72 lines
2.6 KiB
Diff
72 lines
2.6 KiB
Diff
From 7cc86ebe881f36bfef18d8eeee666d2a55eae892 Mon Sep 17 00:00:00 2001
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From: Guilherme Iscaro <iscaro@profusion.mobi>
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Date: Fri, 31 Mar 2017 10:31:49 -0300
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Subject: [PATCH] Fix build on ARMv6.
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The ARMv6 and older architures does not support the movw and movl
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instructions, thus causing a build break.
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This patch fix the problem by creating a new offlineasm instruction,
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which will use the ldr instruction to load a immediate into a register.
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https://bugs.webkit.org/show_bug.cgi?id=141288
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Reviewed by NOBODY (OOPS!).
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* llint/LowLevelInterpreter.asm:
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* offlineasm/arm.rb:
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* offlineasm/instructions.rb:
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---
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Source/JavaScriptCore/llint/LowLevelInterpreter.asm | 8 +++++++-
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Source/JavaScriptCore/offlineasm/arm.rb | 2 ++
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Source/JavaScriptCore/offlineasm/instructions.rb | 3 ++-
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3 files changed, 11 insertions(+), 2 deletions(-)
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diff --git a/Source/JavaScriptCore/llint/LowLevelInterpreter.asm b/Source/JavaScriptCore/llint/LowLevelInterpreter.asm
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index ab3c0c8e771..6c32eef8852 100644
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--- a/Source/JavaScriptCore/llint/LowLevelInterpreter.asm
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+++ b/Source/JavaScriptCore/llint/LowLevelInterpreter.asm
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@@ -1167,7 +1167,13 @@ macro setEntryAddress(index, label)
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move index, t4
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storep t1, [a0, t4, 8]
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elsif ARM or ARMv7 or ARMv7_TRADITIONAL
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- mvlbl (label - _relativePCBase), t4
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+ if ARM
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+ ldrlbl t4, label
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+ ldrlbl t3, _relativePCBase
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+ subp t4, t3, t4
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+ else
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+ mvlbl (label - _relativePCBase), t4
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+ end
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addp t4, t1, t4
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move index, t3
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storep t4, [a0, t3, 4]
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diff --git a/Source/JavaScriptCore/offlineasm/arm.rb b/Source/JavaScriptCore/offlineasm/arm.rb
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index c8064a59196..a9c40c8995c 100644
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--- a/Source/JavaScriptCore/offlineasm/arm.rb
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+++ b/Source/JavaScriptCore/offlineasm/arm.rb
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@@ -504,6 +504,8 @@ class Instruction
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when "mvlbl"
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$asm.puts "movw #{operands[1].armOperand}, \#:lower16:#{operands[0].value}"
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$asm.puts "movt #{operands[1].armOperand}, \#:upper16:#{operands[0].value}"
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+ when "ldrlbl"
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+ $asm.puts "ldr #{operands[0].armOperand}, =#{operands[1].value}"
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when "nop"
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$asm.puts "nop"
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when "bieq", "bpeq", "bbeq"
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diff --git a/Source/JavaScriptCore/offlineasm/instructions.rb b/Source/JavaScriptCore/offlineasm/instructions.rb
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index bbfce7193b3..8cc1cb961ce 100644
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--- a/Source/JavaScriptCore/offlineasm/instructions.rb
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+++ b/Source/JavaScriptCore/offlineasm/instructions.rb
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@@ -261,7 +261,8 @@ X86_INSTRUCTIONS =
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ARM_INSTRUCTIONS =
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[
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"clrbp",
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- "mvlbl"
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+ "mvlbl",
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+ "ldrlbl"
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]
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ARM64_INSTRUCTIONS =
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--
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2.12.1
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