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sys/arm64/xen/hypercall.S
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/****************************************************************************** | |||||
* SPDX-License-Identifier: MIT OR GPL-2.0-only | |||||
* | |||||
imp: `GPL-2.0` is deprecated and should not be used
```
SPDX-License-Identifier: MIT OR GPL-2.0… | |||||
* hypercall.S | |||||
* | |||||
* Xen hypercall wrappers | |||||
* | |||||
* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012 | |||||
* | |||||
* This program is free software; you can redistribute it and/or | |||||
* modify it under the terms of the GNU General Public License version 2 | |||||
* as published by the Free Software Foundation; or, when distributed | |||||
* separately from the Linux kernel or incorporated into other | |||||
* software packages, subject to the following license: | |||||
* | |||||
Done Inline ActionsThis looks like MIT; we probably want an SPDX tag at the top of this file? I reckon: SPDX-License-Identifier: MITOR GPL-2.0 kevans: This looks like MIT; we probably want an SPDX tag at the top of this file? I reckon:
`SPDX… | |||||
* Permission is hereby granted, free of charge, to any person obtaining a copy | |||||
* of this source file (the "Software"), to deal in the Software without | |||||
* restriction, including without limitation the rights to use, copy, modify, | |||||
* merge, publish, distribute, sublicense, and/or sell copies of the Software, | |||||
* and to permit persons to whom the Software is furnished to do so, subject to | |||||
* the following conditions: | |||||
* | |||||
* The above copyright notice and this permission notice shall be included in | |||||
* all copies or substantial portions of the Software. | |||||
* | |||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |||||
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |||||
* IN THE SOFTWARE. | |||||
*/ | |||||
/* | |||||
* The Xen hypercall calling convention is very similar to the procedure | |||||
* call standard for the ARM 64-bit architecture: the first parameter is | |||||
* passed in x0, the second in x1, the third in x2, the fourth in x3 and | |||||
* the fifth in x4. | |||||
* | |||||
* The hypercall number is passed in x16. | |||||
* | |||||
* The return value is in x0. | |||||
* | |||||
* The hvc ISS is required to be 0xEA1, that is the Xen specific ARM | |||||
* hypercall tag. | |||||
* | |||||
* Parameter structs passed to hypercalls are laid out according to | |||||
* the ARM 64-bit EABI standard. | |||||
*/ | |||||
#include <machine/asm.h> | |||||
#include <xen/xen-os.h> | |||||
__FBSDID("$FreeBSD$"); | |||||
#define XEN_IMM 0xEA1 | |||||
#define HYPERCALL_SIMPLE(hypercall) \ | |||||
ENTRY(HYPERVISOR_##hypercall); \ | |||||
mov x16, #__HYPERVISOR_##hypercall; \ | |||||
hvc XEN_IMM; \ | |||||
ret; \ | |||||
END(HYPERVISOR_##hypercall) | |||||
#define HYPERCALL0 HYPERCALL_SIMPLE | |||||
#define HYPERCALL1 HYPERCALL_SIMPLE | |||||
#define HYPERCALL2 HYPERCALL_SIMPLE | |||||
#define HYPERCALL3 HYPERCALL_SIMPLE | |||||
#define HYPERCALL4 HYPERCALL_SIMPLE | |||||
#define HYPERCALL5 HYPERCALL_SIMPLE | |||||
.text | |||||
HYPERCALL2(xen_version); | |||||
HYPERCALL3(console_io); | |||||
HYPERCALL3(grant_table_op); | |||||
HYPERCALL2(sched_op); | |||||
HYPERCALL2(event_channel_op); | |||||
HYPERCALL2(hvm_op); | |||||
HYPERCALL2(memory_op); | |||||
HYPERCALL2(physdev_op); | |||||
HYPERCALL3(vcpu_op); | |||||
HYPERCALL1(tmem_op); | |||||
HYPERCALL1(platform_op); | |||||
HYPERCALL2(multicall); | |||||
HYPERCALL3(dm_op); | |||||
ENTRY(privcmd_hypercall) | |||||
mov x16, x0 | |||||
mov x0, x1 | |||||
mov x1, x2 | |||||
mov x2, x3 | |||||
mov x3, x4 | |||||
mov x4, x5 | |||||
hvc XEN_IMM | |||||
ret | |||||
END(privcmd_call); |
GPL-2.0 is deprecated and should not be used
is the correct way to flag this.