAT: - /*| movss xmm0, dword [PTR] */ - dasm_put(Dst, 1686); -# 581 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_PARSE_DOUBLE: - /*| movsd xmm0, qword [PTR] */ - dasm_put(Dst, 1692); -# 584 "upb/pb/compile_decoder_x64.dasc" - break; - default: - /* Inline one byte of varint decoding. */ - /*| movzx edx, byte [PTR] */ - /*| test dl, dl */ - /*| js <2 // Fallback to slow path for >1 byte varint. */ - dasm_put(Dst, 1698); -# 590 "upb/pb/compile_decoder_x64.dasc" - break; - } - - /* Second-stage decode; used for both fast and slow paths */ - /* (only needed for a few types). */ - /*|4: */ - dasm_put(Dst, 1708); -# 596 "upb/pb/compile_decoder_x64.dasc" - switch (op) { - case OP_PARSE_SINT32: - /* 32-bit zig-zag decode. */ - /*| mov eax, edx */ - /*| shr edx, 1 */ - /*| and eax, 1 */ - /*| neg eax */ - /*| xor edx, eax */ - dasm_put(Dst, 1711); -# 604 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_PARSE_SINT64: - /* 64-bit zig-zag decode. */ - /*| mov rax, rdx */ - /*| shr rdx, 1 */ - /*| and rax, 1 */ - /*| neg rax */ - /*| xor rdx, rax */ - dasm_put(Dst, 1725); -# 612 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_PARSE_BOOL: - /*| test rdx, rdx */ - /*| setne dl */ - dasm_put(Dst, 1744); -# 616 "upb/pb/compile_decoder_x64.dasc" - break; - default: break; - } - - /* Call callback (or specialize if we can). */ - if (upb_msg_getscalarhandlerdata(h, sel, &ftype, &offset, &hasbit)) { - switch (ftype) { - case UPB_TYPE_INT64: - case UPB_TYPE_UINT64: - /*| mov [CLOSURE + offset], rdx */ - dasm_put(Dst, 1751, offset); -# 626 "upb/pb/compile_decoder_x64.dasc" - break; - case UPB_TYPE_INT32: - case UPB_TYPE_UINT32: - case UPB_TYPE_ENUM: - /*| mov [CLOSURE + offset], edx */ - dasm_put(Dst, 1756, offset); -# 631 "upb/pb/compile_decoder_x64.dasc" - break; - case UPB_TYPE_DOUBLE: - /*| movsd qword [CLOSURE + offset], XMMARG1 */ - dasm_put(Dst, 1761, offset); -# 634 "upb/pb/compile_decoder_x64.dasc" - break; - case UPB_TYPE_FLOAT: - /*| movss dword [CLOSURE + offset], XMMARG1 */ - dasm_put(Dst, 1769, offset); -# 637 "upb/pb/compile_decoder_x64.dasc" - break; - case UPB_TYPE_BOOL: - /*| mov [CLOSURE + offset], dl */ - dasm_put(Dst, 1777, offset); -# 640 "upb/pb/compile_decoder_x64.dasc" - break; - case UPB_TYPE_STRING: - case UPB_TYPE_BYTES: - case UPB_TYPE_MESSAGE: - UPB_ASSERT(false); break; - } - /*| sethas CLOSURE, hasbit */ - if (hasbit >= 0) { - dasm_put(Dst, 1782, ((uint32_t)hasbit / 8), (1 << ((uint32_t)hasbit % 8))); - } -# 647 "upb/pb/compile_decoder_x64.dasc" - } else if (handler) { - /*| mov ARG1_64, CLOSURE */ - /*| load_handler_data h, sel */ - dasm_put(Dst, 1788); - { - uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, sel); - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 650 "upb/pb/compile_decoder_x64.dasc" - /*| callp handler */ - dasm_put(Dst, 1793, (unsigned int)((uintptr_t)handler), (unsigned int)(((uintptr_t)handler)>>32), 0xfffffffffffffff0UL); -# 651 "upb/pb/compile_decoder_x64.dasc" - if (!alwaysok(h, sel)) { - /*| test al, al */ - /*| jnz >5 */ - /*| call ->suspend */ - /*| jmp <1 */ - /*|5: */ - dasm_put(Dst, 1815); -# 657 "upb/pb/compile_decoder_x64.dasc" - } - } - - /* We do this last so that the checkpoint is not advanced past the user's - * data until the callback has returned success. */ - /*| add PTR, fastbytes */ - dasm_put(Dst, 1831, fastbytes); -# 663 "upb/pb/compile_decoder_x64.dasc" - } else { - /* No handler registered for this value, just skip it. */ - /*| chkneob fastbytes, >3 */ - if (fastbytes == 1) { - dasm_put(Dst, 1628); - } else { - dasm_put(Dst, 1636, fastbytes); - } -# 666 "upb/pb/compile_decoder_x64.dasc" - /*|2: */ - dasm_put(Dst, 1652); -# 667 "upb/pb/compile_decoder_x64.dasc" - switch (vtype) { - case V32: - /*| call ->skipv32_fallback */ - dasm_put(Dst, 1836); -# 670 "upb/pb/compile_decoder_x64.dasc" - break; - case V64: - /*| call ->skipv64_fallback */ - dasm_put(Dst, 1840); -# 673 "upb/pb/compile_decoder_x64.dasc" - break; - case F32: - /*| call ->skipf32_fallback */ - dasm_put(Dst, 1844); -# 676 "upb/pb/compile_decoder_x64.dasc" - break; - case F64: - /*| call ->skipf64_fallback */ - dasm_put(Dst, 1848); -# 679 "upb/pb/compile_decoder_x64.dasc" - break; - case X: break; - } - - /* Fast-path skip. */ - /*|3: */ - dasm_put(Dst, 1676); -# 685 "upb/pb/compile_decoder_x64.dasc" - if (vtype == V32 || vtype == V64) { - /*| test byte [PTR], 0x80 */ - /*| jnz <2 */ - dasm_put(Dst, 1852); -# 688 "upb/pb/compile_decoder_x64.dasc" - } - /*| add PTR, fastbytes */ - dasm_put(Dst, 1831, fastbytes); -# 690 "upb/pb/compile_decoder_x64.dasc" - } -} - -static void jitdispatch(jitcompiler *jc, - const upb_pbdecodermethod *method) { - /* Lots of room for tweaking/optimization here. */ - - const upb_inttable *dispatch = &method->dispatch; - bool has_hash_entries = (dispatch->t.count > 0); - - /* Whether any of the fields for this message can have two wire types which - * are both valid (packed & non-packed). - * - * OPT: populate this more precisely; not all messages with hash entries have - * this characteristic. */ - bool has_multi_wiretype = has_hash_entries; - - /*|=>define_jmptarget(jc, &method->dispatch): */ - /*|1: */ - dasm_put(Dst, 1861, define_jmptarget(jc, &method->dispatch)); -# 709 "upb/pb/compile_decoder_x64.dasc" - /* Decode the field tag. */ - /*| mov aword DECODER->checkpoint, PTR */ - /*| chkeob 2, >6 */ - dasm_put(Dst, 308, Dt2(->checkpoint)); - if (2 == 1) { - dasm_put(Dst, 1865); - } else { - dasm_put(Dst, 1873); - } -# 712 "upb/pb/compile_decoder_x64.dasc" - /*| movzx edx, byte [PTR] */ - /*| test dl, dl */ - /*| jns >7 // Jump if first byte has no continuation bit. */ - /*| movzx ecx, byte [PTR + 1] */ - /*| test cl, cl */ - /*| js >6 // Jump if second byte has continuation bit. */ - /*| // Confirmed two-byte varint. */ - /*| shl ecx, 7 */ - /*| and edx, 0x7f */ - /*| or edx, ecx */ - /*| add PTR, 2 */ - /*| jmp >8 */ - /*|6: */ - /*| call ->decode_unknown_tag_fallback */ - /*| test eax, eax // Hit DELIMEND? */ - /*| jnz >8 */ - /*| ret */ - /*|7: */ - /*| add PTR, 1 */ - /*|8: */ - /*| mov ecx, edx */ - /*| shr edx, 3 */ - /*| and cl, 7 */ - dasm_put(Dst, 1889, 1); -# 735 "upb/pb/compile_decoder_x64.dasc" - - /* See comment attached to upb_pbdecodermethod.dispatch for layout of the - * dispatch table. */ - /*|2: */ - /*| cmp edx, dispatch->array_size */ - dasm_put(Dst, 1954, dispatch->array_size); -# 740 "upb/pb/compile_decoder_x64.dasc" - if (has_hash_entries) { - /*| jae >7 */ - dasm_put(Dst, 1961); -# 742 "upb/pb/compile_decoder_x64.dasc" - } else { - /*| jae >5 */ - dasm_put(Dst, 1966); -# 744 "upb/pb/compile_decoder_x64.dasc" - } - /*| // OPT: Compact the lookup arr into 32-bit entries. */ - if ((uintptr_t)dispatch->array > 0x7fffffff) { - /*| mov64 rax, (uintptr_t)dispatch->array */ - /*| mov rax, qword [rax + rdx * 8] */ - dasm_put(Dst, 1971, (unsigned int)((uintptr_t)dispatch->array), (unsigned int)(((uintptr_t)dispatch->array)>>32)); -# 749 "upb/pb/compile_decoder_x64.dasc" - } else { - /*| mov rax, qword [rdx * 8 + dispatch->array] */ - dasm_put(Dst, 1980, dispatch->array); -# 751 "upb/pb/compile_decoder_x64.dasc" - } - /*|3: */ - /*| // We take advantage of the fact that non-present entries are stored */ - /*| // as -1, which will result in wire types that will never match. */ - /*| cmp al, cl */ - dasm_put(Dst, 1986); -# 756 "upb/pb/compile_decoder_x64.dasc" - if (has_multi_wiretype) { - /*| jne >6 */ - dasm_put(Dst, 1991); -# 758 "upb/pb/compile_decoder_x64.dasc" - } else { - /*| jne >5 */ - dasm_put(Dst, 1996); -# 760 "upb/pb/compile_decoder_x64.dasc" - } - /*| shr rax, 16 */ - /*| */ - /*| // Load the machine code address from the table entry. */ - /*| // The table entry is relative to the dispatch->array jmptarget */ - /*| // (patchdispatch() took care of this) which is the same as */ - /*| // local label "4". The "lea" is really just trying to do */ - /*| // lea rax, [>4 + rax] */ - /*| // */ - /*| // But we can't write that directly for some reason, so we use */ - /*| // rdx as a temporary. */ - /*| lea rdx, [>4] */ - /*|=>define_jmptarget(jc, dispatch->array): */ - /*|4: */ - /*| add rax, rdx */ - /*| ret */ - /*| */ - /*|5: */ - /*| // Field isn't in our table. */ - /*| */ - /*| // For pushing unknown fields to the unknown field handler. */ - /*| mov64 rax, (uintptr_t)method->dest_handlers_ */ - /*| mov FRAME->sink.handlers, rax */ - /*| */ - /*| call ->parse_unknown */ - /*| test eax, eax // ENDGROUP? */ - /*| jz <1 */ - /*| lea rax, [>9] // ENDGROUP; Load address of OP_ENDMSG. */ - /*| ret */ - dasm_put(Dst, 2001, define_jmptarget(jc, dispatch->array), (unsigned int)((uintptr_t)method->dest_handlers_), (unsigned int)(((uintptr_t)method->dest_handlers_)>>32), Dt1(->sink.handlers)); -# 789 "upb/pb/compile_decoder_x64.dasc" - - if (has_multi_wiretype) { - /*|6: */ - /*| // Primary wire type didn't match, check secondary wire type. */ - /*| cmp ah, cl */ - /*| jne <5 */ - /*| // Secondary wire type is a match, look up fn + UPB_MAX_FIELDNUMBER. */ - /*| add rdx, UPB_MAX_FIELDNUMBER */ - /*| // This key will never be in the array part, so do a hash lookup. */ - dasm_put(Dst, 2043, UPB_MAX_FIELDNUMBER); -# 798 "upb/pb/compile_decoder_x64.dasc" - UPB_ASSERT(has_hash_entries); - /*| ld64 dispatch */ - { - uintptr_t v = (uintptr_t)dispatch; - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 800 "upb/pb/compile_decoder_x64.dasc" - /*| jmp ->hashlookup // Tail call. */ - dasm_put(Dst, 2056); -# 801 "upb/pb/compile_decoder_x64.dasc" - } - - if (has_hash_entries) { - /*|7: */ - /*| // Hash table lookup. */ - /*| ld64 dispatch */ - dasm_put(Dst, 2061); - { - uintptr_t v = (uintptr_t)dispatch; - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 807 "upb/pb/compile_decoder_x64.dasc" - /*| call ->hashlookup */ - /*| jmp <3 */ - dasm_put(Dst, 2064); -# 809 "upb/pb/compile_decoder_x64.dasc" - } -} - -static void jittag(jitcompiler *jc, uint64_t tag, int n, int ofs, - const upb_pbdecodermethod *method) { - /* Internally we parse unknown fields; if this runs us into DELIMEND we jump - * to the corresponding DELIMEND target (either msg end or repeated field - * end), which we find from the OP_CHECKDELIM which must have necessarily - * preceded us. */ - uint32_t last_instruction = *(jc->pc - 2); - int last_arg = (int32_t)last_instruction >> 8; - uint32_t *delimend = (jc->pc - 1) + last_arg; - const size_t ptr_words = sizeof(void*) / sizeof(uint32_t); - - UPB_ASSERT((last_instruction & 0xff) == OP_CHECKDELIM); - - if (getop(*(jc->pc - 1)) == OP_TAGN) { - jc->pc += ptr_words; - } - - /*| chkneob n, >1 */ - if (n == 1) { - dasm_put(Dst, 2072); - } else { - dasm_put(Dst, 2080, n); - } -# 830 "upb/pb/compile_decoder_x64.dasc" - - /*| // OPT: this is way too much fallback code to put here. */ - /*| // Reduce and/or move to a separate section to make better icache usage. */ - /*| ld64 tag */ - { - uintptr_t v = (uintptr_t)tag; - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 834 "upb/pb/compile_decoder_x64.dasc" - /*| call ->checktag_fallback */ - /*| cmp eax, DECODE_MISMATCH */ - /*| je >3 */ - /*| cmp eax, DECODE_EOF */ - /*| je =>jmptarget(jc, delimend) */ - /*| jmp >5 */ - dasm_put(Dst, 2096, DECODE_MISMATCH, DECODE_EOF, jmptarget(jc, delimend)); -# 840 "upb/pb/compile_decoder_x64.dasc" - - /*|1: */ - dasm_put(Dst, 112); -# 842 "upb/pb/compile_decoder_x64.dasc" - switch (n) { - case 1: - /*| cmp byte [PTR], tag */ - dasm_put(Dst, 2119, tag); -# 845 "upb/pb/compile_decoder_x64.dasc" - break; - case 2: - /*| cmp word [PTR], tag */ - dasm_put(Dst, 2123, tag); -# 848 "upb/pb/compile_decoder_x64.dasc" - break; - case 3: - /*| // OPT: Slightly more efficient code, but depends on an extra byte. */ - /*| // mov eax, dword [PTR] */ - /*| // shl eax, 8 */ - /*| // cmp eax, tag << 8 */ - /*| cmp word [PTR], (tag & 0xffff) */ - /*| jne >2 */ - /*| cmp byte [PTR + 2], (tag >> 16) */ - /*|2: */ - dasm_put(Dst, 2128, (tag & 0xffff), 2, (tag >> 16)); -# 858 "upb/pb/compile_decoder_x64.dasc" - break; - case 4: - /*| cmp dword [PTR], tag */ - dasm_put(Dst, 2143, tag); -# 861 "upb/pb/compile_decoder_x64.dasc" - break; - case 5: - /*| cmp dword [PTR], (tag & 0xffffffff) */ - /*| jne >3 */ - /*| cmp byte [PTR + 4], (tag >> 32) */ - dasm_put(Dst, 2147, (tag & 0xffffffff), 4, (tag >> 32)); -# 866 "upb/pb/compile_decoder_x64.dasc" - } - /*| je >4 */ - /*|3: */ - dasm_put(Dst, 2159); -# 869 "upb/pb/compile_decoder_x64.dasc" - if (ofs == 0) { - /*| call =>jmptarget(jc, &method->dispatch) */ - /*| test rax, rax */ - /*| jz =>jmptarget(jc, delimend) */ - /*| jmp rax */ - dasm_put(Dst, 2166, jmptarget(jc, &method->dispatch), jmptarget(jc, delimend)); -# 874 "upb/pb/compile_decoder_x64.dasc" - } else { - /*| jmp =>jmptarget(jc, jc->pc + ofs) */ - dasm_put(Dst, 2178, jmptarget(jc, jc->pc + ofs)); -# 876 "upb/pb/compile_decoder_x64.dasc" - } - /*|4: */ - /*| add PTR, n */ - /*|5: */ - dasm_put(Dst, 2182, n); -# 880 "upb/pb/compile_decoder_x64.dasc" -} - -/* Compile the bytecode to x64. */ -static void jitbytecode(jitcompiler *jc) { - upb_pbdecodermethod *method = NULL; - const upb_handlers *h = NULL; - for (jc->pc = jc->group->bytecode; jc->pc < jc->group->bytecode_end; ) { - int32_t instr = *jc->pc; - opcode op = instr & 0xff; - uint32_t arg = instr >> 8; - int32_t longofs = arg; - - if (op != OP_SETDISPATCH) { - /* Skipped for SETDISPATCH because it defines its own asmlabel for the - * dispatch code it emits. */ - asmlabel(jc, "0x%lx.%s", pcofs(jc), upb_pbdecoder_getopname(op)); - - /* Skipped for SETDISPATCH because it should point at the function - * prologue, not the dispatch function that is emitted first. - * TODO: optimize this to only define pclabels that are actually used. */ - /*|=>define_jmptarget(jc, jc->pc): */ - dasm_put(Dst, 0, define_jmptarget(jc, jc->pc)); -# 901 "upb/pb/compile_decoder_x64.dasc" - } - - jc->pc++; - - switch (op) { - case OP_STARTMSG: { - upb_func *startmsg = gethandler(h, UPB_STARTMSG_SELECTOR); - if (startmsg) { - /* bool startmsg(void *closure, const void *hd) */ - /*|1: */ - /*| mov ARG1_64, CLOSURE */ - /*| load_handler_data h, UPB_STARTMSG_SELECTOR */ - dasm_put(Dst, 2191); - { - uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, UPB_STARTMSG_SELECTOR); - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 913 "upb/pb/compile_decoder_x64.dasc" - /*| callp startmsg */ - dasm_put(Dst, 1793, (unsigned int)((uintptr_t)startmsg), (unsigned int)(((uintptr_t)startmsg)>>32), 0xfffffffffffffff0UL); -# 914 "upb/pb/compile_decoder_x64.dasc" - if (!alwaysok(h, UPB_STARTMSG_SELECTOR)) { - /*| test al, al */ - /*| jnz >2 */ - /*| call ->suspend */ - /*| jmp <1 */ - /*|2: */ - dasm_put(Dst, 2198); -# 920 "upb/pb/compile_decoder_x64.dasc" - } - } else { - /*| nop */ - dasm_put(Dst, 2214); -# 923 "upb/pb/compile_decoder_x64.dasc" - } - break; - } - case OP_ENDMSG: { - upb_func *endmsg = gethandler(h, UPB_ENDMSG_SELECTOR); - /*|9: */ - dasm_put(Dst, 2216); -# 929 "upb/pb/compile_decoder_x64.dasc" - if (endmsg) { - /* bool endmsg(void *closure, const void *hd, upb_status *status) */ - /*| mov ARG1_64, CLOSURE */ - /*| load_handler_data h, UPB_ENDMSG_SELECTOR */ - dasm_put(Dst, 1788); - { - uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, UPB_ENDMSG_SELECTOR); - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 933 "upb/pb/compile_decoder_x64.dasc" - /*| mov ARG3_64, DECODER->status */ - /*| callp endmsg */ - dasm_put(Dst, 2219, Dt2(->status), (unsigned int)((uintptr_t)endmsg), (unsigned int)(((uintptr_t)endmsg)>>32), 0xfffffffffffffff0UL); -# 935 "upb/pb/compile_decoder_x64.dasc" - } - break; - } - case OP_SETDISPATCH: { - uint32_t *op_pc = jc->pc - 1; - const char *msgname; - upb_inttable *dispatch; - - /* Load info for new method. */ - memcpy(&dispatch, jc->pc, sizeof(void*)); - jc->pc += sizeof(void*) / sizeof(uint32_t); - /* The OP_SETDISPATCH bytecode contains a pointer that is - * &method->dispatch; we want to go backwards and recover method. */ - method = - (void*)((char*)dispatch - offsetof(upb_pbdecodermethod, dispatch)); - /* May be NULL, in which case no handlers for this message will be found. - * OPT: we should do better by completely skipping the message in this - * case instead of parsing it field by field. We should also do the skip - * in the containing message's code. */ - h = method->dest_handlers_; - msgname = upb_msgdef_fullname(upb_handlers_msgdef(h)); - - /* Emit dispatch code for new method. */ - asmlabel(jc, "0x%lx.dispatch.%s", pcofs(jc), msgname); - jitdispatch(jc, method); - - /* Emit function prologue for new method. */ - asmlabel(jc, "0x%lx.parse.%s", pcofs(jc), msgname); - /*|=>define_jmptarget(jc, op_pc): */ - /*|=>define_jmptarget(jc, method): */ - /*| sub rsp, 8 */ - dasm_put(Dst, 2245, define_jmptarget(jc, op_pc), define_jmptarget(jc, method)); -# 966 "upb/pb/compile_decoder_x64.dasc" - - break; - } - case OP_PARSE_DOUBLE: - case OP_PARSE_FLOAT: - case OP_PARSE_INT64: - case OP_PARSE_UINT64: - case OP_PARSE_INT32: - case OP_PARSE_FIXED64: - case OP_PARSE_FIXED32: - case OP_PARSE_BOOL: - case OP_PARSE_UINT32: - case OP_PARSE_SFIXED32: - case OP_PARSE_SFIXED64: - case OP_PARSE_SINT32: - case OP_PARSE_SINT64: - jitprimitive(jc, op, h, arg); - break; - case OP_STARTSEQ: - case OP_STARTSUBMSG: - case OP_STARTSTR: { - upb_func *start = gethandler(h, arg); - if (start) { - /* void *startseq(void *closure, const void *hd) - * void *startsubmsg(void *closure, const void *hd) - * void *startstr(void *closure, const void *hd, size_t size_hint) */ - /*|1: */ - /*| mov ARG1_64, CLOSURE */ - /*| load_handler_data h, arg */ - dasm_put(Dst, 2191); - { - uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, arg); - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 995 "upb/pb/compile_decoder_x64.dasc" - if (op == OP_STARTSTR) { - /*| mov ARG3_64, DELIMEND */ - /*| sub ARG3_64, PTR */ - dasm_put(Dst, 2253); -# 998 "upb/pb/compile_decoder_x64.dasc" - } - /*| callp start */ - dasm_put(Dst, 1793, (unsigned int)((uintptr_t)start), (unsigned int)(((uintptr_t)start)>>32), 0xfffffffffffffff0UL); -# 1000 "upb/pb/compile_decoder_x64.dasc" - if (!alwaysok(h, arg)) { - /*| test rax, rax */ - /*| jnz >2 */ - /*| call ->suspend */ - /*| jmp <1 */ - /*|2: */ - dasm_put(Dst, 2261); -# 1006 "upb/pb/compile_decoder_x64.dasc" - } - /*| mov CLOSURE, rax */ - dasm_put(Dst, 2278); -# 1008 "upb/pb/compile_decoder_x64.dasc" - } else { - /* TODO: nop is only required because of asmlabel(). */ - /*| nop */ - dasm_put(Dst, 2214); -# 1011 "upb/pb/compile_decoder_x64.dasc" - } - break; - } - case OP_ENDSEQ: - case OP_ENDSUBMSG: - case OP_ENDSTR: { - upb_func *end = gethandler(h, arg); - if (end) { - /* bool endseq(void *closure, const void *hd) - * bool endsubmsg(void *closure, const void *hd) - * bool endstr(void *closure, const void *hd) */ - /*|1: */ - /*| mov ARG1_64, CLOSURE */ - /*| load_handler_data h, arg */ - dasm_put(Dst, 2191); - { - uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, arg); - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 1025 "upb/pb/compile_decoder_x64.dasc" - /*| callp end */ - dasm_put(Dst, 1793, (unsigned int)((uintptr_t)end), (unsigned int)(((uintptr_t)end)>>32), 0xfffffffffffffff0UL); -# 1026 "upb/pb/compile_decoder_x64.dasc" - if (!alwaysok(h, arg)) { - /*| test al, al */ - /*| jnz >2 */ - /*| call ->suspend */ - /*| jmp <1 */ - /*|2: */ - dasm_put(Dst, 2198); -# 1032 "upb/pb/compile_decoder_x64.dasc" - } - } else { - /* TODO: nop is only required because of asmlabel(). */ - /*| nop */ - dasm_put(Dst, 2214); -# 1036 "upb/pb/compile_decoder_x64.dasc" - } - break; - } - case OP_STRING: { - upb_func *str = gethandler(h, arg); - /*| cmp PTR, DELIMEND */ - /*| je >4 */ - /*|1: */ - /*| cmp PTR, DATAEND */ - /*| jne >2 */ - /*| call ->suspend */ - /*| jmp <1 */ - /*|2: */ - dasm_put(Dst, 2282); -# 1049 "upb/pb/compile_decoder_x64.dasc" - if (str) { - /* size_t str(void *closure, const void *hd, const char *str, - * size_t n) */ - /*| mov ARG1_64, CLOSURE */ - /*| load_handler_data h, arg */ - dasm_put(Dst, 1788); - { - uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, arg); - if (v > 0xffffffff) { - dasm_put(Dst, 446, (unsigned int)(v), (unsigned int)((v)>>32)); - } else if (v) { - dasm_put(Dst, 451, v); - } else { - dasm_put(Dst, 454); - } - } -# 1054 "upb/pb/compile_decoder_x64.dasc" - /*| mov ARG3_64, PTR */ - /*| mov ARG4_64, DATAEND */ - /*| sub ARG4_64, PTR */ - /*| mov ARG5_64, qword DECODER->handle */ - /*| callp str */ - /*| add PTR, rax */ - dasm_put(Dst, 2309, Dt2(->handle), (unsigned int)((uintptr_t)str), (unsigned int)(((uintptr_t)str)>>32), 0xfffffffffffffff0UL); -# 1060 "upb/pb/compile_decoder_x64.dasc" - if (!alwaysok(h, arg)) { - /*| cmp PTR, DATAEND */ - /*| je >3 */ - /*| call ->strret_fallback */ - /*|3: */ - dasm_put(Dst, 2347); -# 1065 "upb/pb/compile_decoder_x64.dasc" - } - } else { - /*| mov PTR, DATAEND */ - dasm_put(Dst, 2360); -# 1068 "upb/pb/compile_decoder_x64.dasc" - } - /*| cmp PTR, DELIMEND */ - /*| jne <1 */ - /*|4: */ - dasm_put(Dst, 2364); -# 1072 "upb/pb/compile_decoder_x64.dasc" - break; - } - case OP_PUSHTAGDELIM: - /*| mov FRAME->sink.closure, CLOSURE */ - /*| // This shouldn't need to be read, because tag-delimited fields */ - /*| // shouldn't have an OP_SETDELIM after them. But for the moment */ - /*| // non-packed repeated fields do OP_SETDELIM so they can share more */ - /*| // code with the packed code-path. If this is changed later, this */ - /*| // store can be removed. */ - /*| mov qword FRAME->end_ofs, 0 */ - /*| cmp FRAME, DECODER->limit */ - /*| je ->err */ - /*| add FRAME, sizeof(upb_pbdecoder_frame) */ - /*| mov dword FRAME->groupnum, arg */ - dasm_put(Dst, 2375, Dt1(->sink.closure), Dt1(->end_ofs), Dt2(->limit), sizeof(upb_pbdecoder_frame), Dt1(->groupnum), arg); -# 1086 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_PUSHLENDELIM: - /*| call ->pushlendelim */ - dasm_put(Dst, 2405); -# 1089 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_POP: - /*| sub FRAME, sizeof(upb_pbdecoder_frame) */ - /*| mov CLOSURE, FRAME->sink.closure */ - dasm_put(Dst, 2409, sizeof(upb_pbdecoder_frame), Dt1(->sink.closure)); -# 1093 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_SETDELIM: - /* OPT: experiment with testing vs old offset to optimize away. */ - /*| mov DATAEND, DECODER->end */ - /*| add DELIMEND, FRAME->end_ofs */ - /*| cmp DELIMEND, DECODER->buf */ - /*| jb >1 */ - /*| cmp DELIMEND, DATAEND */ - /*| ja >1 // OPT: try cmov. */ - /*| mov DATAEND, DELIMEND */ - /*|1: */ - dasm_put(Dst, 2419, Dt2(->end), Dt1(->end_ofs), Dt2(->buf)); -# 1104 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_SETBIGGROUPNUM: - /*| mov dword FRAME->groupnum, *jc->pc++ */ - dasm_put(Dst, 2399, Dt1(->groupnum), *jc->pc++); -# 1107 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_CHECKDELIM: - /*| cmp DELIMEND, PTR */ - /*| je =>jmptarget(jc, jc->pc + longofs) */ - dasm_put(Dst, 2449, jmptarget(jc, jc->pc + longofs)); -# 1111 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_CALL: - /*| call =>jmptarget(jc, jc->pc + longofs) */ - dasm_put(Dst, 2456, jmptarget(jc, jc->pc + longofs)); -# 1114 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_BRANCH: - /*| jmp =>jmptarget(jc, jc->pc + longofs); */ - dasm_put(Dst, 2178, jmptarget(jc, jc->pc + longofs)); -# 1117 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_RET: - /*|9: */ - /*| add rsp, 8 */ - /*| ret */ - dasm_put(Dst, 2459); -# 1122 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_TAG1: - jittag(jc, (arg >> 8) & 0xff, 1, (int8_t)arg, method); - break; - case OP_TAG2: - jittag(jc, (arg >> 8) & 0xffff, 2, (int8_t)arg, method); - break; - case OP_TAGN: { - uint64_t tag; - memcpy(&tag, jc->pc, 8); - jittag(jc, tag, arg >> 8, (int8_t)arg, method); - break; - } - case OP_DISPATCH: - /*| call =>jmptarget(jc, &method->dispatch) */ - dasm_put(Dst, 2456, jmptarget(jc, &method->dispatch)); -# 1137 "upb/pb/compile_decoder_x64.dasc" - break; - case OP_HALT: - UPB_ASSERT(false); - } - } - - asmlabel(jc, "eof"); - /*| nop */ - dasm_put(Dst, 2214); -# 1145 "upb/pb/compile_decoder_x64.dasc" -} |