use libco instead of state-thread(st), still have some bug

trunk/3rdparty/libco/coctx.cpp

@@ -0,0 +1,132 @@
+/*
+* Tencent is pleased to support the open source community by making Libco
+available.
+
+* Copyright (C) 2014 THL A29 Limited, a Tencent company. All rights reserved.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*	http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "coctx.h"
+#include <stdio.h>
+#include <string.h>
+
+#define ESP 0
+#define EIP 1
+#define EAX 2
+#define ECX 3
+// -----------
+#define RSP 0
+#define RIP 1
+#define RBX 2
+#define RDI 3
+#define RSI 4
+
+#define RBP 5
+#define R12 6
+#define R13 7
+#define R14 8
+#define R15 9
+#define RDX 10
+#define RCX 11
+#define R8 12
+#define R9 13
+
+//----- --------
+// 32 bit
+// | regs[0]: ret |
+// | regs[1]: ebx |
+// | regs[2]: ecx |
+// | regs[3]: edx |
+// | regs[4]: edi |
+// | regs[5]: esi |
+// | regs[6]: ebp |
+// | regs[7]: eax |  = esp
+enum {
+  kEIP = 0,
+  kEBP = 6,
+  kESP = 7,
+};
+
+//-------------
+// 64 bit
+// low | regs[0]: r15 |
+//    | regs[1]: r14 |
+//    | regs[2]: r13 |
+//    | regs[3]: r12 |
+//    | regs[4]: r9  |
+//    | regs[5]: r8  |
+//    | regs[6]: rbp |
+//    | regs[7]: rdi |
+//    | regs[8]: rsi |
+//    | regs[9]: ret |  //ret func addr
+//    | regs[10]: rdx |
+//    | regs[11]: rcx |
+//    | regs[12]: rbx |
+// hig | regs[13]: rsp |
+enum {
+  kRDI = 7,
+  kRSI = 8,
+  kRETAddr = 9,
+  kRSP = 13,
+};
+
+// 64 bit
+extern "C" {
+extern void coctx_swap(coctx_t*, coctx_t*) asm("coctx_swap");
+};
+#if defined(__i386__)
+int coctx_init(coctx_t* ctx) {
+  memset(ctx, 0, sizeof(*ctx));
+  return 0;
+}
+int coctx_make(coctx_t* ctx, coctx_pfn_t pfn, const void* s, const void* s1) {
+  // make room for coctx_param
+  char* sp = ctx->ss_sp + ctx->ss_size - sizeof(coctx_param_t);
+  sp = (char*)((unsigned long)sp & -16L);
+
+  coctx_param_t* param = (coctx_param_t*)sp;
+  void** ret_addr = (void**)(sp - sizeof(void*) * 2);
+  *ret_addr = (void*)pfn;
+  param->s1 = s;
+  param->s2 = s1;
+
+  memset(ctx->regs, 0, sizeof(ctx->regs));
+
+  ctx->regs[kESP] = (char*)(sp) - sizeof(void*) * 2;
+  return 0;
+}
+#elif defined(__x86_64__)
+int coctx_make(coctx_t* ctx, coctx_pfn_t pfn, const void* s, const void* s1) {
+  char* sp = ctx->ss_sp + ctx->ss_size - sizeof(void*);
+  sp = (char*)((unsigned long)sp & -16LL);
+
+  memset(ctx->regs, 0, sizeof(ctx->regs));
+  void** ret_addr = (void**)(sp);
+  *ret_addr = (void*)pfn;
+
+  ctx->regs[kRSP] = sp;
+
+  ctx->regs[kRETAddr] = (char*)pfn;
+
+  ctx->regs[kRDI] = (char*)s;
+  ctx->regs[kRSI] = (char*)s1;
+  return 0;
+}
+
+int coctx_init(coctx_t* ctx) {
+  memset(ctx, 0, sizeof(*ctx));
+  return 0;
+}
+
+#endif