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| author | Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> | 2023-03-24 23:07:58 -0700 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2023-04-05 19:28:25 +0000 |
| commit | 99de78e175bed03e21e0da72d2f084c88e4f62ad (patch) | |
| tree | 695fc1cf5ec100426b3dd72f4bb846b5f0b71f0e /src/runtime/asm_wasm.s | |
| parent | c00e9285eae4599f6a123d0a355633379be998e8 (diff) | |
| download | go-99de78e175bed03e21e0da72d2f084c88e4f62ad.tar.xz | |
all: add wasip1 asm and link logic
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>
Diffstat (limited to 'src/runtime/asm_wasm.s')
| -rw-r--r-- | src/runtime/asm_wasm.s | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/runtime/asm_wasm.s b/src/runtime/asm_wasm.s index 330c10cc0c..9cd8b5a99f 100644 --- a/src/runtime/asm_wasm.s +++ b/src/runtime/asm_wasm.s @@ -15,7 +15,9 @@ TEXT runtime·rt0_go(SB), NOSPLIT|NOFRAME|TOPFRAME, $0 // set g to g0 MOVD $runtime·g0(SB), g CALLNORESUME runtime·check(SB) +#ifdef GOOS_js CALLNORESUME runtime·args(SB) +#endif CALLNORESUME runtime·osinit(SB) CALLNORESUME runtime·schedinit(SB) MOVD $runtime·mainPC(SB), 0(SP) @@ -482,3 +484,42 @@ TEXT runtime·gcWriteBarrier8<ABIInternal>(SB),NOSPLIT,$0 I64Const $64 Call gcWriteBarrier<>(SB) Return + +TEXT wasm_pc_f_loop(SB),NOSPLIT,$0 +// Call the function for the current PC_F. Repeat until PAUSE != 0 indicates pause or exit. +// The WebAssembly stack may unwind, e.g. when switching goroutines. +// The Go stack on the linear memory is then used to jump to the correct functions +// with this loop, without having to restore the full WebAssembly stack. +// It is expected to have a pending call before entering the loop, so check PAUSE first. + Get PAUSE + I32Eqz + If + loop: + Loop + // Get PC_B & PC_F from -8(SP) + Get SP + I32Const $8 + I32Sub + I32Load16U $0 // PC_B + + Get SP + I32Const $8 + I32Sub + I32Load16U $2 // PC_F + + CallIndirect $0 + Drop + + Get PAUSE + I32Eqz + BrIf loop + End + End + + I32Const $0 + Set PAUSE + + Return + +TEXT wasm_export_lib(SB),NOSPLIT,$0 + UNDEF |