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author | Giacomo Travaglini <giacomo.travaglini@arm.com> | 2018-02-13 14:01:57 +0000 |
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committer | Giacomo Travaglini <giacomo.travaglini@arm.com> | 2018-02-20 13:30:02 +0000 |
commit | 73dcf05f633b5e3a7d9a16338a64c1832ef38388 (patch) | |
tree | b66442229292c0b699e5ae7f6c1b236648c21a87 /src/arch/arm/isa/formats/breakpoint.isa | |
parent | 26b03914d7dbcf6b6c8c0a9c08d4e3ff81365376 (diff) | |
download | gem5-73dcf05f633b5e3a7d9a16338a64c1832ef38388.tar.xz |
arch-arm: Add AArch32 HLT Semihosting interface
AArch32 HLT instruction is now able to issue Arm Semihosting commands as
the AArch64 counterpart in either Arm and Thumb mode.
Change-Id: I77da73d2e6a9288c704a5f646f4447022517ceb6
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/8372
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Diffstat (limited to 'src/arch/arm/isa/formats/breakpoint.isa')
-rw-r--r-- | src/arch/arm/isa/formats/breakpoint.isa | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/arch/arm/isa/formats/breakpoint.isa b/src/arch/arm/isa/formats/breakpoint.isa index a22f2de7a..4db470b1e 100644 --- a/src/arch/arm/isa/formats/breakpoint.isa +++ b/src/arch/arm/isa/formats/breakpoint.isa @@ -1,6 +1,6 @@ // -*- mode:c++ -*- -// Copyright (c) 2010 ARM Limited +// Copyright (c) 2010,2018 ARM Limited // All rights reserved // // The license below extends only to copyright in the software and shall @@ -87,7 +87,17 @@ output exec {{ } }}; -def format Breakpoint() {{ - decode_block = 'return new Breakpoint(machInst);\n' +def format ArmBkptHlt() {{ + decode_block = ''' + { + if (bits(machInst, 21)) { + return new Breakpoint(machInst); + } else { + uint32_t imm16 = (bits(machInst, 19, 8) << 4) | + (bits(machInst, 3, 0) << 0); + return new Hlt(machInst, imm16); + } + } + ''' }}; |