Add m-esr52 at 52.6.0

1 files changed, 144 insertions, 0 deletions

diff --git a/xpcom/reflect/xptcall/md/unix/xptcinvoke_linux_alpha.cpp b/xpcom/reflect/xptcall/md/unix/xptcinvoke_linux_alpha.cpp
new file mode 100644
index 000000000..dc111e435
--- /dev/null
+++ b/xpcom/reflect/xptcall/md/unix/xptcinvoke_linux_alpha.cpp
@@ -0,0 +1,144 @@
+/* -*- 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/. */
+
+/* Platform specific code to invoke XPCOM methods on native objects */
+
+#include "xptcprivate.h"
+
+/* Prototype specifies unmangled function name and disables unused warning */
+static void
+invoke_copy_to_stack(uint64_t* d, uint32_t paramCount, nsXPTCVariant* s)
+__asm__("invoke_copy_to_stack") __attribute__((used));
+
+static void
+invoke_copy_to_stack(uint64_t* d, uint32_t paramCount, nsXPTCVariant* s)
+{
+    const uint8_t NUM_ARG_REGS = 6-1;        // -1 for "this" pointer
+
+    for(uint32_t i = 0; i < paramCount; i++, d++, s++)
+    {
+        if(s->IsPtrData())
+        {
+            *d = (uint64_t)s->ptr;
+            continue;
+        }
+        switch(s->type)
+        {
+        case nsXPTType::T_I8     : *d = (uint64_t)s->val.i8;     break;
+        case nsXPTType::T_I16    : *d = (uint64_t)s->val.i16;    break;
+        case nsXPTType::T_I32    : *d = (uint64_t)s->val.i32;    break;
+        case nsXPTType::T_I64    : *d = (uint64_t)s->val.i64;    break;
+        case nsXPTType::T_U8     : *d = (uint64_t)s->val.u8;     break;
+        case nsXPTType::T_U16    : *d = (uint64_t)s->val.u16;    break;
+        case nsXPTType::T_U32    : *d = (uint64_t)s->val.u32;    break;
+        case nsXPTType::T_U64    : *d = (uint64_t)s->val.u64;    break;
+        case nsXPTType::T_FLOAT  :
+            if(i < NUM_ARG_REGS)
+            {
+                // convert floats to doubles if they are to be passed
+                // via registers so we can just deal with doubles later
+                union { uint64_t u64; double d; } t;
+                t.d = (double)s->val.f;
+                *d = t.u64;
+            }
+            else
+                // otherwise copy to stack normally
+                *d = (uint64_t)s->val.u32;
+            break;
+        case nsXPTType::T_DOUBLE : *d = (uint64_t)s->val.u64;    break;
+        case nsXPTType::T_BOOL   : *d = (uint64_t)s->val.b;      break;
+        case nsXPTType::T_CHAR   : *d = (uint64_t)s->val.c;      break;
+        case nsXPTType::T_WCHAR  : *d = (uint64_t)s->val.wc;     break;
+        default:
+            // all the others are plain pointer types
+            *d = (uint64_t)s->val.p;
+            break;
+        }
+    }
+}
+
+/*
+ * EXPORT_XPCOM_API(nsresult)
+ * NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
+ *                  uint32_t paramCount, nsXPTCVariant* params)
+ */
+__asm__(
+    "#### NS_InvokeByIndex ####\n"
+".text\n\t"
+    ".align 5\n\t"
+    ".globl NS_InvokeByIndex\n\t"
+    ".ent NS_InvokeByIndex\n"
+"NS_InvokeByIndex:\n\t"
+    ".frame $15,32,$26,0\n\t"
+    ".mask 0x4008000,-32\n\t"
+    "ldgp $29,0($27)\n"
+"$NS_InvokeByIndex..ng:\n\t"
+    "subq $30,32,$30\n\t"
+    "stq $26,0($30)\n\t"
+    "stq $15,8($30)\n\t"
+    "bis $30,$30,$15\n\t"
+    ".prologue 1\n\t"
+
+    /*
+     * Allocate enough stack space to hold the greater of 6 or "paramCount"+1
+     * parameters. (+1 for "this" pointer)  Room for at least 6 parameters
+     * is required for storage of those passed via registers.
+     */
+
+    "bis $31,5,$2\n\t"      /* count = MAX(5, "paramCount") */
+    "cmplt $2,$18,$1\n\t"
+    "cmovne $1,$18,$2\n\t"
+    "s8addq $2,16,$1\n\t"   /* room for count+1 params (8 bytes each) */
+    "bic $1,15,$1\n\t"      /* stack space is rounded up to 0 % 16 */
+    "subq $30,$1,$30\n\t"
+
+    "stq $16,0($30)\n\t"    /* save "that" (as "this" pointer) */
+    "stq $17,16($15)\n\t"   /* save "methodIndex" */
+
+    "addq $30,8,$16\n\t"    /* pass stack pointer */
+    "bis $18,$18,$17\n\t"   /* pass "paramCount" */
+    "bis $19,$19,$18\n\t"   /* pass "params" */
+    "bsr $26,$invoke_copy_to_stack..ng\n\t"     /* call invoke_copy_to_stack */
+
+    /*
+     * Copy the first 6 parameters to registers and remove from stack frame.
+     * Both the integer and floating point registers are set for each parameter
+     * except the first which is the "this" pointer.  (integer only)
+     * The floating point registers are all set as doubles since the
+     * invoke_copy_to_stack function should have converted the floats.
+     */
+    "ldq $16,0($30)\n\t"    /* integer registers */
+    "ldq $17,8($30)\n\t"
+    "ldq $18,16($30)\n\t"
+    "ldq $19,24($30)\n\t"
+    "ldq $20,32($30)\n\t"
+    "ldq $21,40($30)\n\t"
+    "ldt $f17,8($30)\n\t"   /* floating point registers */
+    "ldt $f18,16($30)\n\t"
+    "ldt $f19,24($30)\n\t"
+    "ldt $f20,32($30)\n\t"
+    "ldt $f21,40($30)\n\t"
+
+    "addq $30,48,$30\n\t"   /* remove params from stack */
+
+    /*
+     * Call the virtual function with the constructed stack frame.
+     */
+    "bis $16,$16,$1\n\t"    /* load "this" */
+    "ldq $2,16($15)\n\t"    /* load "methodIndex" */
+    "ldq $1,0($1)\n\t"      /* load vtable */
+    "s8addq $2,$31,$2\n\t"  /* vtable index = "methodIndex" * 8 */
+    "addq $1,$2,$1\n\t"
+    "ldq $27,0($1)\n\t"     /* load address of function */
+    "jsr $26,($27),0\n\t"   /* call virtual function */
+    "ldgp $29,0($26)\n\t"
+
+    "bis $15,$15,$30\n\t"
+    "ldq $26,0($30)\n\t"
+    "ldq $15,8($30)\n\t"
+    "addq $30,32,$30\n\t"
+    "ret $31,($26),1\n\t"
+    ".end NS_InvokeByIndex"
+    );