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| author | Pasha <pasha@member.fsf.org> | 2024-02-20 18:49:50 +0000 |
|---|---|---|
| committer | Pasha <pasha@member.fsf.org> | 2024-02-20 18:49:50 +0000 |
| commit | 5e0b8d508ed51004bd836384293be00950ee62c9 (patch) | |
| tree | e3f16b1aa8b7177032ce3ec429fbad2b1d92a876 /linux/src/arch/i386/lib/semaphore.S | |
| download | gnumach-riscv-5e0b8d508ed51004bd836384293be00950ee62c9.tar.gz gnumach-riscv-5e0b8d508ed51004bd836384293be00950ee62c9.tar.bz2 | |
init gnumach copy
Diffstat (limited to 'linux/src/arch/i386/lib/semaphore.S')
| -rw-r--r-- | linux/src/arch/i386/lib/semaphore.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/linux/src/arch/i386/lib/semaphore.S b/linux/src/arch/i386/lib/semaphore.S new file mode 100644 index 0000000..e09655c --- /dev/null +++ b/linux/src/arch/i386/lib/semaphore.S @@ -0,0 +1,35 @@ +/* + * linux/arch/i386/lib/semaphore.S + * + * Copyright (C) 1996 Linus Torvalds + */ + +#include <linux/linkage.h> + +/* + * "down_failed" is called with the eventual return address + * in %eax, and the address of the semaphore in %ecx. We need + * to increment the number of waiters on the semaphore, + * call "__down()", and then eventually return to try again. + */ +ENTRY(down_failed) + pushl %eax + pushl %ecx + call SYMBOL_NAME(__down) + popl %ecx + ret + +ENTRY(up_wakeup) + pushl %eax + pushl %ecx + call SYMBOL_NAME(__up) + popl %ecx + ret + +ENTRY(down_failed_interruptible) + pushl %eax + pushl %ecx + call SYMBOL_NAME(__down_interruptible) + popl %ecx + ret + |