--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mozilla-aarch64-bmo-963024.patch Sun Apr 13 16:54:09 2014 +0200
@@ -0,0 +1,517 @@
+
+# HG changeset patch
+# User Marcin Juszkiewicz <mjuszkiewicz@redhat.com>
+# Date 1393440196 18000
+# Node ID d56b5c1a557348d4ac14a4d1ea7a5b5d240e3647
+# Parent 6a46f53ad944b44385398822d7bcf7621a785d91
+Bug 963024 - AArch64 support for XPCOM. r=froydnj
+
+diff --git a/xpcom/reflect/xptcall/src/md/unix/moz.build b/xpcom/reflect/xptcall/src/md/unix/moz.build
+--- a/xpcom/reflect/xptcall/src/md/unix/moz.build
++++ b/xpcom/reflect/xptcall/src/md/unix/moz.build
+@@ -144,16 +144,23 @@ if CONFIG['OS_ARCH'] == 'NetBSD':
+ if CONFIG['OS_TEST'] in ('amiga', 'atari', 'hp300', 'mac68k', 'mvme68k',
+ 'next68k', 'sun3', 'sun3x', 'x68k'):
+ SOURCES += [
+ 'xptcinvoke_netbsd_m68k.cpp',
+ 'xptcstubs_netbsd_m68k.cpp'
+ ]
+
+ if CONFIG['OS_ARCH'] == 'Linux':
++ if CONFIG['OS_TEST'] == 'aarch64':
++ SOURCES += [
++ 'xptcinvoke_aarch64.cpp',
++ 'xptcinvoke_asm_aarch64.s',
++ 'xptcstubs_aarch64.cpp',
++ 'xptcstubs_asm_aarch64.s',
++ ]
+ if CONFIG['OS_TEST'] == 'm68k':
+ SOURCES += [
+ 'xptcinvoke_linux_m68k.cpp',
+ 'xptcstubs_linux_m68k.cpp',
+ ]
+ if CONFIG['OS_TEST'].find('mips') != -1:
+ if CONFIG['OS_TEST'].find('mips64') != -1:
+ SOURCES += [
+diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_aarch64.cpp b/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_aarch64.cpp
+new file mode 100644
+--- /dev/null
++++ b/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_aarch64.cpp
+@@ -0,0 +1,136 @@
++/* -*- 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"
++
++#if !defined(__aarch64__)
++#error "This code is for Linux AArch64 only."
++#endif
++
++
++/* "Procedure Call Standard for the ARM 64-bit Architecture" document, sections
++ * "5.4 Parameter Passing" and "6.1.2 Procedure Calling" contain all the
++ * needed information.
++ *
++ * http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042d/IHI0042D_aapcs.pdf
++ */
++
++#ifndef __AARCH64EL__
++#error "Only little endian compatibility was tested"
++#endif
++
++/*
++ * Allocation of integer function arguments initially to registers r1-r7
++ * and then to stack. Handling of 'that' argument which goes to register r0
++ * is handled separately and does not belong here.
++ *
++ * 'ireg_args' - pointer to the current position in the buffer,
++ * corresponding to the register arguments
++ * 'stack_args' - pointer to the current position in the buffer,
++ * corresponding to the arguments on stack
++ * 'end' - pointer to the end of the registers argument
++ * buffer.
++ */
++static inline void alloc_word(uint64_t* &ireg_args,
++ uint64_t* &stack_args,
++ uint64_t* end,
++ uint64_t data)
++{
++ if (ireg_args < end) {
++ *ireg_args = data;
++ ireg_args++;
++ } else {
++ *stack_args = data;
++ stack_args++;
++ }
++}
++
++static inline void alloc_double(double* &freg_args,
++ uint64_t* &stack_args,
++ double* end,
++ double data)
++{
++ if (freg_args < end) {
++ *freg_args = data;
++ freg_args++;
++ } else {
++ memcpy(stack_args, &data, sizeof(data));
++ stack_args++;
++ }
++}
++
++static inline void alloc_float(double* &freg_args,
++ uint64_t* &stack_args,
++ double* end,
++ float data)
++{
++ if (freg_args < end) {
++ memcpy(freg_args, &data, sizeof(data));
++ freg_args++;
++ } else {
++ memcpy(stack_args, &data, sizeof(data));
++ stack_args++;
++ }
++}
++
++
++extern "C" void
++invoke_copy_to_stack(uint64_t* stk, uint64_t *end,
++ uint32_t paramCount, nsXPTCVariant* s)
++{
++ uint64_t *ireg_args = stk;
++ uint64_t *ireg_end = ireg_args + 8;
++ double *freg_args = (double *)ireg_end;
++ double *freg_end = freg_args + 8;
++ uint64_t *stack_args = (uint64_t *)freg_end;
++
++ // leave room for 'that' argument in x0
++ ++ireg_args;
++
++ for (uint32_t i = 0; i < paramCount; i++, s++) {
++ if (s->IsPtrData()) {
++ alloc_word(ireg_args, stack_args, ireg_end, (uint64_t)s->ptr);
++ continue;
++ }
++ // According to the ABI, integral types that are smaller than 8 bytes
++ // are to be passed in 8-byte registers or 8-byte stack slots.
++ switch (s->type) {
++ case nsXPTType::T_FLOAT:
++ alloc_float(freg_args, stack_args, freg_end, s->val.f);
++ break;
++ case nsXPTType::T_DOUBLE:
++ alloc_double(freg_args, stack_args, freg_end, s->val.d);
++ break;
++ case nsXPTType::T_I8: alloc_word(ireg_args, stk, end, s->val.i8); break;
++ case nsXPTType::T_I16: alloc_word(ireg_args, stk, end, s->val.i16); break;
++ case nsXPTType::T_I32: alloc_word(ireg_args, stk, end, s->val.i32); break;
++ case nsXPTType::T_I64: alloc_word(ireg_args, stk, end, s->val.i64); break;
++ case nsXPTType::T_U8: alloc_word(ireg_args, stk, end, s->val.u8); break;
++ case nsXPTType::T_U16: alloc_word(ireg_args, stk, end, s->val.u16); break;
++ case nsXPTType::T_U32: alloc_word(ireg_args, stk, end, s->val.u32); break;
++ case nsXPTType::T_U64: alloc_word(ireg_args, stk, end, s->val.u64); break;
++ case nsXPTType::T_BOOL: alloc_word(ireg_args, stk, end, s->val.b); break;
++ case nsXPTType::T_CHAR: alloc_word(ireg_args, stk, end, s->val.c); break;
++ case nsXPTType::T_WCHAR: alloc_word(ireg_args, stk, end, s->val.wc); break;
++ default:
++ // all the others are plain pointer types
++ alloc_word(ireg_args, stack_args, ireg_end,
++ reinterpret_cast<uint64_t>(s->val.p));
++ break;
++ }
++ }
++}
++
++extern "C" nsresult _NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
++ uint32_t paramCount, nsXPTCVariant* params);
++
++EXPORT_XPCOM_API(nsresult)
++NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
++ uint32_t paramCount, nsXPTCVariant* params)
++{
++ return _NS_InvokeByIndex(that, methodIndex, paramCount, params);
++}
+diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_aarch64.s b/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_aarch64.s
+new file mode 100644
+--- /dev/null
++++ b/xpcom/reflect/xptcall/src/md/unix/xptcinvoke_asm_aarch64.s
+@@ -0,0 +1,67 @@
++/* -*- 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/. */
++
++ .section ".text"
++ .globl _NS_InvokeByIndex
++ .type _NS_InvokeByIndex,@function
++
++/*
++ * _NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
++ * uint32_t paramCount, nsXPTCVariant* params)
++ */
++
++_NS_InvokeByIndex:
++ # set up frame
++ stp x29, x30, [sp,#-32]!
++ mov x29, sp
++ stp x19, x20, [sp,#16]
++
++ # save methodIndex across function calls
++ mov w20, w1
++
++ # end of stack area passed to invoke_copy_to_stack
++ mov x1, sp
++
++ # assume 8 bytes of stack for each argument with 16-byte alignment
++ add w19, w2, #1
++ and w19, w19, #0xfffffffe
++ sub sp, sp, w19, uxth #3
++
++ # temporary place to store args passed in r0-r7,v0-v7
++ sub sp, sp, #128
++
++ # save 'that' on stack
++ str x0, [sp]
++
++ # start of stack area passed to invoke_copy_to_stack
++ mov x0, sp
++ bl invoke_copy_to_stack
++
++ # load arguments passed in r0-r7
++ ldp x6, x7, [sp, #48]
++ ldp x4, x5, [sp, #32]
++ ldp x2, x3, [sp, #16]
++ ldp x0, x1, [sp],#64
++
++ # load arguments passed in v0-v7
++ ldp d6, d7, [sp, #48]
++ ldp d4, d5, [sp, #32]
++ ldp d2, d3, [sp, #16]
++ ldp d0, d1, [sp],#64
++
++ # call the method
++ ldr x16, [x0]
++ add x16, x16, w20, uxth #3
++ ldr x16, [x16]
++ blr x16
++
++ add sp, sp, w19, uxth #3
++ ldp x19, x20, [sp,#16]
++ ldp x29, x30, [sp],#32
++ ret
++
++ .size _NS_InvokeByIndex, . - _NS_InvokeByIndex
++
++
+diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_aarch64.cpp b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_aarch64.cpp
+new file mode 100644
+--- /dev/null
++++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_aarch64.cpp
+@@ -0,0 +1,219 @@
++/* -*- 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"
++#include "xptiprivate.h"
++
++#ifndef __AARCH64EL__
++#error "Only little endian compatibility was tested"
++#endif
++
++/*
++ * This is for AArch64 ABI
++ *
++ * When we're called, the "gp" registers are stored in gprData and
++ * the "fp" registers are stored in fprData. Each array has 8 regs
++ * but first reg in gprData is a placeholder for 'self'.
++ */
++extern "C" nsresult
++PrepareAndDispatch(nsXPTCStubBase* self, uint32_t methodIndex, uint64_t* args,
++ uint64_t *gprData, double *fprData)
++{
++#define PARAM_BUFFER_COUNT 16
++#define PARAM_GPR_COUNT 8
++#define PARAM_FPR_COUNT 8
++
++ nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
++ nsXPTCMiniVariant* dispatchParams = NULL;
++ const nsXPTMethodInfo* info;
++ nsresult result = NS_ERROR_FAILURE;
++
++ NS_ASSERTION(self,"no self");
++
++ self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);
++ NS_ASSERTION(info,"no method info");
++
++ uint32_t 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");
++
++ uint64_t* ap = args;
++ uint32_t next_gpr = 1; // skip first arg which is 'self'
++ uint32_t next_fpr = 0;
++ for (uint32_t i = 0; i < paramCount; i++) {
++ const nsXPTParamInfo& param = info->GetParam(i);
++ const nsXPTType& type = param.GetType();
++ nsXPTCMiniVariant* dp = &dispatchParams[i];
++
++ if (param.IsOut() || !type.IsArithmetic()) {
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.p = (void*)gprData[next_gpr++];
++ } else {
++ dp->val.p = (void*)*ap++;
++ }
++ continue;
++ }
++
++ switch (type) {
++ case nsXPTType::T_I8:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.i8 = (int8_t)gprData[next_gpr++];
++ } else {
++ dp->val.i8 = (int8_t)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_I16:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.i16 = (int16_t)gprData[next_gpr++];
++ } else {
++ dp->val.i16 = (int16_t)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_I32:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.i32 = (int32_t)gprData[next_gpr++];
++ } else {
++ dp->val.i32 = (int32_t)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_I64:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.i64 = (int64_t)gprData[next_gpr++];
++ } else {
++ dp->val.i64 = (int64_t)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_U8:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.u8 = (uint8_t)gprData[next_gpr++];
++ } else {
++ dp->val.u8 = (uint8_t)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_U16:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.u16 = (uint16_t)gprData[next_gpr++];
++ } else {
++ dp->val.u16 = (uint16_t)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_U32:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.u32 = (uint32_t)gprData[next_gpr++];
++ } else {
++ dp->val.u32 = (uint32_t)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_U64:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.u64 = (uint64_t)gprData[next_gpr++];
++ } else {
++ dp->val.u64 = (uint64_t)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_FLOAT:
++ if (next_fpr < PARAM_FPR_COUNT) {
++ memcpy(&dp->val.f, &fprData[next_fpr++], sizeof(dp->val.f));
++ } else {
++ memcpy(&dp->val.f, ap++, sizeof(dp->val.f));
++ }
++ break;
++
++ case nsXPTType::T_DOUBLE:
++ if (next_fpr < PARAM_FPR_COUNT) {
++ memcpy(&dp->val.d, &fprData[next_fpr++], sizeof(dp->val.d));
++ } else {
++ memcpy(&dp->val.d, ap++, sizeof(dp->val.d));
++ }
++ break;
++
++ case nsXPTType::T_BOOL:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.b = (bool)gprData[next_gpr++];
++ } else {
++ dp->val.b = (bool)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_CHAR:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.c = (char)gprData[next_gpr++];
++ } else {
++ dp->val.c = (char)*ap++;
++ }
++ break;
++
++ case nsXPTType::T_WCHAR:
++ if (next_gpr < PARAM_GPR_COUNT) {
++ dp->val.wc = (wchar_t)gprData[next_gpr++];
++ } else {
++ dp->val.wc = (wchar_t)*ap++;
++ }
++ break;
++
++ default:
++ NS_ASSERTION(0, "bad type");
++ break;
++ }
++ }
++
++ result = self->mOuter->CallMethod((uint16_t)methodIndex, info, dispatchParams);
++
++ if (dispatchParams != paramBuffer) {
++ delete [] dispatchParams;
++ }
++
++ return result;
++}
++
++// Load w17 with the constant 'n' and branch to SharedStub().
++# define STUB_ENTRY(n) \
++ __asm__ ( \
++ ".section \".text\" \n\t" \
++ ".align 2\n\t" \
++ ".if "#n" < 10 \n\t" \
++ ".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \
++ ".hidden _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \
++ ".type _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n" \
++ "_ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \
++ ".elseif "#n" < 100 \n\t" \
++ ".globl _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \
++ ".hidden _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \
++ ".type _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n" \
++ "_ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \
++ ".elseif "#n" < 1000 \n\t" \
++ ".globl _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \
++ ".hidden _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \
++ ".type _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n" \
++ "_ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \
++ ".else \n\t" \
++ ".err \"stub number "#n" >= 1000 not yet supported\"\n" \
++ ".endif \n\t" \
++ "mov w17,#"#n" \n\t" \
++ "b SharedStub \n" \
++);
++
++#define SENTINEL_ENTRY(n) \
++ nsresult nsXPTCStubBase::Sentinel##n() \
++{ \
++ NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \
++ return NS_ERROR_NOT_IMPLEMENTED; \
++}
++
++#include "xptcstubsdef.inc"
+diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_aarch64.s b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_aarch64.s
+new file mode 100644
+--- /dev/null
++++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_aarch64.s
+@@ -0,0 +1,39 @@
++# 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/.
++
++ .set NGPREGS,8
++ .set NFPREGS,8
++
++ .section ".text"
++ .globl SharedStub
++ .hidden SharedStub
++ .type SharedStub,@function
++SharedStub:
++ stp x29, x30, [sp,#-16]!
++ mov x29, sp
++
++ sub sp, sp, #8*(NGPREGS+NFPREGS)
++ stp x0, x1, [sp, #64+(0*8)]
++ stp x2, x3, [sp, #64+(2*8)]
++ stp x4, x5, [sp, #64+(4*8)]
++ stp x6, x7, [sp, #64+(6*8)]
++ stp d0, d1, [sp, #(0*8)]
++ stp d2, d3, [sp, #(2*8)]
++ stp d4, d5, [sp, #(4*8)]
++ stp d6, d7, [sp, #(6*8)]
++
++ # methodIndex passed from stub
++ mov w1, w17
++
++ add x2, sp, #16+(8*(NGPREGS+NFPREGS))
++ add x3, sp, #8*NFPREGS
++ add x4, sp, #0
++
++ bl PrepareAndDispatch
++
++ add sp, sp, #8*(NGPREGS+NFPREGS)
++ ldp x29, x30, [sp],#16
++ ret
++
++ .size SharedStub, . - SharedStub
+