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Make _Thread_local work across platforms

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We now rewrite the binary image at runtime on Windows and XNU to change
mov %fs:0,%reg instructions to use %gs instead. There's also simpler
threading API introduced by this change and it's called _spawn() and
_join(), which has replaced most clone() usage.
This commit is contained in:
Justine Tunney 2022-07-10 04:01:17 -07:00
parent e4d6e263d4
commit 5f4f6b0e69
51 changed files with 808 additions and 1043 deletions
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9
libc/runtime/winthreadlaunch.S
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@ -26,8 +26,9 @@
// runtime facilities.
//
// @param %rdi is arg
// @param %rsi is func
// @param %rdx is stack
// @param %rsi is tid
// @param %rdx is func
// @param %rcx is stack
// @return %rax is exit code
// @see clone()
WinThreadLaunch:
@ -35,9 +36,9 @@ WinThreadLaunch:
push %r15
mov %rbp,%r15
mov %rsp,%rbx
mov %rdx,%rsp
mov %rcx,%rsp
xor %rbp,%rbp
call *%rsi
call *%rdx
mov %r15,%rbp
mov %rbx,%rsp
pop %r15