2 * Copyright 2010-2011 Freescale Semiconductor, Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2, as
6 * published by the Free Software Foundation.
9 #ifndef ASM_KVM_BOOKE_HV_ASM_H
10 #define ASM_KVM_BOOKE_HV_ASM_H
15 * All exceptions from guest state must go through KVM
16 * (except for those which are delivered directly to the guest) --
17 * there are no exceptions for which we fall through directly to
18 * the normal host handler.
20 * Expected inputs (normal exceptions):
21 * SCRATCH0 = saved r10
23 * r11 = appropriate SRR1 variant (currently used as scratch)
25 * *(r10 + THREAD_NORMSAVE(0)) = saved r11
26 * *(r10 + THREAD_NORMSAVE(2)) = saved r13
28 * Expected inputs (crit/mcheck/debug exceptions):
29 * appropriate SCRATCH = saved r8
30 * r8 = exception level stack frame
31 * r9 = *(r8 + _CCR) = saved CR
32 * r11 = appropriate SRR1 variant (currently used as scratch)
33 * *(r8 + GPR9) = saved r9
34 * *(r8 + GPR10) = saved r10 (r10 not yet clobbered)
35 * *(r8 + GPR11) = saved r11
37 .macro DO_KVM intno srr1
38 #ifdef CONFIG_KVM_BOOKE_HV
40 mtocrf 0x80, r11 /* check MSR[GS] without clobbering reg */
41 bf 3, kvmppc_resume_\intno\()_\srr1
42 b kvmppc_handler_\intno\()_\srr1
43 kvmppc_resume_\intno\()_\srr1:
44 END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
48 #endif /*__ASSEMBLY__ */
49 #endif /* ASM_KVM_BOOKE_HV_ASM_H */