From 7dca0ec25c2f3c57717247fd4431b8c3b21f0f4a Mon Sep 17 00:00:00 2001
From: Dan Horák <dan@danny.cz>
Date: Thu, 1 Nov 2018 23:07:50 +0100
Subject: Fix crash during start on ppc64le (rhbz#1643729)

---
 firefox.spec          |  2 ++
 mozilla-1498938.patch | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 mozilla-1498938.patch

diff --git a/firefox.spec b/firefox.spec
index c375334..0d9d5d4 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -126,6 +126,7 @@ Patch41:        build-disable-elfhack.patch
 Patch42:        prio-nss-build.patch
 Patch43:        mozilla-1500366.patch
 Patch44:        mozilla-1494037.patch
+Patch45:        mozilla-1498938.patch
 
 # Fedora specific patches
 Patch215:        firefox-enable-addons.patch
@@ -333,6 +334,7 @@ This package contains results of tests executed during build.
 %patch42 -p1 -b .nss-build
 %patch43 -p1 -b .1500366
 %patch44 -p1 -b .1494037
+%patch45 -p1 -b .1498938
 
 # Fedora patches
 %patch215 -p1 -b .addons
diff --git a/mozilla-1498938.patch b/mozilla-1498938.patch
new file mode 100644
index 0000000..9748670
--- /dev/null
+++ b/mozilla-1498938.patch
@@ -0,0 +1,93 @@
+
+# HG changeset patch
+# User A. Wilcox <AWilcox@Wilcox-Tech.com>
+# Date 1539817971 0
+# Node ID 06e5a5bfd05ef276dce035af837f2ba76e9a55a4
+# Parent  0ef00ee6c5312035280635f06e4790abd8b13729
+Bug 1498938 - Support [implicit_jscontext] XPIDL calls on Linux/PPC64.; r=froydnj
+
+diff --git a/xpcom/reflect/xptcall/md/unix/xptcstubs_ppc64_linux.cpp b/xpcom/reflect/xptcall/md/unix/xptcstubs_ppc64_linux.cpp
+--- a/xpcom/reflect/xptcall/md/unix/xptcstubs_ppc64_linux.cpp
++++ b/xpcom/reflect/xptcall/md/unix/xptcstubs_ppc64_linux.cpp
+@@ -61,43 +61,52 @@ PrepareAndDispatch(nsXPTCStubBase* self,
+ 
+     NS_ASSERTION(dispatchParams,"no place for params");
+     if (! dispatchParams)
+         return NS_ERROR_OUT_OF_MEMORY;
+ 
+     const uint8_t indexOfJSContext = info->IndexOfJSContext();
+ 
+     uint64_t* ap = args;
++    uint32_t iCount = 0;
++    uint32_t fpCount = 0;
+     uint64_t tempu64;
+ 
+     for(i = 0; i < paramCount; i++) {
+         const nsXPTParamInfo& param = info->GetParam(i);
+         const nsXPTType& type = param.GetType();
+         nsXPTCMiniVariant* dp = &dispatchParams[i];
+ 
+-        MOZ_CRASH("NYI: support implicit JSContext*, bug 1475699");
++        if (i == indexOfJSContext) {
++            if (iCount < GPR_COUNT)
++                iCount++;
++            else
++                ap++;
++        }
+ 
+         if (!param.IsOut() && type == nsXPTType::T_DOUBLE) {
+-            if (i < FPR_COUNT)
+-                dp->val.d = fprData[i];
++            if (fpCount < FPR_COUNT) {
++                dp->val.d = fprData[fpCount++];
++            }
+             else
+                 dp->val.d = *(double*) ap;
+         } else if (!param.IsOut() && type == nsXPTType::T_FLOAT) {
+-            if (i < FPR_COUNT)
+-                dp->val.f = (float) fprData[i]; // in registers floats are passed as doubles
++            if (fpCount < FPR_COUNT) {
++                dp->val.f = (float) fprData[fpCount++]; // in registers floats are passed as doubles
++            }
+             else {
+                 float *p = (float *)ap;
+ #ifndef __LITTLE_ENDIAN__
+                 p++;
+ #endif
+                 dp->val.f = *p;
+             }
+         } else { /* integer type or pointer */
+-            if (i < GPR_COUNT)
+-                tempu64 = gprData[i];
++            if (iCount < GPR_COUNT)
++                tempu64 = gprData[iCount];
+             else
+                 tempu64 = *ap;
+ 
+             if (param.IsOut() || !type.IsArithmetic())
+                 dp->val.p = (void*) tempu64;
+             else if (type == nsXPTType::T_I8)
+                 dp->val.i8  = (int8_t)   tempu64;
+             else if (type == nsXPTType::T_I16)
+@@ -119,17 +128,19 @@ PrepareAndDispatch(nsXPTCStubBase* self,
+             else if (type == nsXPTType::T_CHAR)
+                 dp->val.c   = (char)     tempu64;
+             else if (type == nsXPTType::T_WCHAR)
+                 dp->val.wc  = (wchar_t)  tempu64;
+             else
+                 NS_ERROR("bad type");
+         }
+ 
+-        if (i >= 7)
++        if (iCount < GPR_COUNT)
++            iCount++;  // gprs are skipped for fp args, so this always needs inc
++        else
+             ap++;
+     }
+ 
+     nsresult result = self->mOuter->CallMethod((uint16_t) methodIndex, info,
+                                                dispatchParams);
+ 
+     if (dispatchParams != paramBuffer)
+         delete [] dispatchParams;
+
-- 
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