From 65f95f26ff0e7b4be4704fedc52344a26d22a4e2 Mon Sep 17 00:00:00 2001 From: Yuta Saito Date: Sat, 15 Jan 2022 23:10:48 +0900 Subject: [wasm] add asyncify based setjmp, fiber, register scan emulation configure.ac: setup build tools and register objects main.c: wrap main with rb_wasm_rt_start to handle asyncify unwinds tool/m4/ruby_wasm_tools.m4: setup default command based on WASI_SDK_PATH environment variable. checks wasm-opt which is used for asyncify. tool/wasm-clangw wasm/wasm-opt: a clang wrapper which replaces real wasm-opt with do-nothing wasm-opt to avoid misoptimization before asyncify. asyncify is performed at POSTLINK, but clang linker driver tries to run optimization by wasm-opt unconditionally. inlining pass at wasm level breaks asyncify's assumption, so should not optimize before POSTLIK. wasm/GNUmakefile.in: wasm specific rules to compile objects --- wasm/machine_core.S | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 wasm/machine_core.S (limited to 'wasm/machine_core.S') diff --git a/wasm/machine_core.S b/wasm/machine_core.S new file mode 100644 index 0000000000..f0050536f5 --- /dev/null +++ b/wasm/machine_core.S @@ -0,0 +1,25 @@ + # extern int __stack_pointer; + .globaltype __stack_pointer, i32 + + # NOTE: Implement this in raw assembly to avoid stack pointer + # operations in C-prologue and epilogue. + + # void *rb_wasm_get_stack_pointer(void); + .section .text.rb_wasm_get_stack_pointer,"",@ + .globl rb_wasm_get_stack_pointer + .type rb_wasm_get_stack_pointer,@function +rb_wasm_get_stack_pointer: + .functype rb_wasm_get_stack_pointer () -> (i32) + global.get __stack_pointer + end_function + + # void rb_wasm_set_stack_pointer(void *sp); + .section .text.rb_wasm_set_stack_pointer,"",@ + .globl rb_wasm_set_stack_pointer + .type rb_wasm_set_stack_pointer,@function +rb_wasm_set_stack_pointer: + .functype rb_wasm_set_stack_pointer (i32) -> () + local.get 0 + global.set __stack_pointer + end_function + -- cgit v1.2.1