--- /dev/null Wed Dec 31 16:00:00 1969
+++ xpcom/reflect/xptcall/src/md/unix/xptcinvoke_amd64_freebsd.cpp Thu Oct 16 22:59:43 2003
@@ -0,0 +1,174 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+// Platform specific code to invoke XPCOM methods on native objects
+
+#include "xptcprivate.h"
+
+// 6 integral parameters are passed in registers
+const PRUint32 GPR_COUNT = 6;
+
+// 8 floating point parameters are passed in SSE registers
+const PRUint32 FPR_COUNT = 8;
+
+// Remember that these 'words' are 64-bit long
+static inline void
+invoke_count_words(PRUint32 paramCount, nsXPTCVariant * s,
+ PRUint32 & nr_gpr, PRUint32 & nr_fpr, PRUint32 & nr_stack)
+{
+ nr_gpr = 1; // skip one GP register for 'that'
+ nr_fpr = 0;
+ nr_stack = 0;
+
+ /* Compute number of eightbytes of class MEMORY. */
+ for (uint32 i = 0; i < paramCount; i++, s++) {
+ if (!s->IsPtrData()
+ && (s->type == nsXPTType::T_FLOAT || s->type == nsXPTType::T_DOUBLE)) {
+ if (nr_fpr < FPR_COUNT)
+ nr_fpr++;
+ else
+ nr_stack++;
+ }
+ else {
+ if (nr_gpr < GPR_COUNT)
+ nr_gpr++;
+ else
+ nr_stack++;
+ }
+ }
+}
+
+static void
+invoke_copy_to_stack(PRUint64 * d, PRUint32 paramCount, nsXPTCVariant * s,
+ PRUint64 * gpregs, double * fpregs)
+{
+ PRUint32 nr_gpr = 1; // skip one GP register for 'that'
+ PRUint32 nr_fpr = 0;
+ PRUint64 value;
+
+ for (uint32 i = 0; i < paramCount; i++, s++) {
+ if (s->IsPtrData())
+ value = (PRUint64) s->ptr;
+ else {
+ switch (s->type) {
+ case nsXPTType::T_FLOAT: break;
+ case nsXPTType::T_DOUBLE: break;
+ case nsXPTType::T_I8: value = s->val.i8; break;
+ case nsXPTType::T_I16: value = s->val.i16; break;
+ case nsXPTType::T_I32: value = s->val.i32; break;
+ case nsXPTType::T_I64: value = s->val.i64; break;
+ case nsXPTType::T_U8: value = s->val.u8; break;
+ case nsXPTType::T_U16: value = s->val.u16; break;
+ case nsXPTType::T_U32: value = s->val.u32; break;
+ case nsXPTType::T_U64: value = s->val.u64; break;
+ case nsXPTType::T_BOOL: value = s->val.b; break;
+ case nsXPTType::T_CHAR: value = s->val.c; break;
+ case nsXPTType::T_WCHAR: value = s->val.wc; break;
+ default: value = (PRUint64) s->val.p; break;
+ }
+ }
+
+ if (!s->IsPtrData() && s->type == nsXPTType::T_DOUBLE) {
+ if (nr_fpr < FPR_COUNT)
+ fpregs[nr_fpr++] = s->val.d;
+ else {
+ *((double *)d) = s->val.d;
+ d++;
+ }
+ }
+ else if (!s->IsPtrData() && s->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.
+ fpregs[nr_fpr++] = s->val.d;
+ else {
+ *((float *)d) = s->val.f;
+ d++;
+ }
+ }
+ else {
+ if (nr_gpr < GPR_COUNT)
+ gpregs[nr_gpr++] = value;
+ else
+ *d++ = value;
+ }
+ }
+}
+
+extern "C"
+XPTC_PUBLIC_API(nsresult)
+XPTC_InvokeByIndex(nsISupports * that, PRUint32 methodIndex,
+ PRUint32 paramCount, nsXPTCVariant * params)
+{
+ PRUint32 nr_gpr, nr_fpr, nr_stack;
+ invoke_count_words(paramCount, params, nr_gpr, nr_fpr, nr_stack);
+
+ // Stack, if used, must be 16-bytes aligned
+ if (nr_stack)
+ nr_stack = (nr_stack + 1) & ~1;
+
+ // Load parameters to stack, if necessary
+ PRUint64 *stack = (PRUint64 *) __builtin_alloca(nr_stack * 8);
+ PRUint64 gpregs[GPR_COUNT];
+ double fpregs[FPR_COUNT];
+ invoke_copy_to_stack(stack, paramCount, params, gpregs, fpregs);
+
+ // Load FPR registers from fpregs[]
+ register double d0 asm("xmm0");
+ register double d1 asm("xmm1");
+ register double d2 asm("xmm2");
+ register double d3 asm("xmm3");
+ register double d4 asm("xmm4");
+ register double d5 asm("xmm5");
+ register double d6 asm("xmm6");
+ register double d7 asm("xmm7");
+
+ switch (nr_fpr) {
+#define ARG_FPR(N) \
+ case N+1: d##N = fpregs[N];
+ ARG_FPR(7);
+ ARG_FPR(6);
+ ARG_FPR(5);
+ ARG_FPR(4);
+ ARG_FPR(3);
+ ARG_FPR(2);
+ ARG_FPR(1);
+ ARG_FPR(0);
+ case 0:;
+#undef ARG_FPR
+ }
+
+ // Load GPR registers from gpregs[]
+ register PRUint64 a0 asm("rdi");
+ register PRUint64 a1 asm("rsi");
+ register PRUint64 a2 asm("rdx");
+ register PRUint64 a3 asm("rcx");
+ register PRUint64 a4 asm("r8");
+ register PRUint64 a5 asm("r9");
+
+ switch (nr_gpr) {
+#define ARG_GPR(N) \
+ case N+1: a##N = gpregs[N];
+ ARG_GPR(5);
+ ARG_GPR(4);
+ ARG_GPR(3);
+ ARG_GPR(2);
+ ARG_GPR(1);
+ case 1: a0 = (PRUint64) that;
+ case 0:;
+#undef ARG_GPR
+ }
+
+ // Ensure that assignments to SSE registers won't be optimized away
+ asm("" ::
+ "x" (d0), "x" (d1), "x" (d2), "x" (d3),
+ "x" (d4), "x" (d5), "x" (d6), "x" (d7));
+
+ // Get pointer to method
+ PRUint64 methodAddress = *((PRUint64 *)that);
+ methodAddress += 8 * methodIndex;
+ methodAddress = *((PRUint64 *)methodAddress);
+
+ typedef PRUint32 (*Method)(PRUint64, PRUint64, PRUint64, PRUint64, PRUint64, PRUint64);
+ PRUint32 result = ((Method)methodAddress)(a0, a1, a2, a3, a4, a5);
+ return result;
+}
--- /dev/null Wed Dec 31 16:00:00 1969
+++ xpcom/reflect/xptcall/src/md/unix/xptcstubs_amd64_freebsd.cpp Thu Oct 16 23:01:08 2003
@@ -0,0 +1,206 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+// Implement shared vtbl methods.
+
+#include "xptcprivate.h"
+
+// The Linux/x86-64 ABI passes the first 6 integral 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;
+ 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\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 "can't find a compiler to use"
+#endif /* __GNUC__ */
