Jake Ehrlich
87b0dbab2d
This change adds enough functionality to compile hello world from S-expressions in a contrived way. It fails to handle this input realistically in several ways. 1) It assumes the existence of dart:core::print 2) It handles all dart values as C strings 3) It assumes only very static calls can be made with no named arguments 4) If a stack overflow is detected it just traps. 5) I'm not sure how the current dart runtime works but the contrived runtime used here puts a contrived thread object in `gs`. This change adds a basic framework for implementing new instructions that should make it possible to implement new instructions with much smaller changes however. Change-Id: Ic167a29908a875bfc234c4e9bf5f4ac2ff52a3a2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/117222 Commit-Queue: Jake Ehrlich <jakehehrlich@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
39 lines
738 B
ArmAsm
39 lines
738 B
ArmAsm
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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.data
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.type _threadObject,@object
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.size _threadObject,1400
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_threadObject:
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.fill 1400
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.text
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.file "runtime.S"
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.globl main
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.type main,@function
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.globl "dart:core::print"
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.type "dart:core::print",@function
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.globl arch_prctl
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.type arch_prctl,@function
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main:
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movq %rsp, %rax
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subq $0x1000, %rax
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movq %rax, [_threadObject + 72]
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# Pass ARCH_SET_GS
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movq $0x1001, %rdi
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# Pass $_threadObject
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movq $_threadObject, %rsi
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callq arch_prctl
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callq "hello.dart::main"
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ret
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"dart:core::print":
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callq puts
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ret
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