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return_stack placed on stack, this allows for reentry and no TLS switch for threads; makes more sense

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veclav talica 2023-09-19 11:57:53 +05:00
parent d97dcff494
commit 0d5bd46412
1 changed files with 2 additions and 3 deletions
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5
src/arch/x86-64/jedino-jedro.zig
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@ -31,8 +31,6 @@ const int = @import("../../interpreter.zig");
const Word = int.Word; const Word = int.Word;
pub const RecursionLimit = int.RecursionLimit; pub const RecursionLimit = int.RecursionLimit;
threadlocal var return_stack: [RecursionLimit + 1]Word = undefined;
// todo: Variant that pushes array of words. // todo: Variant that pushes array of words.
/// (iw | -- iw) /// (iw | -- iw)
pub fn opPushWord() callconv(.Naked) noreturn { pub fn opPushWord() callconv(.Naked) noreturn {
@ -117,7 +115,6 @@ pub fn opReturn() callconv(.Naked) noreturn {
); );
} }
// todo: Make sure it's non reentry in one given thread.
// todo: Allow passing initial stack via array of words. // todo: Allow passing initial stack via array of words.
// todo: Ensure correctness. // todo: Ensure correctness.
// todo: Use remaining stack as return. // todo: Use remaining stack as return.
@ -127,6 +124,8 @@ pub fn execute(binary: []const Word, entry_addr: usize) void {
// https://wiki.osdev.org/System_V_ABI // https://wiki.osdev.org/System_V_ABI
@setCold(true); @setCold(true);
var return_stack: [RecursionLimit + 1]Word = undefined;
// Such device is used so that opReturn could be used for return. // Such device is used so that opReturn could be used for return.
asm volatile ( asm volatile (
\\ movq $0f, 8(%%r13) \\ movq $0f, 8(%%r13)