1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/reflect/xptcall/src/md/win32/xptcstubs_x86_64_gnu.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,297 @@
1.4 +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + *
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "xptcprivate.h"
1.11 +#include "xptiprivate.h"
1.12 +
1.13 +/*
1.14 + * This is for Windows 64 bit (x86_64) using GCC syntax
1.15 + * Code was copied from the MSVC version.
1.16 + */
1.17 +
1.18 +#if !defined(_AMD64_) || !defined(__GNUC__)
1.19 +# error xptcstubs_x86_64_gnu.cpp being used unexpectedly
1.20 +#endif
1.21 +
1.22 +extern "C" nsresult __attribute__((__used__))
1.23 +PrepareAndDispatch(nsXPTCStubBase * self, uint32_t methodIndex,
1.24 + uint64_t * args, uint64_t * gprData, double *fprData)
1.25 +{
1.26 +#define PARAM_BUFFER_COUNT 16
1.27 +//
1.28 +// "this" pointer is first parameter, so parameter count is 3.
1.29 +//
1.30 +#define PARAM_GPR_COUNT 3
1.31 +#define PARAM_FPR_COUNT 3
1.32 +
1.33 + nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
1.34 + nsXPTCMiniVariant* dispatchParams = nullptr;
1.35 + const nsXPTMethodInfo* info = nullptr;
1.36 + uint8_t paramCount;
1.37 + uint8_t i;
1.38 + nsresult result = NS_ERROR_FAILURE;
1.39 +
1.40 + NS_ASSERTION(self, "no self");
1.41 +
1.42 + self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);
1.43 + NS_ASSERTION(info, "no method info");
1.44 +
1.45 + paramCount = info->GetParamCount();
1.46 +
1.47 + //
1.48 + // setup variant array pointer
1.49 + //
1.50 +
1.51 + if(paramCount > PARAM_BUFFER_COUNT)
1.52 + dispatchParams = new nsXPTCMiniVariant[paramCount];
1.53 + else
1.54 + dispatchParams = paramBuffer;
1.55 +
1.56 + NS_ASSERTION(dispatchParams,"no place for params");
1.57 +
1.58 + uint64_t* ap = args;
1.59 + uint32_t iCount = 0;
1.60 +
1.61 + for(i = 0; i < paramCount; i++)
1.62 + {
1.63 + const nsXPTParamInfo& param = info->GetParam(i);
1.64 + const nsXPTType& type = param.GetType();
1.65 + nsXPTCMiniVariant* dp = &dispatchParams[i];
1.66 +
1.67 + if(param.IsOut() || !type.IsArithmetic())
1.68 + {
1.69 + if (iCount < PARAM_GPR_COUNT)
1.70 + dp->val.p = (void*)gprData[iCount++];
1.71 + else
1.72 + dp->val.p = (void*)*ap++;
1.73 +
1.74 + continue;
1.75 + }
1.76 + // else
1.77 + switch(type)
1.78 + {
1.79 + case nsXPTType::T_I8:
1.80 + if (iCount < PARAM_GPR_COUNT)
1.81 + dp->val.i8 = (int8_t)gprData[iCount++];
1.82 + else
1.83 + dp->val.i8 = *((int8_t*)ap++);
1.84 + break;
1.85 +
1.86 + case nsXPTType::T_I16:
1.87 + if (iCount < PARAM_GPR_COUNT)
1.88 + dp->val.i16 = (int16_t)gprData[iCount++];
1.89 + else
1.90 + dp->val.i16 = *((int16_t*)ap++);
1.91 + break;
1.92 +
1.93 + case nsXPTType::T_I32:
1.94 + if (iCount < PARAM_GPR_COUNT)
1.95 + dp->val.i32 = (int32_t)gprData[iCount++];
1.96 + else
1.97 + dp->val.i32 = *((int32_t*)ap++);
1.98 + break;
1.99 +
1.100 + case nsXPTType::T_I64:
1.101 + if (iCount < PARAM_GPR_COUNT)
1.102 + dp->val.i64 = (int64_t)gprData[iCount++];
1.103 + else
1.104 + dp->val.i64 = *((int64_t*)ap++);
1.105 + break;
1.106 +
1.107 + case nsXPTType::T_U8:
1.108 + if (iCount < PARAM_GPR_COUNT)
1.109 + dp->val.u8 = (uint8_t)gprData[iCount++];
1.110 + else
1.111 + dp->val.u8 = *((uint8_t*)ap++);
1.112 + break;
1.113 +
1.114 + case nsXPTType::T_U16:
1.115 + if (iCount < PARAM_GPR_COUNT)
1.116 + dp->val.u16 = (uint16_t)gprData[iCount++];
1.117 + else
1.118 + dp->val.u16 = *((uint16_t*)ap++);
1.119 + break;
1.120 +
1.121 + case nsXPTType::T_U32:
1.122 + if (iCount < PARAM_GPR_COUNT)
1.123 + dp->val.u32 = (uint32_t)gprData[iCount++];
1.124 + else
1.125 + dp->val.u32 = *((uint32_t*)ap++);
1.126 + break;
1.127 +
1.128 + case nsXPTType::T_U64:
1.129 + if (iCount < PARAM_GPR_COUNT)
1.130 + dp->val.u64 = (uint64_t)gprData[iCount++];
1.131 + else
1.132 + dp->val.u64 = *((uint64_t*)ap++);
1.133 + break;
1.134 +
1.135 + case nsXPTType::T_FLOAT:
1.136 + if (iCount < PARAM_FPR_COUNT)
1.137 + dp->val.f = (float)fprData[iCount++];
1.138 + else
1.139 + dp->val.f = *((float*)ap++);
1.140 + break;
1.141 +
1.142 + case nsXPTType::T_DOUBLE:
1.143 + if (iCount < PARAM_FPR_COUNT)
1.144 + dp->val.d = (double)fprData[iCount++];
1.145 + else
1.146 + dp->val.d = *((double*)ap++);
1.147 + break;
1.148 +
1.149 + case nsXPTType::T_BOOL:
1.150 + if (iCount < PARAM_GPR_COUNT)
1.151 + dp->val.b = (bool)gprData[iCount++];
1.152 + else
1.153 + dp->val.b = *((bool*)ap++);
1.154 + break;
1.155 +
1.156 + case nsXPTType::T_CHAR:
1.157 + if (iCount < PARAM_GPR_COUNT)
1.158 + dp->val.c = (char)gprData[iCount++];
1.159 + else
1.160 + dp->val.c = *((char*)ap++);
1.161 + break;
1.162 +
1.163 + case nsXPTType::T_WCHAR:
1.164 + if (iCount < PARAM_GPR_COUNT)
1.165 + dp->val.wc = (wchar_t)gprData[iCount++];
1.166 + else
1.167 + dp->val.wc = *((wchar_t*)ap++);
1.168 + break;
1.169 +
1.170 + default:
1.171 + NS_ASSERTION(0, "bad type");
1.172 + break;
1.173 + }
1.174 + }
1.175 +
1.176 + result = self->mOuter->CallMethod((uint16_t)methodIndex, info, dispatchParams);
1.177 +
1.178 + if(dispatchParams != paramBuffer)
1.179 + delete [] dispatchParams;
1.180 +
1.181 + return result;
1.182 +}
1.183 +
1.184 +__asm__ (
1.185 + ".text\n"
1.186 + ".intel_syntax noprefix\n" /* switch to Intel syntax to look like the MSVC assembly */
1.187 + ".globl SharedStub\n"
1.188 + ".def SharedStub ; .scl 3 ; .type 46 ; .endef \n"
1.189 + "SharedStub:\n"
1.190 + "sub rsp, 104\n"
1.191 +
1.192 + /* rcx is this pointer. Need backup for optimized build */
1.193 +
1.194 + "mov qword ptr [rsp+88], rcx\n"
1.195 +
1.196 + /*
1.197 + * fist 4 parameters (1st is "this" pointer) are passed in registers.
1.198 + */
1.199 +
1.200 + /* for floating value */
1.201 +
1.202 + "movsd qword ptr [rsp+64], xmm1\n"
1.203 + "movsd qword ptr [rsp+72], xmm2\n"
1.204 + "movsd qword ptr [rsp+80], xmm3\n"
1.205 +
1.206 + /* for integer value */
1.207 +
1.208 + "mov qword ptr [rsp+40], rdx\n"
1.209 + "mov qword ptr [rsp+48], r8\n"
1.210 + "mov qword ptr [rsp+56], r9\n"
1.211 +
1.212 + /*
1.213 + * Call PrepareAndDispatch function
1.214 + */
1.215 +
1.216 + /* 5th parameter (floating parameters) of PrepareAndDispatch */
1.217 +
1.218 + "lea r9, qword ptr [rsp+64]\n"
1.219 + "mov qword ptr [rsp+32], r9\n"
1.220 +
1.221 + /* 4th parameter (normal parameters) of PrepareAndDispatch */
1.222 +
1.223 + "lea r9, qword ptr [rsp+40]\n"
1.224 +
1.225 + /* 3rd parameter (pointer to args on stack) */
1.226 +
1.227 + "lea r8, qword ptr [rsp+40+104]\n"
1.228 +
1.229 + /* 2nd parameter (vtbl_index) */
1.230 +
1.231 + "mov rdx, r11\n"
1.232 +
1.233 + /* 1st parameter (this) (rcx) */
1.234 +
1.235 + "call PrepareAndDispatch\n"
1.236 +
1.237 + /* restore rcx */
1.238 +
1.239 + "mov rcx, qword ptr [rsp+88]\n"
1.240 +
1.241 + /*
1.242 + * clean up register
1.243 + */
1.244 +
1.245 + "add rsp, 104+8\n"
1.246 +
1.247 + /* set return address */
1.248 +
1.249 + "mov rdx, qword ptr [rsp-8]\n"
1.250 +
1.251 + /* simulate __stdcall return */
1.252 +
1.253 + "jmp rdx\n"
1.254 +
1.255 + /* back to AT&T syntax */
1.256 + ".att_syntax\n"
1.257 +);
1.258 +
1.259 +#define STUB_ENTRY(n) \
1.260 +asm(".intel_syntax noprefix\n" /* this is in intel syntax */ \
1.261 + ".text\n" \
1.262 + ".align 2\n" \
1.263 + ".if " #n " < 10\n" \
1.264 + ".globl _ZN14nsXPTCStubBase5Stub" #n "Ev@4\n" \
1.265 + ".def _ZN14nsXPTCStubBase5Stub" #n "Ev@4\n" \
1.266 + ".scl 3\n" /* private */ \
1.267 + ".type 46\n" /* function returning unsigned int */ \
1.268 + ".endef\n" \
1.269 + "_ZN14nsXPTCStubBase5Stub" #n "Ev@4:\n" \
1.270 + ".elseif " #n " < 100\n" \
1.271 + ".globl _ZN14nsXPTCStubBase6Stub" #n "Ev@4\n" \
1.272 + ".def _ZN14nsXPTCStubBase6Stub" #n "Ev@4\n" \
1.273 + ".scl 3\n" /* private */\
1.274 + ".type 46\n" /* function returning unsigned int */ \
1.275 + ".endef\n" \
1.276 + "_ZN14nsXPTCStubBase6Stub" #n "Ev@4:\n" \
1.277 + ".elseif " #n " < 1000\n" \
1.278 + ".globl _ZN14nsXPTCStubBase7Stub" #n "Ev@4\n" \
1.279 + ".def _ZN14nsXPTCStubBase7Stub" #n "Ev@4\n" \
1.280 + ".scl 3\n" /* private */ \
1.281 + ".type 46\n" /* function returning unsigned int */ \
1.282 + ".endef\n" \
1.283 + "_ZN14nsXPTCStubBase7Stub" #n "Ev@4:\n" \
1.284 + ".else\n" \
1.285 + ".err \"stub number " #n " >= 1000 not yet supported\"\n" \
1.286 + ".endif\n" \
1.287 + "mov r11, " #n "\n" \
1.288 + "jmp SharedStub\n" \
1.289 + ".att_syntax\n" /* back to AT&T syntax */ \
1.290 + "");
1.291 +
1.292 +#define SENTINEL_ENTRY(n) \
1.293 +nsresult nsXPTCStubBase::Sentinel##n() \
1.294 +{ \
1.295 + NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \
1.296 + return NS_ERROR_NOT_IMPLEMENTED; \
1.297 +}
1.298 +
1.299 +#include "xptcstubsdef.inc"
1.300 +
