bwlp/qemu.git/target/hppa/int_helper.c, branch spice_video_codecs

hppa: Add support for an emulated TOC/NMI button.

2022-02-02T17:46:42+00:00

Almost all PA-RISC machines have either a button that is labeled with 'TOC' or a BMC/GSP function to trigger a TOC. TOC is a non-maskable interrupt that is sent to the processor. This can be used for diagnostic purposes like obtaining a stack trace/register dump or to enter KDB/KGDB in Linux. This patch adds support for such an emulated TOC button. It wires up the qemu monitor "nmi" command to trigger a TOC. For that it provides the hppa_nmi function which is assigned to the nmi_monitor_handler function pointer. When called it raises the EXCP_TOC hardware interrupt in the hppa_cpu_do_interrupt() function. The interrupt function then calls the architecturally defined TOC function in SeaBIOS-hppa firmware (at fixed address 0xf0000000). According to the PA-RISC PDC specification, the SeaBIOS firmware then writes the CPU registers into PIM (processor internal memmory) for later analysis. In order to write all registers it needs to know the contents of the CPU "shadow registers" and the IASQ- and IAOQ-back values. The IAOQ/IASQ values are provided by qemu in shadow registers when entering the SeaBIOS TOC function. This patch adds a new aritificial opcode "getshadowregs" (0xfffdead2) which restores the original values of the shadow registers. With this opcode SeaBIOS can store those registers as well into PIM before calling an OS-provided TOC handler. To trigger a TOC, switch to the qemu monitor with Ctrl-A C, and type in the command "nmi". After the TOC started the OS-debugger, exit the qemu monitor with Ctrl-A C. Signed-off-by: Helge Deller Reviewed-by: Richard Henderson

target/hppa: Restrict cpu_exec_interrupt() handler to sysemu

2021-09-14T19:00:21+00:00

Restrict cpu_exec_interrupt() and its callees to sysemu. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Warner Losh Reviewed-by: Richard Henderson Message-Id: <20210911165434.531552-10-f4bug@amsat.org> Signed-off-by: Richard Henderson

overall/alpha tcg cpus|hppa: Fix Lesser GPL version number

2020-11-15T15:43:54+00:00

There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. Signed-off-by: Chetan Pant Message-Id: <20201023123353.19796-1-chetan4windows@gmail.com> Reviewed-by: Thomas Huth Signed-off-by: Thomas Huth

hw/core: Move cpu.c, cpu.h from qom/ to hw/core/

2019-08-21T11:24:01+00:00

Suggested-by: Daniel P. Berrangé Signed-off-by: Markus Armbruster Message-Id: <20190709152053.16670-2-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé Tested-by: Philippe Mathieu-Daudé [Rebased onto merge commit 95a9457fd44; missed instances of qom/cpu.h in comments replaced]

target/hppa: Use env_cpu, env_archcpu

2019-06-10T14:03:34+00:00

Cleanup in the boilerplate that each target must define. Replace hppa_env_get_cpu with env_archcpu. The combination CPU(hppa_env_get_cpu) should have used ENV_GET_CPU to begin; use env_cpu now. Reviewed-by: Alistair Francis Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson

target: Do not include "exec/exec-all.h" if it is not necessary

2018-06-01T12:15:10+00:00

target/hppa: Include "qemu/log.h" to use qemu_log()

2018-05-31T17:12:13+00:00

Since his inception in 61766fe9e2d, this file uses the qemu_log() API from "qemu/log.h". Include it to allow further includes cleanup. Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20180528232719.4721-9-f4bug@amsat.org> Acked-by: Michael S. Tsirkin Signed-off-by: Paolo Bonzini

target/hppa: Implement the interval timer

2018-01-30T18:22:26+00:00

Signed-off-by: Richard Henderson

target/hppa: Implement external interrupts

2018-01-30T18:22:26+00:00

Signed-off-by: Richard Henderson

target/hppa: Implement tlb_fill

2018-01-30T18:22:15+00:00

However since HPPA has a software-managed TLB, and the relevant TLB manipulation instructions are not implemented, this does not actually do anything. Signed-off-by: Richard Henderson