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-rw-r--r--src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcstubs_x86_64_linux.cpp242
1 files changed, 242 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcstubs_x86_64_linux.cpp b/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcstubs_x86_64_linux.cpp
new file mode 100644
index 00000000..3381c48e
--- /dev/null
+++ b/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/unix/xptcstubs_x86_64_linux.cpp
@@ -0,0 +1,242 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (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.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org Code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// Implement shared vtbl methods.
+
+#include "xptcprivate.h"
+
+// The Linux/x86-64 ABI passes the first 6 integer parameters and the
+// first 8 floating point parameters in registers (rdi, rsi, rdx, rcx,
+// r8, r9 and xmm0-xmm7), no stack space is allocated for these by the
+// caller. The rest of the parameters are passed in the callers stack
+// area.
+
+const PRUint32 PARAM_BUFFER_COUNT = 16;
+const PRUint32 GPR_COUNT = 6;
+const PRUint32 FPR_COUNT = 8;
+
+// PrepareAndDispatch() is called by SharedStub() and calls the actual method.
+//
+// - 'args[]' contains the arguments passed on stack
+// - 'gpregs[]' contains the arguments passed in integer registers
+// - 'fpregs[]' contains the arguments passed in floating point registers
+//
+// The parameters are mapped into an array of type 'nsXPTCMiniVariant'
+// and then the method gets called.
+
+extern "C" nsresult
+PrepareAndDispatch(nsXPTCStubBase * self, PRUint32 methodIndex,
+ PRUint64 * args, PRUint64 * gpregs, double *fpregs)
+{
+ nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
+ nsXPTCMiniVariant* dispatchParams = NULL;
+ nsIInterfaceInfo* iface_info = NULL;
+ const nsXPTMethodInfo* info = NULL;
+ PRUint32 paramCount;
+ PRUint32 i;
+ nsresult result = NS_ERROR_FAILURE;
+
+ NS_ASSERTION(self,"no self");
+
+ self->GetInterfaceInfo(&iface_info);
+ NS_ASSERTION(iface_info,"no interface info");
+ if (!iface_info)
+ return NS_ERROR_UNEXPECTED;
+
+ iface_info->GetMethodInfo(PRUint16(methodIndex), &info);
+ NS_ASSERTION(info,"no method info");
+ if (!info)
+ return NS_ERROR_UNEXPECTED;
+
+ paramCount = info->GetParamCount();
+
+ // setup variant array pointer
+ if (paramCount > PARAM_BUFFER_COUNT)
+ dispatchParams = new nsXPTCMiniVariant[paramCount];
+ else
+ dispatchParams = paramBuffer;
+
+ NS_ASSERTION(dispatchParams,"no place for params");
+ if (!dispatchParams)
+ return NS_ERROR_OUT_OF_MEMORY;
+
+ PRUint64* ap = args;
+ PRUint32 nr_gpr = 1; // skip one GPR register for 'that'
+ PRUint32 nr_fpr = 0;
+ PRUint64 value;
+
+ for (i = 0; i < paramCount; i++) {
+ const nsXPTParamInfo& param = info->GetParam(i);
+ const nsXPTType& type = param.GetType();
+ nsXPTCMiniVariant* dp = &dispatchParams[i];
+
+ if (!param.IsOut() && type == nsXPTType::T_DOUBLE) {
+ if (nr_fpr < FPR_COUNT)
+ dp->val.d = fpregs[nr_fpr++];
+ else
+ dp->val.d = *(double*) ap++;
+ continue;
+ }
+ else if (!param.IsOut() && type == nsXPTType::T_FLOAT) {
+ if (nr_fpr < 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*) ap++;
+ else
+ dp->val.f = *(float*) ap++;
+ continue;
+ }
+ else {
+ if (nr_gpr < GPR_COUNT)
+ value = gpregs[nr_gpr++];
+ else
+ value = *ap++;
+ }
+
+ if (param.IsOut() || !type.IsArithmetic()) {
+ dp->val.p = (void*) value;
+ continue;
+ }
+
+ switch (type) {
+ case nsXPTType::T_I8: dp->val.i8 = (PRInt8) value; break;
+ case nsXPTType::T_I16: dp->val.i16 = (PRInt16) value; break;
+ case nsXPTType::T_I32: dp->val.i32 = (PRInt32) value; break;
+ case nsXPTType::T_I64: dp->val.i64 = (PRInt64) value; break;
+ case nsXPTType::T_U8: dp->val.u8 = (PRUint8) value; break;
+ case nsXPTType::T_U16: dp->val.u16 = (PRUint16) value; break;
+ case nsXPTType::T_U32: dp->val.u32 = (PRUint32) value; break;
+ case nsXPTType::T_U64: dp->val.u64 = (PRUint64) value; break;
+ case nsXPTType::T_BOOL: dp->val.b = (PRBool) value; break;
+ case nsXPTType::T_CHAR: dp->val.c = (char) value; break;
+ case nsXPTType::T_WCHAR: dp->val.wc = (wchar_t) value; break;
+
+ default:
+ NS_ASSERTION(0, "bad type");
+ break;
+ }
+ }
+
+ result = self->CallMethod((PRUint16) methodIndex, info, dispatchParams);
+
+ NS_RELEASE(iface_info);
+
+ if (dispatchParams != paramBuffer)
+ delete [] dispatchParams;
+
+ return result;
+}
+
+#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100 /* G++ V3 ABI */
+// Linux/x86-64 uses gcc >= 3.1
+#define STUB_ENTRY(n) \
+asm(".section \".text\"\n\t" \
+ ".align 2\n\t" \
+ ".if " #n " < 10\n\t" \
+ ".globl _ZN14nsXPTCStubBase5Stub" #n "Ev\n\t" \
+ ".type _ZN14nsXPTCStubBase5Stub" #n "Ev,@function\n" \
+ "_ZN14nsXPTCStubBase5Stub" #n "Ev:\n\t" \
+ ".elseif " #n " < 100\n\t" \
+ ".globl _ZN14nsXPTCStubBase6Stub" #n "Ev\n\t" \
+ ".type _ZN14nsXPTCStubBase6Stub" #n "Ev,@function\n" \
+ "_ZN14nsXPTCStubBase6Stub" #n "Ev:\n\t" \
+ ".elseif " #n " < 1000\n\t" \
+ ".globl _ZN14nsXPTCStubBase7Stub" #n "Ev\n\t" \
+ ".type _ZN14nsXPTCStubBase7Stub" #n "Ev,@function\n" \
+ "_ZN14nsXPTCStubBase7Stub" #n "Ev:\n\t" \
+ ".else\n\t" \
+ ".err \"stub number " #n " >= 1000 not yet supported\"\n\t" \
+ ".endif\n\t" \
+ "movl $" #n ", %eax\n\t" \
+ "jmp SharedStub\n\t" \
+ ".if " #n " < 10\n\t" \
+ ".size _ZN14nsXPTCStubBase5Stub" #n "Ev,.-_ZN14nsXPTCStubBase5Stub" #n "Ev\n\t" \
+ ".elseif " #n " < 100\n\t" \
+ ".size _ZN14nsXPTCStubBase6Stub" #n "Ev,.-_ZN14nsXPTCStubBase6Stub" #n "Ev\n\t" \
+ ".else\n\t" \
+ ".size _ZN14nsXPTCStubBase7Stub" #n "Ev,.-_ZN14nsXPTCStubBase7Stub" #n "Ev\n\t" \
+ ".endif");
+
+// static nsresult SharedStub(PRUint32 methodIndex)
+asm(".section \".text\"\n\t"
+ ".align 2\n\t"
+ ".type SharedStub,@function\n\t"
+ "SharedStub:\n\t"
+ // make room for gpregs (48), fpregs (64)
+ "pushq %rbp\n\t"
+ "movq %rsp,%rbp\n\t"
+ "subq $112,%rsp\n\t"
+ // save GP registers
+ "movq %rdi,-112(%rbp)\n\t"
+ "movq %rsi,-104(%rbp)\n\t"
+ "movq %rdx, -96(%rbp)\n\t"
+ "movq %rcx, -88(%rbp)\n\t"
+ "movq %r8 , -80(%rbp)\n\t"
+ "movq %r9 , -72(%rbp)\n\t"
+ "leaq -112(%rbp),%rcx\n\t"
+ // save FP registers
+ "movsd %xmm0,-64(%rbp)\n\t"
+ "movsd %xmm1,-56(%rbp)\n\t"
+ "movsd %xmm2,-48(%rbp)\n\t"
+ "movsd %xmm3,-40(%rbp)\n\t"
+ "movsd %xmm4,-32(%rbp)\n\t"
+ "movsd %xmm5,-24(%rbp)\n\t"
+ "movsd %xmm6,-16(%rbp)\n\t"
+ "movsd %xmm7, -8(%rbp)\n\t"
+ "leaq -64(%rbp),%r8\n\t"
+ // rdi has the 'self' pointer already
+ "movl %eax,%esi\n\t"
+ "leaq 16(%rbp),%rdx\n\t"
+ "call PrepareAndDispatch@plt\n\t"
+ "leave\n\t"
+ "ret\n\t"
+ ".size SharedStub,.-SharedStub");
+
+#define SENTINEL_ENTRY(n) \
+nsresult nsXPTCStubBase::Sentinel##n() \
+{ \
+ NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \
+ return NS_ERROR_NOT_IMPLEMENTED; \
+}
+
+#include "xptcstubsdef.inc"
+
+#else
+#error "Unsupported compiler. Use gcc >= 3.1 for Linux/x86-64."
+#endif /* __GNUC__ */
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