4059386c70
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
32 lines
904 B
ArmAsm
32 lines
904 B
ArmAsm
#------------------------------------------------------------------------------
|
|
#
|
|
# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
#include <AsmMacroIoLib.h>
|
|
|
|
/*
|
|
Semihosting operation request mechanism
|
|
|
|
SVC 0x123456 in ARM state (for all architectures)
|
|
SVC 0xAB in Thumb state (excluding ARMv7-M)
|
|
BKPT 0xAB for ARMv7-M (Thumb-2 only)
|
|
|
|
R0 - operation type
|
|
R1 - block containing all other parametes
|
|
|
|
lr - must be saved as svc instruction will cause an svc exception and write
|
|
the svc lr register. That happens to be the one we are using, so we must
|
|
save it or we will not be able to return.
|
|
*/
|
|
ASM_FUNC(GccSemihostCall)
|
|
stmfd sp!, {lr}
|
|
svc #0x123456
|
|
ldmfd sp!, {lr}
|
|
bx lr
|
|
|
|
|