Rich Felker cfc09b1ecf improve mips syscall asm constraints to use immediates, if possible ... by using the "ir" constraint (immediate or register) and the carefully constructed instruction addu $2,$0,%2 which can take either an immediate or a register for %2, the new inline asm admits maximal optimization with no register spillage to the stack when the compiler successfully performs constant propagration, but still works by allocating a register when the syscall number cannot be recognized as a constant. in the case of syscalls with 0-3 arguments it barely matters, but for 4-argument syscalls, using an immediate for the syscall number avoids creating a stack frame for the syscall wrapper function.		2012-09-11 02:23:47 -04:00
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arm	inline syscall support for arm	2012-09-09 01:29:19 -04:00
i386	syscall organization overhaul	2012-09-08 22:43:14 -04:00
mips	improve mips syscall asm constraints to use immediates, if possible	2012-09-11 02:23:47 -04:00
x86_64	syscall organization overhaul	2012-09-08 22:43:14 -04:00