Wrapper for function calls that follow the ARM SMC/HVC calling convention. More...

#include <arm_smccc>

Inherits L4::Kobject_0t< Derived, PROTO, S_DEMAND >.

Collaboration diagram for L4::Arm_smccc:

Public Member Functions
l4_msgtag_t	call (l4_umword_t func, l4_umword_t in0, l4_umword_t in1, l4_umword_t in2, l4_umword_t in3, l4_umword_t in4, l4_umword_t in5, l4_umword_t out0, l4_umword_t out1, l4_umword_t out2, l4_umword_t out3, l4_umword_t client_id)
	ARM SMC/HVC function call.

Detailed Description

Wrapper for function calls that follow the ARM SMC/HVC calling convention.

See l4_arm_smccc_call() for the corresponding C interface.

Definition at line 24 of file arm_smccc.

Member Function Documentation

ARM SMC/HVC function call.

The input parameters consist of a function identifier, 6 arguments and a client id. Results are returned in 4 output parameters.

Parameters

	func	Function identifier. Bit 31 has to be set: This marks the call as Fast Call. Yielding Calls (bit 31 unset) are rejected by the kernel. Bit 30 defines the calling convention: Bit 30 == 1: 64-bit calling convention. Bit 30 == 0: 32-bit calling convention. Bits 24..29 determine the service call ID. Only service IDs >= 0x30000000 (Trusted Application Calls and Trusted OS Calls) are allowed.
[in]	in0	First input parameter.
[in]	in1	Second input parameter.
[in]	in2	Third input parameter.
[in]	in3	Fourth input parameter.
[in]	in4	Fifth input parameter.
[in]	in5	Sixth input parameter.
[out]	out0	First output parameter.
[out]	out1	Second output parameter.
[out]	out2	Third output parameter.
[out]	out3	Fourth output parameter.
[in]	client_id	Client ID. According to the specification, this value might be ignored by certain functions.

Return values

-L4_ENOSYS	Either bit 31 of the function call not set or service ID < 0x30000000.
-L4_EINVAL	Invalid number of parameters.
<0	Other L4 error.
0	Success.

The documentation for this class was generated from the following file: