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/* SPDX-License-Identifier: GPL-2.0 */
#include <asm/asm-offsets.h>
#include <asm/asm.h>
#include <linux/linkage.h>
#include <linux/errno.h>
#include "../../virt/vmx/tdx/tdxcall.S"
.section .noinstr.text, "ax"
/*
* __tdcall() - Used by TDX guests to request services from the TDX
* module (does not include VMM services) using TDCALL instruction.
*
* __tdcall() function ABI:
*
* @fn (RDI) - TDCALL Leaf ID, moved to RAX
* @args (RSI) - struct tdx_module_args for input
*
* Only RCX/RDX/R8-R11 are used as input registers.
*
* Return status of TDCALL via RAX.
*/
SYM_FUNC_START(__tdcall)
TDX_MODULE_CALL host=0
SYM_FUNC_END(__tdcall)
/*
* __tdcall_ret() - Used by TDX guests to request services from the TDX
* module (does not include VMM services) using TDCALL instruction, with
* saving output registers to the 'struct tdx_module_args' used as input.
*
* __tdcall_ret() function ABI:
*
* @fn (RDI) - TDCALL Leaf ID, moved to RAX
* @args (RSI) - struct tdx_module_args for input and output
*
* Only RCX/RDX/R8-R11 are used as input/output registers.
*
* Return status of TDCALL via RAX.
*/
SYM_FUNC_START(__tdcall_ret)
TDX_MODULE_CALL host=0 ret=1
SYM_FUNC_END(__tdcall_ret)
/*
* __tdcall_saved_ret() - Used by TDX guests to request services from the
* TDX module (including VMM services) using TDCALL instruction, with
* saving output registers to the 'struct tdx_module_args' used as input.
*
* __tdcall_saved_ret() function ABI:
*
* @fn (RDI) - TDCALL leaf ID, moved to RAX
* @args (RSI) - struct tdx_module_args for input/output
*
* All registers in @args are used as input/output registers.
*
* On successful completion, return the hypercall error code.
*/
SYM_FUNC_START(__tdcall_saved_ret)
TDX_MODULE_CALL host=0 ret=1 saved=1
SYM_FUNC_END(__tdcall_saved_ret)
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