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99de78e175
Add wasip1 asm and symbols to cmd/internal/obj, cmd/link and runtime. For #58141 Co-authored-by: Richard Musiol <neelance@gmail.com> Co-authored-by: Achille Roussel <achille.roussel@gmail.com> Co-authored-by: Julien Fabre <ju.pryz@gmail.com> Co-authored-by: Evan Phoenix <evan@phx.io> Change-Id: Ie088d9b65ea13e231694af6341465f95be33093f Reviewed-on: https://go-review.googlesource.com/c/go/+/479617 Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Bypass: Ian Lance Taylor <iant@golang.org> Auto-Submit: Ian Lance Taylor <iant@golang.org> Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Run-TryBot: Ian Lance Taylor <iant@google.com>
68 lines
1.5 KiB
ArmAsm
68 lines
1.5 KiB
ArmAsm
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "go_asm.h"
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#include "textflag.h"
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// _rt0_wasm_js is not used itself. It only exists to mark the exported functions as alive.
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TEXT _rt0_wasm_js(SB),NOSPLIT,$0
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I32Const $wasm_export_run(SB)
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Drop
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I32Const $wasm_export_resume(SB)
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Drop
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I32Const $wasm_export_getsp(SB)
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Drop
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// wasm_export_run gets called from JavaScript. It initializes the Go runtime and executes Go code until it needs
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// to wait for an event. It does NOT follow the Go ABI. It has two WebAssembly parameters:
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// R0: argc (i32)
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// R1: argv (i32)
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TEXT wasm_export_run(SB),NOSPLIT,$0
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MOVD $runtime·wasmStack+(m0Stack__size-16)(SB), SP
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Get SP
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Get R0 // argc
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I64ExtendI32U
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I64Store $0
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Get SP
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Get R1 // argv
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I64ExtendI32U
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I64Store $8
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I32Const $0 // entry PC_B
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Call runtime·rt0_go(SB)
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Drop
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Call wasm_pc_f_loop(SB)
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Return
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// wasm_export_resume gets called from JavaScript. It resumes the execution of Go code until it needs to wait for
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// an event.
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TEXT wasm_export_resume(SB),NOSPLIT,$0
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I32Const $0
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Call runtime·handleEvent(SB)
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Drop
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Call wasm_pc_f_loop(SB)
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Return
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// wasm_export_getsp gets called from JavaScript to retrieve the SP.
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TEXT wasm_export_getsp(SB),NOSPLIT,$0
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Get SP
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Return
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TEXT runtime·pause(SB), NOSPLIT, $0-8
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MOVD newsp+0(FP), SP
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I32Const $1
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Set PAUSE
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RETUNWIND
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TEXT runtime·exit(SB), NOSPLIT, $0-4
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I32Const $0
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Call runtime·wasmExit(SB)
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I32Const $1
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Set PAUSE
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RETUNWIND
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