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| author | Daniel Hellstrom <daniel@gaisler.com> | 2014-05-23 08:52:16 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2014-05-23 09:14:15 -0500 |
| commit | 6a740c2e70731522766f315739a6d2eb3f95043f (patch) | |
| tree | 50fb435a3e846dcbd652e32e06a620cedbddf31e /c/src/lib/libcpu/sparc/syscall/syscall.S | |
| parent | SPARC: syscall code clean-up and minor optimizations (diff) | |
| download | rtems-6a740c2e70731522766f315739a6d2eb3f95043f.tar.bz2 | |
SPARC: add syscall 1 (exit) function entry point
The exit SPARC system call doesn't have a function entry
point like the others do. This is probably why people use
TA 0x0 instruction directly for shutting down the system.
Diffstat (limited to 'c/src/lib/libcpu/sparc/syscall/syscall.S')
| -rw-r--r-- | c/src/lib/libcpu/sparc/syscall/syscall.S | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/sparc/syscall/syscall.S b/c/src/lib/libcpu/sparc/syscall/syscall.S index 2d53ebeae1..a0a860c912 100644 --- a/c/src/lib/libcpu/sparc/syscall/syscall.S +++ b/c/src/lib/libcpu/sparc/syscall/syscall.S @@ -29,6 +29,10 @@ * l1 = pc * l2 = npc * g1 = system call id + * + * System Call 1 (exit): + * g2 = additional exit code 1 + * g3 = additional exit code 2 */ PUBLIC(syscall) @@ -70,4 +74,13 @@ SYM(sparc_enable_interrupts): retl ta 0 + PUBLIC(sparc_syscall_exit) + +SYM(sparc_syscall_exit): + + mov SYS_exit, %g1 + mov %o0, %g2 ! Additional exit code 1 + mov %o1, %g3 ! Additional exit code 2 + ta 0 + /* end of file */ |