diff options
Diffstat (limited to 'lib/libc_r/arch/powerpc/uthread_machdep_asm.S')
| -rw-r--r-- | lib/libc_r/arch/powerpc/uthread_machdep_asm.S | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/lib/libc_r/arch/powerpc/uthread_machdep_asm.S b/lib/libc_r/arch/powerpc/uthread_machdep_asm.S new file mode 100644 index 00000000000..21cd4f0889e --- /dev/null +++ b/lib/libc_r/arch/powerpc/uthread_machdep_asm.S @@ -0,0 +1,106 @@ +/* $OpenBSD: uthread_machdep_asm.S,v 1.1 2000/09/25 01:16:40 d Exp $ */ +/* David Leonard, <d@csee.uq.edu.au>. Public domain. */ + +#include <machine/asm.h> + +/* These need to be kept in sync with uthread_machdep.c */ +#define REGOFF(n) (2*4 + (n-14)*4) +#define FPOFF(n) (REGOFF(36) + (n-14)*4) +#define FRAMESIZE FPOFF(33) + +#define SA(x) (((x)+0xf)&~0xf) + +ENTRY(_thread_machdep_switch) + stwu 1, -SA(FRAMESIZE)(1) + + /* Save context into frame */ + stw 14, REGOFF(14)(1) + stw 15, REGOFF(15)(1) + stw 16, REGOFF(16)(1) + stw 17, REGOFF(17)(1) + stw 18, REGOFF(18)(1) + stw 19, REGOFF(19)(1) + stw 20, REGOFF(20)(1) + stw 21, REGOFF(21)(1) + stw 22, REGOFF(22)(1) + stw 23, REGOFF(23)(1) + stw 24, REGOFF(24)(1) + stw 25, REGOFF(25)(1) + stw 26, REGOFF(26)(1) + stw 27, REGOFF(27)(1) + stw 28, REGOFF(28)(1) + stw 29, REGOFF(29)(1) + stw 30, REGOFF(30)(1) + stw 31, REGOFF(31)(1) + mflr 0; stw 0, REGOFF(32)(1) + mfcr 0; stw 0, REGOFF(33)(1) + mfctr 0; stw 0, REGOFF(34)(1) + mfxer 0; stw 0, REGOFF(35)(1) + stfd 14, FPOFF(14)(1) + stfd 15, FPOFF(15)(1) + stfd 16, FPOFF(16)(1) + stfd 17, FPOFF(17)(1) + stfd 18, FPOFF(18)(1) + stfd 19, FPOFF(19)(1) + stfd 20, FPOFF(20)(1) + stfd 21, FPOFF(21)(1) + stfd 22, FPOFF(22)(1) + stfd 23, FPOFF(23)(1) + stfd 24, FPOFF(24)(1) + stfd 25, FPOFF(25)(1) + stfd 26, FPOFF(26)(1) + stfd 27, FPOFF(27)(1) + stfd 28, FPOFF(28)(1) + stfd 29, FPOFF(29)(1) + stfd 30, FPOFF(30)(1) + stfd 31, FPOFF(31)(1) + mffs 0; stfd 0, FPOFF(32)(1) + + /* Switch stacks */ + stw 1, 0(4) + lwz 1, 0(3) + + /* Restore context from the frame */ + lfd 0, FPOFF(32)(1); mtfsf 0xff, 0 + lfd 31, FPOFF(31)(1) + lfd 30, FPOFF(30)(1) + lfd 29, FPOFF(29)(1) + lfd 28, FPOFF(28)(1) + lfd 27, FPOFF(27)(1) + lfd 26, FPOFF(26)(1) + lfd 25, FPOFF(25)(1) + lfd 24, FPOFF(24)(1) + lfd 23, FPOFF(23)(1) + lfd 22, FPOFF(22)(1) + lfd 21, FPOFF(21)(1) + lfd 20, FPOFF(20)(1) + lfd 19, FPOFF(19)(1) + lfd 18, FPOFF(18)(1) + lfd 17, FPOFF(17)(1) + lfd 16, FPOFF(16)(1) + lfd 15, FPOFF(15)(1) + lfd 14, FPOFF(14)(1) + lwz 0, REGOFF(35)(1); mtxer 0 + lwz 0, REGOFF(34)(1); mtctr 0 + lwz 0, REGOFF(33)(1); mtcr 0 + lwz 0, REGOFF(32)(1); mtlr 0 + lwz 31, REGOFF(31)(1) + lwz 30, REGOFF(30)(1) + lwz 29, REGOFF(29)(1) + lwz 28, REGOFF(28)(1) + lwz 27, REGOFF(27)(1) + lwz 26, REGOFF(26)(1) + lwz 25, REGOFF(25)(1) + lwz 24, REGOFF(24)(1) + lwz 23, REGOFF(23)(1) + lwz 22, REGOFF(22)(1) + lwz 21, REGOFF(21)(1) + lwz 20, REGOFF(20)(1) + lwz 19, REGOFF(19)(1) + lwz 18, REGOFF(18)(1) + lwz 17, REGOFF(17)(1) + lwz 16, REGOFF(16)(1) + lwz 15, REGOFF(15)(1) + lwz 14, REGOFF(14)(1) + la 1, SA(FRAMESIZE)(1) + blr |