diff options
author | Josh Haberman <jhaberman@gmail.com> | 2014-09-01 02:23:56 -0700 |
---|---|---|
committer | Josh Haberman <jhaberman@gmail.com> | 2014-09-01 02:23:56 -0700 |
commit | 3461a5113e5b131dfa7514308559f7e0f025e5a5 (patch) | |
tree | dd84b240529cfbbed64e8c2cdc7939c3f6c80331 /upb | |
parent | 6ed916653f67b93eba27e6594c0ff1b526de8ad9 (diff) |
Enable more Travis configurations.
Diffstat (limited to 'upb')
-rw-r--r-- | upb/pb/compile_decoder_x64.c | 2 | ||||
-rw-r--r-- | upb/pb/compile_decoder_x64.h | 1804 |
2 files changed, 1805 insertions, 1 deletions
diff --git a/upb/pb/compile_decoder_x64.c b/upb/pb/compile_decoder_x64.c index d8af013..44c4419 100644 --- a/upb/pb/compile_decoder_x64.c +++ b/upb/pb/compile_decoder_x64.c @@ -220,7 +220,7 @@ static bool try_getjmptarget(jitcompiler *jc, const void *key, int *pclabel) { // Gets the pclabel for this bytecode location's jmptarget. Requires that the // jmptarget() has been previously defined. static int getjmptarget(jitcompiler *jc, const void *key) { - int pclabel; + int pclabel = 0; assert(upb_inttable_lookupptr(&jc->jmpdefined, key, NULL)); bool ok = try_getjmptarget(jc, key, &pclabel); UPB_ASSERT_VAR(ok, ok); diff --git a/upb/pb/compile_decoder_x64.h b/upb/pb/compile_decoder_x64.h new file mode 100644 index 0000000..9787a57 --- /dev/null +++ b/upb/pb/compile_decoder_x64.h @@ -0,0 +1,1804 @@ +/* +** 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[1914] = { + 249,255,248,10,248,1,85,65,87,65,86,65,85,65,84,83,72,131,252,236,8,72,137, + 252,243,73,137,252,255,255,72,184,237,237,252,255,208,255,133,192,15,137, + 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, + 0,248,1,72,131,196,8,91,65,92,65,93,65,94,65,95,93,195,248,2,73,141,183,233, + 72,41,212,72,137,231,255,195,255,248,11,73,141,191,233,72,137,230,73,139, + 151,233,72,41,226,73,137,151,233,137,195,255,137,216,73,139,167,233,72,131, + 196,8,91,65,92,65,93,65,94,65,95,93,195,255,248,12,73,57,159,233,15,132,244, + 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, + 252,255,255,252,233,244,11,255,248,13,248,1,77,137,174,233,73,137,159,233, + 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, + 131,195,1,72,137,252,233,72,41,217,72,41,209,15,130,244,15,73,137,142,233, + 73,129,198,239,72,137,221,72,1,213,77,59,183,233,15,132,244,249,65,199,134, + 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, + 232,244,12,252,233,244,1,255,248,16,72,131,252,236,16,72,137,188,253,36,233, + 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, + 233,73,137,174,233,77,137,174,233,252,255,148,253,36,233,77,139,183,233,73, + 139,159,233,77,139,167,233,77,139,174,233,73,139,174,233,73,43,175,233,73, + 3,175,233,255,133,192,15,137,244,248,72,139,20,36,252,242,15,16,4,36,72,131, + 196,16,195,248,2,232,244,11,252,233,244,1,255,248,17,76,137,252,255,137,214, + 15,182,209,77,137,183,233,73,137,159,233,77,137,167,233,73,137,175,233,73, + 43,175,233,73,3,175,233,73,137,174,233,77,137,174,233,255,77,139,183,233, + 73,139,159,233,77,139,167,233,77,139,174,233,73,139,174,233,73,43,175,233, + 73,3,175,233,129,252,248,239,15,133,244,247,195,248,1,129,252,248,239,15, + 132,244,247,232,244,11,248,1,49,192,195,255,248,18,248,19,72,191,237,237, + 232,244,16,72,131,252,235,4,73,137,159,233,195,255,248,20,248,21,72,191,237, + 237,232,244,16,72,131,252,235,8,73,137,159,233,195,255,248,22,248,23,255, + 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, + 15,131,244,24,72,1,195,195,248,1,72,141,139,233,72,137,216,76,57,225,73,15, + 71,204,248,2,72,131,192,1,72,57,200,15,132,244,24,252,246,0,128,15,133,244, + 2,248,3,72,137,195,195,255,248,25,72,131,252,236,16,248,1,72,57,252,235,15, + 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, + 233,73,137,174,233,77,137,174,233,255,77,139,183,233,73,139,159,233,77,139, + 167,233,77,139,174,233,73,139,174,233,73,43,175,233,73,3,175,233,131,252, + 248,0,15,141,244,249,139,20,36,72,131,196,16,195,248,3,232,244,11,252,233, + 244,1,255,248,14,248,26,255,76,57,227,15,132,244,24,255,76,137,225,72,41, + 217,72,131,252,249,10,15,130,244,24,255,72,137,223,255,72,133,192,15,132, + 244,24,72,137,195,72,131,252,235,1,73,137,159,233,195,255,248,24,72,191,237, + 237,232,244,16,72,131,252,235,1,73,137,159,233,195,255,248,27,72,131,252, + 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, + 174,233,73,137,159,233,255,77,139,183,233,73,139,159,233,77,139,167,233,77, + 139,174,233,73,139,174,233,73,43,175,233,73,3,175,233,131,252,248,0,15,141, + 244,248,72,131,196,8,195,248,2,232,244,11,72,139,52,36,72,57,252,235,15,133, + 244,1,184,237,72,131,196,8,195,255,248,28,81,82,72,131,252,236,16,72,137, + 252,247,72,137,214,72,137,226,255,72,131,196,16,90,89,132,192,15,132,244, + 248,72,139,68,36,224,195,248,2,72,49,192,72,252,247,208,195,255,248,1,255, + 76,57,227,15,133,244,249,255,76,137,225,72,41,217,72,129,252,249,239,15,131, + 244,249,255,248,2,255,232,244,14,255,232,244,26,255,232,244,19,255,232,244, + 21,255,252,233,244,250,255,248,3,255,139,19,255,72,139,19,255,252,243,15, + 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, + 255,132,192,15,133,244,251,232,244,12,252,233,244,1,248,5,255,72,129,195, + 239,255,232,244,22,255,232,244,23,255,232,244,18,255,232,244,20,255,252,246, + 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, + 72,131,195,2,252,233,244,254,248,6,232,244,25,133,192,15,133,244,254,195, + 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, + 251,255,72,193,232,16,72,141,21,244,250,249,248,4,72,1,208,195,248,5,232, + 244,17,133,192,15,132,244,1,72,141,5,244,255,195,255,248,6,56,204,15,133, + 244,5,72,129,194,239,255,252,233,244,28,255,248,7,255,232,244,28,252,233, + 244,3,255,76,57,227,15,133,244,247,255,76,137,225,72,41,217,72,129,252,249, + 239,15,131,244,247,255,232,244,27,129,252,248,239,15,132,244,249,129,252, + 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, + 233,244,1,248,2,255,144,255,248,9,255,73,139,151,233,255,249,249,72,131,252, + 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, + 76,137,225,72,41,217,77,139,135,233,255,72,1,195,255,76,57,227,15,132,244, + 249,232,244,29,248,3,255,76,137,227,255,72,57,252,235,15,133,244,1,248,4, + 255,77,137,174,233,73,199,134,233,0,0,0,0,73,129,198,239,77,59,183,233,15, + 132,244,15,65,199,134,233,237,255,232,244,13,255,73,129,252,238,239,77,139, + 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_err, + UPB_JIT_GLOBAL_getvalue_slow, + 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__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", + "err", + "getvalue_slow", + "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", + (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 +//| +//| // OPT: use "call rel32" where possible. +//|.macro callp, addr +//|| { +//|| //int64_t ofs = (int64_t)addr - (int64_t)upb_status_init; +//|| //if (ofs > (1 << 30) || ofs < -(1 << 30)) { +//| mov64 rax, (uintptr_t)addr +//| call rax +//|| //} else { +//| // call &addr +//|| //} +//|| } +//|.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; + 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); +# 172 "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); + UPB_ASSERT_VAR(ok, ok); + bool 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 + //| + //| // Align stack. + //| // Since the JIT can call other functions (the JIT'ted code is not a leaf + //| // function) we must respect alignment rules. All x86-64 systems require + //| // 16-byte stack alignment. + //| sub rsp, 8 + //| + //| mov rbx, ARG2_64 // Preserve JIT method. + //| + //| mov DECODER, rdi + //| callp upb_pbdecoder_resume // Same args as us; reuse regs. + dasm_put(Dst, 2); + { + //int64_t ofs = (int64_t)upb_pbdecoder_resume - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)upb_pbdecoder_resume), (unsigned int)(((uintptr_t)upb_pbdecoder_resume)>>32)); + //} else { + //} + } +# 221 "upb/pb/compile_decoder_x64.dasc" + //| 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: + //| add rsp, 8 // Counter previous alignment. + //| pop rbx + //| pop r12 + //| pop r13 + //| pop r14 + //| pop r15 + //| pop rbp + //| ret + //| + //|2: + //| // Resume decoder. + //| lea ARG2_64, DECODER->callstack + //| sub rsp, ARG3_64 + //| mov ARG1_64, rsp + //| callp memcpy // Restore stack. + dasm_put(Dst, 38, 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), Dt2(->callstack)); + { + //int64_t ofs = (int64_t)memcpy - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)memcpy), (unsigned int)(((uintptr_t)memcpy)>>32)); + //} else { + //} + } +# 252 "upb/pb/compile_decoder_x64.dasc" + //| 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, 135); +# 258 "upb/pb/compile_decoder_x64.dasc" + asmlabel(jc, "exitjit"); + //|->exitjit: + //| // Save the stack into DECODER->callstack. + //| lea 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. + dasm_put(Dst, 137, Dt2(->callstack), Dt2(->saved_rsp), Dt2(->call_len)); + { + //int64_t ofs = (int64_t)memcpy - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)memcpy), (unsigned int)(((uintptr_t)memcpy)>>32)); + //} else { + //} + } +# 268 "upb/pb/compile_decoder_x64.dasc" + //| 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 + //| add rsp, 8 // Counter previous alignment. + //| 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, 160, Dt2(->saved_rsp)); +# 285 "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 + dasm_put(Dst, 182, 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)); + { + //int64_t ofs = (int64_t)upb_pbdecoder_suspend - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)upb_pbdecoder_suspend), (unsigned int)(((uintptr_t)upb_pbdecoder_suspend)>>32)); + //} else { + //} + } +# 294 "upb/pb/compile_decoder_x64.dasc" + //| jmp ->exitjit + //| + dasm_put(Dst, 235); +# 296 "upb/pb/compile_decoder_x64.dasc" + asmlabel(jc, "pushlendelim"); + //|->pushlendelim: + //|1: + //| mov FRAME->sink.closure, CLOSURE + //| mov DECODER->checkpoint, PTR + //| dv32 + dasm_put(Dst, 240, Dt1(->sink.closure), Dt2(->checkpoint)); + if (1 == 1) { + dasm_put(Dst, 253); + } else { + dasm_put(Dst, 261); + } +# 302 "upb/pb/compile_decoder_x64.dasc" + //| mov rcx, DELIMEND + //| sub rcx, PTR + //| sub rcx, rdx + //| jb ->err // Len is greater than enclosing message. + //| mov FRAME->end_ofs, rcx + //| add FRAME, sizeof(upb_pbdecoder_frame) + //| mov DELIMEND, PTR + //| add DELIMEND, rdx + //| cmp FRAME, DECODER->limit + //| je >3 // Stack overflow + //| 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, 277, Dt1(->end_ofs), sizeof(upb_pbdecoder_frame), Dt2(->limit), Dt1(->groupnum), Dt2(->end)); +# 321 "upb/pb/compile_decoder_x64.dasc" + //|2: + //| ret + //|3: + //| // Error -- call seterr. + //| mov PTR, DECODER->checkpoint // Rollback to before the delim len. + //| // Prepare seterr args. + //| mov ARG1_64, DECODER + //| ld64 kPbDecoderStackOverflow + dasm_put(Dst, 368, Dt2(->checkpoint)); + { + uintptr_t v = (uintptr_t)kPbDecoderStackOverflow; + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 329 "upb/pb/compile_decoder_x64.dasc" + //| callp upb_pbdecoder_seterr + { + //int64_t ofs = (int64_t)upb_pbdecoder_seterr - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)upb_pbdecoder_seterr), (unsigned int)(((uintptr_t)upb_pbdecoder_seterr)>>32)); + //} else { + //} + } +# 330 "upb/pb/compile_decoder_x64.dasc" + //| call ->suspend + //| jmp <1 + //| + //| // For getting a value that spans a buffer seam. Falls back to C. + //| // Args: rdi=C decoding function (prototype: int f(upb_pbdecoder*, void*)) + dasm_put(Dst, 398); +# 335 "upb/pb/compile_decoder_x64.dasc" + asmlabel(jc, "getvalue_slow"); + //|->getvalue_slow: + //| sub rsp, 16 // Stack is [8-byte value, 8-byte func pointer] + //| mov [rsp + 8], rdi // Need to preserve fptr across suspends. + //|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 + //| call aword [rsp + 8] + //| load_regs + //| test eax, eax + dasm_put(Dst, 406, 8, Dt2(->checkpoint), Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), 8, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs), Dt2(->bufstart_ofs), Dt2(->buf)); +# 348 "upb/pb/compile_decoder_x64.dasc" + //| jns >2 + //| // Success; return parsed data (in rdx AND xmm0). + //| mov rdx, [rsp] + //| movsd xmm0, qword [rsp] + //| add rsp, 16 + //| ret + //|2: + //| call ->exitjit // Return eax from decode function. + //| jmp <1 + //| + dasm_put(Dst, 507); +# 358 "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 + dasm_put(Dst, 538, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure)); + { + //int64_t ofs = (int64_t)upb_pbdecoder_skipunknown - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)upb_pbdecoder_skipunknown), (unsigned int)(((uintptr_t)upb_pbdecoder_skipunknown)>>32)); + //} else { + //} + } +# 368 "upb/pb/compile_decoder_x64.dasc" + //| load_regs + //| cmp eax, DECODE_ENDGROUP + //| jne >1 + //| 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, 582, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs), Dt2(->bufstart_ofs), Dt2(->buf), DECODE_ENDGROUP, DECODE_OK); +# 389 "upb/pb/compile_decoder_x64.dasc" + asmlabel(jc, "skip_decode_f32_fallback"); + //|->skipf32_fallback: + //|->decodef32_fallback: + //| mov64 rdi, (uintptr_t)upb_pbdecoder_decode_f32 + //| call ->getvalue_slow + //| sub PTR, 4 + //| mov DECODER->ptr, PTR + //| ret + //| + dasm_put(Dst, 638, (unsigned int)((uintptr_t)upb_pbdecoder_decode_f32), (unsigned int)(((uintptr_t)upb_pbdecoder_decode_f32)>>32), Dt2(->ptr)); +# 398 "upb/pb/compile_decoder_x64.dasc" + asmlabel(jc, "skip_decode_f64_fallback"); + //|->skipf64_fallback: + //|->decodef64_fallback: + //| mov64 rdi, (uintptr_t)upb_pbdecoder_decode_f64 + //| call ->getvalue_slow + //| sub PTR, 8 + //| mov DECODER->ptr, PTR + //| ret + //| + //| // Called for varint >= 1 byte. + dasm_put(Dst, 660, (unsigned int)((uintptr_t)upb_pbdecoder_decode_f64), (unsigned int)(((uintptr_t)upb_pbdecoder_decode_f64)>>32), Dt2(->ptr)); +# 408 "upb/pb/compile_decoder_x64.dasc" + asmlabel(jc, "skip_decode_v32_fallback"); + //|->skipv32_fallback: + //|->skipv64_fallback: + //| chkeob 16, >1 + dasm_put(Dst, 682); + if (16 == 1) { + dasm_put(Dst, 687); + } else { + dasm_put(Dst, 695); + } +# 412 "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 // rax = MIN(DATAEND, PTR + 10) + //|2: + //| add rax, 1 + //| cmp rax, rcx + //| je ->decode_varint_slow + //| test byte [rax], 0x80 + //| jnz <2 + //|3: + //| mov PTR, rax // PTR = varint_end - 1, as desired + //| ret + //| + //| // Returns tag in edx + dasm_put(Dst, 711, 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 + dasm_put(Dst, 780, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure)); + { + //int64_t ofs = (int64_t)upb_pbdecoder_decode_varint_slow - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)upb_pbdecoder_decode_varint_slow), (unsigned int)(((uintptr_t)upb_pbdecoder_decode_varint_slow)>>32)); + //} else { + //} + } +# 454 "upb/pb/compile_decoder_x64.dasc" + //| load_regs + //| 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, 846, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), 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, 900); + if (10 == 1) { + dasm_put(Dst, 905); + } else { + dasm_put(Dst, 913); + } +# 469 "upb/pb/compile_decoder_x64.dasc" + //| // OPT: do something faster than just calling the C version. + //| mov rdi, PTR + //| callp upb_vdecode_fast + dasm_put(Dst, 929); + { + //int64_t ofs = (int64_t)upb_vdecode_fast - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)upb_vdecode_fast), (unsigned int)(((uintptr_t)upb_vdecode_fast)>>32)); + //} else { + //} + } +# 472 "upb/pb/compile_decoder_x64.dasc" + //| test rax, rax + //| je ->decode_varint_slow // Unterminated varint. + //| mov PTR, rax + //| sub PTR, 1 + //| mov DECODER->ptr, PTR + //| ret + //| + dasm_put(Dst, 933, 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). + //| mov64 rdi, (uintptr_t)upb_pbdecoder_decode_varint_slow + //| call ->getvalue_slow + //| sub PTR, 1 + //| mov DECODER->ptr, PTR + //| ret + //| + //| // Args: rsi=expected tag, return=rax (DECODE_{OK,MISMATCH}) + dasm_put(Dst, 954, (unsigned int)((uintptr_t)upb_pbdecoder_decode_varint_slow), (unsigned int)(((uintptr_t)upb_pbdecoder_decode_varint_slow)>>32), Dt2(->ptr)); +# 489 "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 + dasm_put(Dst, 974, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt2(->delim_end), Dt2(->buf), Dt2(->bufstart_ofs), Dt1(->end_ofs), Dt1(->sink.closure), Dt2(->checkpoint)); + { + //int64_t ofs = (int64_t)upb_pbdecoder_checktag_slow - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)upb_pbdecoder_checktag_slow), (unsigned int)(((uintptr_t)upb_pbdecoder_checktag_slow)>>32)); + //} else { + //} + } +# 498 "upb/pb/compile_decoder_x64.dasc" + //| load_regs + //| 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, 1028, Dt2(->top), Dt2(->ptr), Dt2(->data_end), Dt1(->sink.closure), Dt1(->end_ofs), Dt2(->bufstart_ofs), Dt2(->buf), DECODE_EOF); +# 515 "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 + dasm_put(Dst, 1094); + { + //int64_t ofs = (int64_t)upb_inttable_lookup - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)upb_inttable_lookup), (unsigned int)(((uintptr_t)upb_inttable_lookup)>>32)); + //} else { + //} + } +# 524 "upb/pb/compile_decoder_x64.dasc" + //| 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, 1114); +# 535 "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 type = types[op]; + const int fastbytes = fastpath_bytes[type]; + upb_func *handler = gethandler(h, sel); + + if (handler) { + //|1: + //| chkneob fastbytes, >3 + dasm_put(Dst, 1143); + if (fastbytes == 1) { + dasm_put(Dst, 1146); + } else { + dasm_put(Dst, 1154, fastbytes); + } +# 551 "upb/pb/compile_decoder_x64.dasc" + //|2: + dasm_put(Dst, 1170); +# 552 "upb/pb/compile_decoder_x64.dasc" + switch (type) { + case V32: + //| call ->decodev32_fallback + dasm_put(Dst, 1173); +# 555 "upb/pb/compile_decoder_x64.dasc" + break; + case V64: + //| call ->decodev64_fallback + dasm_put(Dst, 1177); +# 558 "upb/pb/compile_decoder_x64.dasc" + break; + case F32: + //| call ->decodef32_fallback + dasm_put(Dst, 1181); +# 561 "upb/pb/compile_decoder_x64.dasc" + break; + case F64: + //| call ->decodef64_fallback + dasm_put(Dst, 1185); +# 564 "upb/pb/compile_decoder_x64.dasc" + break; + case X: break; + } + //| jmp >4 + dasm_put(Dst, 1189); +# 568 "upb/pb/compile_decoder_x64.dasc" + + // Fast path decode; for when check_bytes bytes are available. + //|3: + dasm_put(Dst, 1194); +# 571 "upb/pb/compile_decoder_x64.dasc" + switch (op) { + case OP_PARSE_SFIXED32: + case OP_PARSE_FIXED32: + //| mov edx, dword [PTR] + dasm_put(Dst, 1197); +# 575 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_PARSE_SFIXED64: + case OP_PARSE_FIXED64: + //| mov rdx, qword [PTR] + dasm_put(Dst, 1200); +# 579 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_PARSE_FLOAT: + //| movss xmm0, dword [PTR] + dasm_put(Dst, 1204); +# 582 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_PARSE_DOUBLE: + //| movsd xmm0, qword [PTR] + dasm_put(Dst, 1210); +# 585 "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, 1216); +# 591 "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, 1226); +# 597 "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, 1229); +# 605 "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, 1243); +# 613 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_PARSE_BOOL: + //| test rdx, rdx + //| setne dl + dasm_put(Dst, 1262); +# 617 "upb/pb/compile_decoder_x64.dasc" + break; + default: break; + } + + // Call callback (or specialize if we can). + upb_fieldtype_t type; + const upb_shim_data *data = upb_shim_getdata(h, sel, &type); + if (data) { + switch (type) { + case UPB_TYPE_INT64: + case UPB_TYPE_UINT64: + //| mov [CLOSURE + data->offset], rdx + dasm_put(Dst, 1269, data->offset); +# 629 "upb/pb/compile_decoder_x64.dasc" + break; + case UPB_TYPE_INT32: + case UPB_TYPE_UINT32: + case UPB_TYPE_ENUM: + //| mov [CLOSURE + data->offset], edx + dasm_put(Dst, 1274, data->offset); +# 634 "upb/pb/compile_decoder_x64.dasc" + break; + case UPB_TYPE_DOUBLE: + //| movsd qword [CLOSURE + data->offset], XMMARG1 + dasm_put(Dst, 1279, data->offset); +# 637 "upb/pb/compile_decoder_x64.dasc" + break; + case UPB_TYPE_FLOAT: + //| movss dword [CLOSURE + data->offset], XMMARG1 + dasm_put(Dst, 1287, data->offset); +# 640 "upb/pb/compile_decoder_x64.dasc" + break; + case UPB_TYPE_BOOL: + //| mov [CLOSURE + data->offset], dl + dasm_put(Dst, 1295, data->offset); +# 643 "upb/pb/compile_decoder_x64.dasc" + break; + case UPB_TYPE_STRING: + case UPB_TYPE_BYTES: + case UPB_TYPE_MESSAGE: + assert(false); break; + } + //| sethas CLOSURE, data->hasbit + if (data->hasbit >= 0) { + dasm_put(Dst, 1300, ((uint32_t)data->hasbit / 8), (1 << ((uint32_t)data->hasbit % 8))); + } +# 650 "upb/pb/compile_decoder_x64.dasc" + } else if (handler) { + //| mov ARG1_64, CLOSURE + //| load_handler_data h, sel + dasm_put(Dst, 1306); + { + uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, sel); + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 653 "upb/pb/compile_decoder_x64.dasc" + //| callp handler + { + //int64_t ofs = (int64_t)handler - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)handler), (unsigned int)(((uintptr_t)handler)>>32)); + //} else { + //} + } +# 654 "upb/pb/compile_decoder_x64.dasc" + if (!alwaysok(h, sel)) { + //| test al, al + //| jnz >5 + //| call ->suspend + //| jmp <1 + //|5: + dasm_put(Dst, 1311); +# 660 "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, 1327, fastbytes); +# 666 "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, 1146); + } else { + dasm_put(Dst, 1154, fastbytes); + } +# 669 "upb/pb/compile_decoder_x64.dasc" + //|2: + dasm_put(Dst, 1170); +# 670 "upb/pb/compile_decoder_x64.dasc" + switch (type) { + case V32: + //| call ->skipv32_fallback + dasm_put(Dst, 1332); +# 673 "upb/pb/compile_decoder_x64.dasc" + break; + case V64: + //| call ->skipv64_fallback + dasm_put(Dst, 1336); +# 676 "upb/pb/compile_decoder_x64.dasc" + break; + case F32: + //| call ->skipf32_fallback + dasm_put(Dst, 1340); +# 679 "upb/pb/compile_decoder_x64.dasc" + break; + case F64: + //| call ->skipf64_fallback + dasm_put(Dst, 1344); +# 682 "upb/pb/compile_decoder_x64.dasc" + break; + case X: break; + } + + // Fast-path skip. + //|3: + dasm_put(Dst, 1194); +# 688 "upb/pb/compile_decoder_x64.dasc" + if (type == V32 || type == V64) { + //| test byte [PTR], 0x80 + //| jnz <2 + dasm_put(Dst, 1348); +# 691 "upb/pb/compile_decoder_x64.dasc" + } + //| add PTR, fastbytes + dasm_put(Dst, 1327, fastbytes); +# 693 "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, 1357, define_jmptarget(jc, &method->dispatch)); +# 712 "upb/pb/compile_decoder_x64.dasc" + // Decode the field tag. + //| mov aword DECODER->checkpoint, PTR + //| chkeob 2, >6 + dasm_put(Dst, 248, Dt2(->checkpoint)); + if (2 == 1) { + dasm_put(Dst, 1361); + } else { + dasm_put(Dst, 1369); + } +# 715 "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, 1385, 1); +# 738 "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, 1450, dispatch->array_size); +# 743 "upb/pb/compile_decoder_x64.dasc" + if (has_hash_entries) { + //| jae >7 + dasm_put(Dst, 1457); +# 745 "upb/pb/compile_decoder_x64.dasc" + } else { + //| jae >5 + dasm_put(Dst, 1462); +# 747 "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, 1467, (unsigned int)((uintptr_t)dispatch->array), (unsigned int)(((uintptr_t)dispatch->array)>>32)); +# 752 "upb/pb/compile_decoder_x64.dasc" + } else { + //| mov rax, qword [rdx * 8 + dispatch->array] + dasm_put(Dst, 1476, dispatch->array); +# 754 "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, 1482); +# 759 "upb/pb/compile_decoder_x64.dasc" + if (has_multi_wiretype) { + //| jne >6 + dasm_put(Dst, 1487); +# 761 "upb/pb/compile_decoder_x64.dasc" + } else { + //| jne >5 + dasm_put(Dst, 1492); +# 763 "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. + //| call ->parse_unknown + //| test eax, eax // ENDGROUP? + //| jz <1 + //| lea rax, [>9] // ENDGROUP; Load address of OP_ENDMSG. + //| ret + dasm_put(Dst, 1497, define_jmptarget(jc, dispatch->array)); +# 787 "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, 1531, UPB_MAX_FIELDNUMBER); +# 796 "upb/pb/compile_decoder_x64.dasc" + assert(has_hash_entries); + //| ld64 dispatch + { + uintptr_t v = (uintptr_t)dispatch; + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 798 "upb/pb/compile_decoder_x64.dasc" + //| jmp ->hashlookup // Tail call. + dasm_put(Dst, 1544); +# 799 "upb/pb/compile_decoder_x64.dasc" + } + + if (has_hash_entries) { + //|7: + //| // Hash table lookup. + //| ld64 dispatch + dasm_put(Dst, 1549); + { + uintptr_t v = (uintptr_t)dispatch; + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 805 "upb/pb/compile_decoder_x64.dasc" + //| call ->hashlookup + //| jmp <3 + dasm_put(Dst, 1552); +# 807 "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; + assert((last_instruction & 0xff) == OP_CHECKDELIM); + uint32_t *delimend = (jc->pc - 1) + last_arg; + const size_t ptr_words = sizeof(void*) / sizeof(uint32_t); + + if (getop(*(jc->pc - 1)) == OP_TAGN) { + jc->pc += ptr_words; + } + + //| chkneob n, >1 + if (n == 1) { + dasm_put(Dst, 1560); + } else { + dasm_put(Dst, 1568, n); + } +# 827 "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, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 831 "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, 1584, DECODE_MISMATCH, DECODE_EOF, jmptarget(jc, delimend)); +# 837 "upb/pb/compile_decoder_x64.dasc" + + //|1: + dasm_put(Dst, 1143); +# 839 "upb/pb/compile_decoder_x64.dasc" + switch (n) { + case 1: + //| cmp byte [PTR], tag + dasm_put(Dst, 1607, tag); +# 842 "upb/pb/compile_decoder_x64.dasc" + break; + case 2: + //| cmp word [PTR], tag + dasm_put(Dst, 1611, tag); +# 845 "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, 1616, (tag & 0xffff), 2, (tag >> 16)); +# 855 "upb/pb/compile_decoder_x64.dasc" + break; + case 4: + //| cmp dword [PTR], tag + dasm_put(Dst, 1631, tag); +# 858 "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, 1635, (tag & 0xffffffff), 4, (tag >> 32)); +# 863 "upb/pb/compile_decoder_x64.dasc" + } + //| je >4 + //|3: + dasm_put(Dst, 1647); +# 866 "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, 1654, jmptarget(jc, &method->dispatch), jmptarget(jc, delimend)); +# 871 "upb/pb/compile_decoder_x64.dasc" + } else { + //| jmp =>jmptarget(jc, jc->pc + ofs) + dasm_put(Dst, 1666, jmptarget(jc, jc->pc + ofs)); +# 873 "upb/pb/compile_decoder_x64.dasc" + } + //|4: + //| add PTR, n + //|5: + dasm_put(Dst, 1670, n); +# 877 "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)); +# 898 "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, 1679); + { + uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, UPB_STARTMSG_SELECTOR); + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 910 "upb/pb/compile_decoder_x64.dasc" + //| callp startmsg + { + //int64_t ofs = (int64_t)startmsg - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)startmsg), (unsigned int)(((uintptr_t)startmsg)>>32)); + //} else { + //} + } +# 911 "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, 1686); +# 917 "upb/pb/compile_decoder_x64.dasc" + } + } else { + //| nop + dasm_put(Dst, 1702); +# 920 "upb/pb/compile_decoder_x64.dasc" + } + break; + } + case OP_ENDMSG: { + upb_func *endmsg = gethandler(h, UPB_ENDMSG_SELECTOR); + //|9: + dasm_put(Dst, 1704); +# 926 "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, 1306); + { + uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, UPB_ENDMSG_SELECTOR); + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 930 "upb/pb/compile_decoder_x64.dasc" + //| mov ARG3_64, DECODER->status + //| callp endmsg + dasm_put(Dst, 1707, Dt2(->status)); + { + //int64_t ofs = (int64_t)endmsg - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)endmsg), (unsigned int)(((uintptr_t)endmsg)>>32)); + //} else { + //} + } +# 932 "upb/pb/compile_decoder_x64.dasc" + } + break; + } + case OP_SETDISPATCH: { + uint32_t *op_pc = jc->pc - 1; + + // Load info for new method. + upb_inttable *dispatch; + 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_; + const char *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, 1712, define_jmptarget(jc, op_pc), define_jmptarget(jc, method)); +# 962 "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, 1679); + { + uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, arg); + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 991 "upb/pb/compile_decoder_x64.dasc" + if (op == OP_STARTSTR) { + //| mov ARG3_64, DELIMEND + //| sub ARG3_64, PTR + dasm_put(Dst, 1720); +# 994 "upb/pb/compile_decoder_x64.dasc" + } + //| callp start + { + //int64_t ofs = (int64_t)start - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)start), (unsigned int)(((uintptr_t)start)>>32)); + //} else { + //} + } +# 996 "upb/pb/compile_decoder_x64.dasc" + if (!alwaysok(h, arg)) { + //| test rax, rax + //| jnz >2 + //| call ->suspend + //| jmp <1 + //|2: + dasm_put(Dst, 1728); +# 1002 "upb/pb/compile_decoder_x64.dasc" + } + //| mov CLOSURE, rax + dasm_put(Dst, 1745); +# 1004 "upb/pb/compile_decoder_x64.dasc" + } else { + // TODO: nop is only required because of asmlabel(). + //| nop + dasm_put(Dst, 1702); +# 1007 "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, 1679); + { + uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, arg); + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 1021 "upb/pb/compile_decoder_x64.dasc" + //| callp end + { + //int64_t ofs = (int64_t)end - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)end), (unsigned int)(((uintptr_t)end)>>32)); + //} else { + //} + } +# 1022 "upb/pb/compile_decoder_x64.dasc" + if (!alwaysok(h, arg)) { + //| test al, al + //| jnz >2 + //| call ->suspend + //| jmp <1 + //|2: + dasm_put(Dst, 1686); +# 1028 "upb/pb/compile_decoder_x64.dasc" + } + } else { + // TODO: nop is only required because of asmlabel(). + //| nop + dasm_put(Dst, 1702); +# 1032 "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, 1749); +# 1045 "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, 1306); + { + uintptr_t v = (uintptr_t)upb_handlers_gethandlerdata(h, arg); + if (v > 0xffffffff) { + dasm_put(Dst, 386, (unsigned int)(v), (unsigned int)((v)>>32)); + } else if (v) { + dasm_put(Dst, 391, v); + } else { + dasm_put(Dst, 394); + } + } +# 1049 "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 + dasm_put(Dst, 1776, Dt2(->handle)); + { + //int64_t ofs = (int64_t)str - (int64_t)upb_status_init; + //if (ofs > (1 << 30) || ofs < -(1 << 30)) { + dasm_put(Dst, 30, (unsigned int)((uintptr_t)str), (unsigned int)(((uintptr_t)str)>>32)); + //} else { + //} + } +# 1054 "upb/pb/compile_decoder_x64.dasc" + //| add PTR, rax + dasm_put(Dst, 1790); +# 1055 "upb/pb/compile_decoder_x64.dasc" + if (!alwaysok(h, arg)) { + //| cmp PTR, DATAEND + //| je >3 + //| call ->strret_fallback + //|3: + dasm_put(Dst, 1794); +# 1060 "upb/pb/compile_decoder_x64.dasc" + } + } else { + //| mov PTR, DATAEND + dasm_put(Dst, 1807); +# 1063 "upb/pb/compile_decoder_x64.dasc" + } + //| cmp PTR, DELIMEND + //| jne <1 + //|4: + dasm_put(Dst, 1811); +# 1067 "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 + //| add FRAME, sizeof(upb_pbdecoder_frame) + //| cmp FRAME, DECODER->limit + //| je ->err + //| mov dword FRAME->groupnum, arg + dasm_put(Dst, 1822, Dt1(->sink.closure), Dt1(->end_ofs), sizeof(upb_pbdecoder_frame), Dt2(->limit), Dt1(->groupnum), arg); +# 1081 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_PUSHLENDELIM: + //| call ->pushlendelim + dasm_put(Dst, 1852); +# 1084 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_POP: + //| sub FRAME, sizeof(upb_pbdecoder_frame) + //| mov CLOSURE, FRAME->sink.closure + dasm_put(Dst, 1856, sizeof(upb_pbdecoder_frame), Dt1(->sink.closure)); +# 1088 "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, 1866, Dt2(->end), Dt1(->end_ofs), Dt2(->buf)); +# 1099 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_SETBIGGROUPNUM: + //| mov dword FRAME->groupnum, *jc->pc++ + dasm_put(Dst, 1846, Dt1(->groupnum), *jc->pc++); +# 1102 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_CHECKDELIM: + //| cmp DELIMEND, PTR + //| je =>jmptarget(jc, jc->pc + longofs) + dasm_put(Dst, 1896, jmptarget(jc, jc->pc + longofs)); +# 1106 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_CALL: + //| call =>jmptarget(jc, jc->pc + longofs) + dasm_put(Dst, 1903, jmptarget(jc, jc->pc + longofs)); +# 1109 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_BRANCH: + //| jmp =>jmptarget(jc, jc->pc + longofs); + dasm_put(Dst, 1666, jmptarget(jc, jc->pc + longofs)); +# 1112 "upb/pb/compile_decoder_x64.dasc" + break; + case OP_RET: + //|9: + //| add rsp, 8 + //| ret + dasm_put(Dst, 1906); +# 1117 "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_HALT: + assert(false); + } + } + + asmlabel(jc, "eof"); + //| nop + dasm_put(Dst, 1702); +# 1137 "upb/pb/compile_decoder_x64.dasc" +} |