| /* |
| * arch/ppc64/kernel/hvCall.S |
| * |
| * |
| * This file contains the code to perform calls to the |
| * iSeries LPAR hypervisor |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #include <asm/ppc_asm.h> |
| #include <asm/processor.h> |
| |
| .text |
| |
| /* |
| * Hypervisor call |
| * |
| * Invoke the iSeries hypervisor via the System Call instruction |
| * Parameters are passed to this routine in registers r3 - r10 |
| * |
| * r3 contains the HV function to be called |
| * r4-r10 contain the operands to the hypervisor function |
| * |
| */ |
| |
| _GLOBAL(HvCall) |
| _GLOBAL(HvCall0) |
| _GLOBAL(HvCall1) |
| _GLOBAL(HvCall2) |
| _GLOBAL(HvCall3) |
| _GLOBAL(HvCall4) |
| _GLOBAL(HvCall5) |
| _GLOBAL(HvCall6) |
| _GLOBAL(HvCall7) |
| |
| |
| mfcr r0 |
| std r0,-8(r1) |
| stdu r1,-(STACK_FRAME_OVERHEAD+16)(r1) |
| |
| /* r0 = 0xffffffffffffffff indicates a hypervisor call */ |
| |
| li r0,-1 |
| |
| /* Invoke the hypervisor */ |
| |
| sc |
| |
| ld r1,0(r1) |
| ld r0,-8(r1) |
| mtcrf 0xff,r0 |
| |
| /* return to caller, return value in r3 */ |
| |
| blr |
| |
| _GLOBAL(HvCall0Ret16) |
| _GLOBAL(HvCall1Ret16) |
| _GLOBAL(HvCall2Ret16) |
| _GLOBAL(HvCall3Ret16) |
| _GLOBAL(HvCall4Ret16) |
| _GLOBAL(HvCall5Ret16) |
| _GLOBAL(HvCall6Ret16) |
| _GLOBAL(HvCall7Ret16) |
| |
| mfcr r0 |
| std r0,-8(r1) |
| std r31,-16(r1) |
| stdu r1,-(STACK_FRAME_OVERHEAD+32)(r1) |
| |
| mr r31,r4 |
| li r0,-1 |
| mr r4,r5 |
| mr r5,r6 |
| mr r6,r7 |
| mr r7,r8 |
| mr r8,r9 |
| mr r9,r10 |
| |
| sc |
| |
| std r3,0(r31) |
| std r4,8(r31) |
| |
| mr r3,r5 |
| |
| ld r1,0(r1) |
| ld r0,-8(r1) |
| mtcrf 0xff,r0 |
| ld r31,-16(r1) |
| |
| blr |
| |
| |
