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unicorn/qemu
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Mark Cave-Ayland 0be85bf91a target/m68k: don't set SSW ATC bit for physical bus errors 
If a NuBus slot doesn't contain a card, the Quadra hardware generates a physical
bus error if the CPU attempts to access the slot address space. Both Linux and
MacOS use a separate bus error handler during NuBus accesses in order to detect
and recover when addressing empty slots.

According to the MC68040 users manual the ATC bit of the SSW is used to
distinguish between ATC faults and physical bus errors. MacOS specifically checks
the stack frame generated by a NuBus error and panics if the SSW ATC bit is set.

Update m68k_cpu_transaction_failed() so that the SSW ATC bit is not set if the
memory API returns MEMTX_DECODE_ERROR which will be used to indicate that an
access to an empty NuBus slot occurred.

Backports d6cbd8f7a19e6f0fd22a598aad992c4913f481f2
2021-03-12 14:29:37 -05:00
..
accel qemu/atomic.h: rename atomic_ to qatomic_ 2021-03-08 14:34:35 -05:00
crypto
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 softfloat: Define misc operations for bfloat16 2021-02-27 16:41:46 -05:00
hw target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
include include/exec: lightly re-arrange TranslationBlock 2021-03-09 13:25:04 -05:00
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 qemu/atomic.h: rename atomic_ to qatomic_ 2021-03-08 14:34:35 -05:00
scripts decodetree: Open files with encoding='utf-8' 2021-03-04 13:34:08 -05:00
target target/m68k: don't set SSW ATC bit for physical bus errors 2021-03-12 14:29:37 -05:00
tcg tcg: Split out tcg_raise_tb_overflow 2021-03-09 13:23:02 -05:00
util qemu/atomic.h: rename atomic_ to qatomic_ 2021-03-08 14:34:35 -05:00
aarch64.h target/arm: Speed up aarch64 TBL/TBX 2021-03-08 11:31:24 -05:00
aarch64eb.h target/arm: Speed up aarch64 TBL/TBX 2021-03-08 11:31:24 -05:00
accel.c target/arm: Set instance_align on CPUARM TypeInfo 2021-03-01 18:58:44 -05:00
arm.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
armeb.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 2019-11-28 02:54:44 -05:00
configure configure: Support -static-pie if requested 2020-04-30 07:09:34 -04:00
COPYING
COPYING.LIB
cpus.c qemu/atomic.h: rename atomic_ to qatomic_ 2021-03-08 14:34:35 -05:00
exec.c qemu/atomic.h: rename atomic_ to qatomic_ 2021-03-08 14:34:35 -05:00
gen_all_header.sh
glib_compat.c tcg: Introduce TYPE_CONST temporaries 2021-03-03 21:29:40 -05:00
header_gen.py target/riscv/pmp: Raise exception if no PMP entry is configured 2021-03-08 15:39:55 -05:00
ioport.c
LICENSE
m68k.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
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 qemu/atomic.h: rename atomic_ to qatomic_ 2021-03-08 14:34:35 -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
mips.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
mips64.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
mips64el.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
mipsel.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
powerpc.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
qemu-timer.c
riscv32.h target/riscv/pmp: Raise exception if no PMP entry is configured 2021-03-08 15:39:55 -05:00
riscv64.h target/riscv/pmp: Raise exception if no PMP entry is configured 2021-03-08 15:39:55 -05:00
rules.mak
sparc.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
sparc64.h qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00
unicorn_common.h tcg: Move sorted_args into TCGArgConstraint.sort_index 2021-03-01 19:33:45 -05:00
VERSION Open 6.0 development tree 2021-03-02 13:39:05 -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 qemu/compiler: Split out qemu_build_not_reached_always 2021-03-04 15:23:27 -05:00