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3a6cdeda89
fiber machine stack is placed outside of C stack allocated by wasm-ld,
so highest stack address recorded by `rb_wasm_record_stack_base` is
invalid when running on non-main fiber.
Therefore, we should scan `stack_{start,end}` which always point a valid
stack range in any context.
25 lines
796 B
C
25 lines
796 B
C
#ifndef RB_WASM_SUPPORT_MACHINE_H
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#define RB_WASM_SUPPORT_MACHINE_H
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// Function pointer used as scan callbacks
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typedef void (*rb_wasm_scan_func)(void*, void*);
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// Scan WebAssembly locals in the all call stack (like registers) spilled by Asyncify
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// Used by conservative GC
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void rb_wasm_scan_locals(rb_wasm_scan_func scan);
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// Get base address of userland C-stack memory space in WebAssembly. Used by conservative GC
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void *rb_wasm_stack_get_base(void);
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// Get the current stack pointer
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void *rb_wasm_get_stack_pointer(void);
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// Set the current stack pointer
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void rb_wasm_set_stack_pointer(void *sp);
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// Returns the Asyncify buffer of next rewinding if unwound for spilling locals.
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// Used by the top level Asyncify handling in wasm/runtime.c
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void *rb_wasm_handle_scan_unwind(void);
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#endif
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