2281eb6f48
Problems have been encountered because some of the source files have execute permission set. This can cause git to report them as changed when they are checked out onto a file system with inherited permissions. This has been seen using Cygwin, MinGW and PowerShell Git. This patch makes no change to source file content, and only aims to correct the file modes/permissions. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Evan Lloyd <evan.lloyd@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19778 6f19259b-4bc3-4df7-8a09-765794883524
42 lines
1.3 KiB
ArmAsm
42 lines
1.3 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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#------------------------------------------------------------------------------
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.text
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.align 2
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.globl ASM_PFX(GccSemihostCall)
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INTERWORK_FUNC(GccSemihostCall)
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/*
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Semihosting operation request mechanism
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SVC 0x123456 in ARM state (for all architectures)
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SVC 0xAB in Thumb state (excluding ARMv7-M)
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BKPT 0xAB for ARMv7-M (Thumb-2 only)
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R0 - operation type
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R1 - block containing all other parametes
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lr - must be saved as svc instruction will cause an svc exception and write
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the svc lr register. That happens to be the one we are using, so we must
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save it or we will not be able to return.
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*/
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ASM_PFX(GccSemihostCall):
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stmfd sp!, {lr}
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svc #0x123456
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ldmfd sp!, {lr}
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bx lr
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