diff options
| -rwxr-xr-x | ArmPkg/Library/SemihostLib/Arm/GccSemihost.S | 35 | ||||
| -rw-r--r-- | ArmPkg/Library/SemihostLib/Arm/SemihostPrivate.h | 24 | ||||
| -rw-r--r-- | ArmPkg/Library/SemihostLib/SemihostLib.inf | 1 |
3 files changed, 59 insertions, 1 deletions
diff --git a/ArmPkg/Library/SemihostLib/Arm/GccSemihost.S b/ArmPkg/Library/SemihostLib/Arm/GccSemihost.S new file mode 100755 index 0000000000..aa8b16ad51 --- /dev/null +++ b/ArmPkg/Library/SemihostLib/Arm/GccSemihost.S @@ -0,0 +1,35 @@ +#------------------------------------------------------------------------------ +# +# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR> +# +# This program and the accompanying materials +# are licensed and made available under the terms and conditions of the BSD License +# which accompanies this distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php +# +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +#------------------------------------------------------------------------------ + +.text +.align 2 + +.globl ASM_PFX(GccSemihostCall) +INTERWORK_FUNC(GccSemihostCall) + +/* + 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 + */ +ASM_PFX(GccSemihostCall): + svc #0x123456 + bx lr + + diff --git a/ArmPkg/Library/SemihostLib/Arm/SemihostPrivate.h b/ArmPkg/Library/SemihostLib/Arm/SemihostPrivate.h index 7763d07abc..f8a76528f1 100644 --- a/ArmPkg/Library/SemihostLib/Arm/SemihostPrivate.h +++ b/ArmPkg/Library/SemihostLib/Arm/SemihostPrivate.h @@ -42,7 +42,7 @@ typedef struct { UINT32 CommandLength; } SEMIHOST_SYSTEM_BLOCK; -#ifdef __CC_ARM +#if defined(__CC_ARM) #if defined(__thumb__) #define SWI 0xAB @@ -141,6 +141,28 @@ _Semihost_SYS_SYSTEM( #define Semihost_SYS_REMOVE(RemoveBlock) _Semihost_SYS_REMOVE(0x0E, RemoveBlock) #define Semihost_SYS_SYSTEM(SystemBlock) _Semihost_SYS_SYSTEM(0x12, SystemBlock) +#elif defined(__GNUC__) // __CC_ARM + +#define SEMIHOST_SUPPORTED TRUE + +UINT32 +GccSemihostCall ( + IN UINT32 Operation, + IN UINTN SystemBlockAddress + ); // __attribute__ ((interrupt ("SVC"))); + +#define Semihost_SYS_OPEN(OpenBlock) GccSemihostCall(0x01, (UINTN)(OpenBlock)) +#define Semihost_SYS_CLOSE(Handle) GccSemihostCall(0x02, (UINTN)(Handle)) +#define Semihost_SYS_WRITE0(String) GccSemihostCall(0x04, (UINTN)(String)) +#define Semihost_SYS_WRITEC(Character) GccSemihostCall(0x03, (UINTN)(Character)) +#define Semihost_SYS_WRITE(WriteBlock) GccSemihostCall(0x05, (UINTN)(WriteBlock)) +#define Semihost_SYS_READ(ReadBlock) GccSemihostCall(0x06, (UINTN)(ReadBlock)) +#define Semihost_SYS_READC() GccSemihostCall(0x07, (UINTN)(0)) +#define Semihost_SYS_SEEK(SeekBlock) GccSemihostCall(0x0A, (UINTN)(SeekBlock)) +#define Semihost_SYS_FLEN(Handle) GccSemihostCall(0x0C, (UINTN)(Handle)) +#define Semihost_SYS_REMOVE(RemoveBlock) GccSemihostCall(0x0E, (UINTN)(RemoveBlock)) +#define Semihost_SYS_SYSTEM(SystemBlock) GccSemihostCall(0x12, (UINTN)(SystemBlock)) + #else // __CC_ARM #define SEMIHOST_SUPPORTED FALSE diff --git a/ArmPkg/Library/SemihostLib/SemihostLib.inf b/ArmPkg/Library/SemihostLib/SemihostLib.inf index 61a82b8ab1..f575a35f05 100644 --- a/ArmPkg/Library/SemihostLib/SemihostLib.inf +++ b/ArmPkg/Library/SemihostLib/SemihostLib.inf @@ -28,6 +28,7 @@ # VALID_ARCHITECTURES = ARM
#
[Sources.ARM]
+ Arm/GccSemihost.S | GCC
Arm/SemihostLib.c
|