summaryrefslogtreecommitdiffstats
path: root/xpcom/reflect/xptcall/md/win32/xptcstubs_x86_64_gnu.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'xpcom/reflect/xptcall/md/win32/xptcstubs_x86_64_gnu.cpp')
-rw-r--r--xpcom/reflect/xptcall/md/win32/xptcstubs_x86_64_gnu.cpp297
1 files changed, 297 insertions, 0 deletions
diff --git a/xpcom/reflect/xptcall/md/win32/xptcstubs_x86_64_gnu.cpp b/xpcom/reflect/xptcall/md/win32/xptcstubs_x86_64_gnu.cpp
new file mode 100644
index 0000000000..9c9d245c7f
--- /dev/null
+++ b/xpcom/reflect/xptcall/md/win32/xptcstubs_x86_64_gnu.cpp
@@ -0,0 +1,297 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "xptcprivate.h"
+
+/*
+ * This is for Windows 64 bit (x86_64) using GCC syntax
+ * Code was copied from the MSVC version.
+ */
+
+#if !defined(_AMD64_) || !defined(__GNUC__)
+# error xptcstubs_x86_64_gnu.cpp being used unexpectedly
+#endif
+
+extern "C" nsresult __attribute__((__used__))
+PrepareAndDispatch(nsXPTCStubBase * self, uint32_t methodIndex,
+ uint64_t * args, uint64_t * gprData, double *fprData)
+{
+//
+// "this" pointer is first parameter, so parameter count is 3.
+//
+#define PARAM_GPR_COUNT 3
+#define PARAM_FPR_COUNT 3
+
+ nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
+ const nsXPTMethodInfo* info = nullptr;
+ uint8_t paramCount;
+ uint8_t i;
+
+ NS_ASSERTION(self, "no self");
+
+ self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);
+ NS_ASSERTION(info, "no method info");
+
+ paramCount = info->GetParamCount();
+
+ //
+ // setup variant array pointer
+ //
+
+ const uint8_t indexOfJSContext = info->IndexOfJSContext();
+
+ uint64_t* ap = args;
+ uint32_t iCount = 0;
+
+ for(i = 0; i < paramCount; i++)
+ {
+ const nsXPTParamInfo& param = info->GetParam(i);
+ const nsXPTType& type = param.GetType();
+ nsXPTCMiniVariant* dp = &paramBuffer[i];
+
+ if (i == indexOfJSContext) {
+ if (iCount < PARAM_GPR_COUNT)
+ iCount++;
+ else
+ ap++;
+ }
+
+ if(param.IsOut() || !type.IsArithmetic())
+ {
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.p = (void*)gprData[iCount++];
+ else
+ dp->val.p = (void*)*ap++;
+
+ continue;
+ }
+ // else
+ switch(type)
+ {
+ case nsXPTType::T_I8:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.i8 = (int8_t)gprData[iCount++];
+ else
+ dp->val.i8 = *((int8_t*)ap++);
+ break;
+
+ case nsXPTType::T_I16:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.i16 = (int16_t)gprData[iCount++];
+ else
+ dp->val.i16 = *((int16_t*)ap++);
+ break;
+
+ case nsXPTType::T_I32:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.i32 = (int32_t)gprData[iCount++];
+ else
+ dp->val.i32 = *((int32_t*)ap++);
+ break;
+
+ case nsXPTType::T_I64:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.i64 = (int64_t)gprData[iCount++];
+ else
+ dp->val.i64 = *((int64_t*)ap++);
+ break;
+
+ case nsXPTType::T_U8:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.u8 = (uint8_t)gprData[iCount++];
+ else
+ dp->val.u8 = *((uint8_t*)ap++);
+ break;
+
+ case nsXPTType::T_U16:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.u16 = (uint16_t)gprData[iCount++];
+ else
+ dp->val.u16 = *((uint16_t*)ap++);
+ break;
+
+ case nsXPTType::T_U32:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.u32 = (uint32_t)gprData[iCount++];
+ else
+ dp->val.u32 = *((uint32_t*)ap++);
+ break;
+
+ case nsXPTType::T_U64:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.u64 = (uint64_t)gprData[iCount++];
+ else
+ dp->val.u64 = *((uint64_t*)ap++);
+ break;
+
+ case nsXPTType::T_FLOAT:
+ if (iCount < PARAM_FPR_COUNT)
+ // The value in xmm register is already prepared to
+ // be retrieved as a float. Therefore, we pass the
+ // value verbatim, as a double without conversion.
+ dp->val.d = (double)fprData[iCount++];
+ else
+ dp->val.f = *((float*)ap++);
+ break;
+
+ case nsXPTType::T_DOUBLE:
+ if (iCount < PARAM_FPR_COUNT)
+ dp->val.d = (double)fprData[iCount++];
+ else
+ dp->val.d = *((double*)ap++);
+ break;
+
+ case nsXPTType::T_BOOL:
+ if (iCount < PARAM_GPR_COUNT)
+ // We need the cast to uint8_t to remove garbage on upper 56-bit
+ // at first.
+ dp->val.b = (bool)(uint8_t)gprData[iCount++];
+ else
+ dp->val.b = *((bool*)ap++);
+ break;
+
+ case nsXPTType::T_CHAR:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.c = (char)gprData[iCount++];
+ else
+ dp->val.c = *((char*)ap++);
+ break;
+
+ case nsXPTType::T_WCHAR:
+ if (iCount < PARAM_GPR_COUNT)
+ dp->val.wc = (wchar_t)gprData[iCount++];
+ else
+ dp->val.wc = *((wchar_t*)ap++);
+ break;
+
+ default:
+ NS_ASSERTION(0, "bad type");
+ break;
+ }
+ }
+
+ nsresult result = self->mOuter->CallMethod((uint16_t)methodIndex, info,
+ paramBuffer);
+
+ return result;
+}
+
+__asm__ (
+ ".text\n"
+ ".intel_syntax noprefix\n" /* switch to Intel syntax to look like the MSVC assembly */
+ ".globl SharedStub\n"
+ ".def SharedStub ; .scl 3 ; .type 46 ; .endef \n"
+ "SharedStub:\n"
+ "sub rsp, 104\n"
+
+ /* rcx is this pointer. Need backup for optimized build */
+
+ "mov qword ptr [rsp+88], rcx\n"
+
+ /*
+ * fist 4 parameters (1st is "this" pointer) are passed in registers.
+ */
+
+ /* for floating value */
+
+ "movsd qword ptr [rsp+64], xmm1\n"
+ "movsd qword ptr [rsp+72], xmm2\n"
+ "movsd qword ptr [rsp+80], xmm3\n"
+
+ /* for integer value */
+
+ "mov qword ptr [rsp+40], rdx\n"
+ "mov qword ptr [rsp+48], r8\n"
+ "mov qword ptr [rsp+56], r9\n"
+
+ /*
+ * Call PrepareAndDispatch function
+ */
+
+ /* 5th parameter (floating parameters) of PrepareAndDispatch */
+
+ "lea r9, qword ptr [rsp+64]\n"
+ "mov qword ptr [rsp+32], r9\n"
+
+ /* 4th parameter (normal parameters) of PrepareAndDispatch */
+
+ "lea r9, qword ptr [rsp+40]\n"
+
+ /* 3rd parameter (pointer to args on stack) */
+
+ "lea r8, qword ptr [rsp+40+104]\n"
+
+ /* 2nd parameter (vtbl_index) */
+
+ "mov rdx, r11\n"
+
+ /* 1st parameter (this) (rcx) */
+
+ "call PrepareAndDispatch\n"
+
+ /* restore rcx */
+
+ "mov rcx, qword ptr [rsp+88]\n"
+
+ /*
+ * clean up register
+ */
+
+ "add rsp, 104+8\n"
+
+ /* set return address */
+
+ "mov rdx, qword ptr [rsp-8]\n"
+
+ /* simulate __stdcall return */
+
+ "jmp rdx\n"
+
+ /* back to AT&T syntax */
+ ".att_syntax\n"
+);
+
+#define STUB_ENTRY(n) \
+asm(".intel_syntax noprefix\n" /* this is in intel syntax */ \
+ ".text\n" \
+ ".align 2\n" \
+ ".if " #n " < 10\n" \
+ ".globl _ZN14nsXPTCStubBase5Stub" #n "Ev\n" \
+ ".def _ZN14nsXPTCStubBase5Stub" #n "Ev\n" \
+ ".scl 2\n" /* external */ \
+ ".type 46\n" /* function returning unsigned int */ \
+ ".endef\n" \
+ "_ZN14nsXPTCStubBase5Stub" #n "Ev:\n" \
+ ".elseif " #n " < 100\n" \
+ ".globl _ZN14nsXPTCStubBase6Stub" #n "Ev\n" \
+ ".def _ZN14nsXPTCStubBase6Stub" #n "Ev\n" \
+ ".scl 2\n" /* external */\
+ ".type 46\n" /* function returning unsigned int */ \
+ ".endef\n" \
+ "_ZN14nsXPTCStubBase6Stub" #n "Ev:\n" \
+ ".elseif " #n " < 1000\n" \
+ ".globl _ZN14nsXPTCStubBase7Stub" #n "Ev\n" \
+ ".def _ZN14nsXPTCStubBase7Stub" #n "Ev\n" \
+ ".scl 2\n" /* external */ \
+ ".type 46\n" /* function returning unsigned int */ \
+ ".endef\n" \
+ "_ZN14nsXPTCStubBase7Stub" #n "Ev:\n" \
+ ".else\n" \
+ ".err \"stub number " #n " >= 1000 not yet supported\"\n" \
+ ".endif\n" \
+ "mov r11, " #n "\n" \
+ "jmp SharedStub\n" \
+ ".att_syntax\n" /* back to AT&T syntax */ \
+ "");
+
+#define SENTINEL_ENTRY(n) \
+nsresult nsXPTCStubBase::Sentinel##n() \
+{ \
+ NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \
+ return NS_ERROR_NOT_IMPLEMENTED; \
+}
+
+#include "xptcstubsdef.inc"
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 16:58:55 +0000