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unicorn/qemu
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Peter Maydell 5c93f43eb9 target/arm: Implement ARMv8.1-PMU extension 
The ARMv8.1-PMU extension requires:
* the evtCount field in PMETYPER<n>_EL0 is 16 bits, not 10
* MDCR_EL2.HPMD allows event counting to be disabled at EL2
* two new required events, STALL_FRONTEND and STALL_BACKEND
* ID register bits in ID_AA64DFR0_EL1 and ID_DFR0

We already implement the 16-bit evtCount field and the
HPMD bit, so all that is missing is the two new events:
STALL_FRONTEND
"counts every cycle counted by the CPU_CYCLES event on which no
operation was issued because there are no operations available
to issue to this PE from the frontend"
STALL_BACKEND
"counts every cycle counted by the CPU_CYCLES event on which no
operation was issued because the backend is unable to accept
any available operations from the frontend"

QEMU never stalls in this sense, so our implementation is trivial:
always return a zero count.

Backports commit 0727f63b1ecf765ebc48266f616f8fc362dc7fbc from qemu
2020-03-21 18:34:33 -04:00
..
accel Ensure that PC is not fixed up when code tracing or timing. (#1179) 2020-01-14 09:52:25 -05:00
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
default-configs target/riscv: Initial introduction of the RISC-V target 2019-03-08 21:46:10 -05:00
docs docs/devel/memory.txt: Document _with_attrs accessors 2018-10-04 04:46:26 -04:00
fpu fpu: rename softfloat-specialize.h -> .inc.c 2019-11-18 21:12:30 -05:00
hw Expose different 32-bit ARM CPU models to users via UC_MODE flags (#1165) 2020-01-14 09:37:21 -05:00
include tcg: Add support for a helper with 7 arguments 2020-03-21 16:53:56 -04:00
qapi qapi: Rewrite string-input-visitor's integer and list parsing 2018-12-18 04:57:25 -05:00
qobject qstring: Move qstring_from_substr()'s @end one to the right 2018-08-02 21:24:19 -04:00
qom cpu: Move icount_decr to CPUNegativeOffsetState 2019-06-13 15:34:28 -04:00
scripts decodetree: Suppress redundant declaration warnings 2019-11-18 21:21:30 -05:00
target target/arm: Implement ARMv8.1-PMU extension 2020-03-21 18:34:33 -04:00
tcg tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
util util/cutils: Turn FIXME comment into QEMU_BUILD_BUG_ON() 2020-01-14 08:04:30 -05:00
aarch64.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
aarch64eb.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
armeb.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 2019-11-28 02:54:44 -05:00
configure configure: Require Python >= 3.5 2020-01-14 08:09:23 -05:00
COPYING
COPYING.LIB
cpus.c Include qapi/error.h exactly where needed 2018-03-07 12:26:38 -05:00
exec.c Memory: Enable writeback for given memory region 2020-01-14 07:44:24 -05:00
gen_all_header.sh
glib_compat.c target/arm: Add VHE system register redirection and aliasing 2020-03-21 15:57:03 -04:00
header_gen.py tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE
m68k.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
Makefile Makefile: Rename targets for make recursion 2019-08-08 17:26:49 -04:00
Makefile.objs qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
Makefile.target configure: Remove old -fno-gcse workaround for GCC 4.6.x and 4.7.[012] 2018-12-18 03:52:36 -05:00
memory.c Memory: Enable writeback for given memory region 2020-01-14 07:44:24 -05:00
memory_ldst.inc.c memory: Single byte swap along the I/O path 2020-01-07 19:12:04 -05:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
mips.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
mips64.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
mips64el.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
mipsel.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
powerpc.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
riscv32.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
riscv64.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
sparc64.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00
unicorn_common.h unicorn_common: Fix unicorn memory functions failing 2018-09-03 10:40:14 -04:00
VERSION Open 5.0 development tree 2020-01-07 17:50:51 -05:00
vl.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
vl.h
x86_64.h tcg: Add tcg_gen_gvec_5_ptr 2020-03-21 16:54:01 -04:00