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2015-09-07target-arm/arm-semi.c: SYS_EXIT on A64 takes a parameter blockPeter Maydell
The A64 semihosting API changes the interface for SYS_EXIT so that instead of taking a single exception type in a register, it takes a parameter block containing the exception type and a sub-code. Implement this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: Christopher Covington <cov@codeaurora.org> Message-id: 1439483745-28752-9-git-send-email-peter.maydell@linaro.org
2015-09-07target-arm/arm-semi.c: Implement A64 specific SyncCacheRange callPeter Maydell
The A64 semihosting ABI defines a new call SyncCacheRange for doing a 'clean D-cache and invalidate I-cache' sequence. Since QEMU doesn't implement caches, we can implement this as a nop. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Christopher Covington <christopher.covington@linaro.org> Tested-by: Christopher Covington <cov@codeaurora.org> Message-id: 1439483745-28752-8-git-send-email-peter.maydell@linaro.org
2015-09-07target-arm/arm-semi.c: Support widening APIs to 64 bitsPeter Maydell
The 64-bit A64 semihosting API has some pervasive changes from the 32-bit version: * all parameter blocks are arrays of 64-bit values, not 32-bit * the semihosting call number is passed in W0 * the return value is a 64-bit value in X0 Implement the necessary handling for this widening. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Christopher Covington <christopher.covington@linaro.org> Tested-by: Christopher Covington <cov@codeaurora.org> Message-id: 1439483745-28752-7-git-send-email-peter.maydell@linaro.org
2015-09-07target-arm/arm-semi.c: Factor out repeated 'return env->regs[0]'Peter Maydell
Factor out a repeated pattern in the semihosting code: gdb_do_syscall(arm_semi_cb, "system,%s", arg0, (int)arg1+1); /* arm_semi_cb sets env->regs[0] to the syscall return value */ return env->regs[0]; For A64 the return value will go in a different register; pull the sequence out into its own function that passes the return value in a static variable rather than overloading regs[0] for the purpose, so the code will work on both A32/T32 and A64. Note that the lack-of-synchronization bug noted in the FIXME comment is not introduced by this commit, but was already present. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Christopher Covington <christopher.covington@linaro.org> Tested-by: Christopher Covington <cov@codeaurora.org> Message-id: 1439483745-28752-5-git-send-email-peter.maydell@linaro.org
2015-09-07target-arm/arm-semi.c: Fix broken SYS_WRITE0 via gdbPeter Maydell
A spurious trailing "\n" in the gdb syscall format string used for SYS_WRITE0 meant that gdb would reject the remote syscall, with the effect that the output from the guest was silently dropped. Remove the newline so that gdb accepts the packet. Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-26target-arm: default empty semihosting cmdlineLiviu Ionescu
If neither explicit semihosting args nor -kernel are used, make SYS_GET_CMDLINE return an empty string. Signed-off-by: Liviu Ionescu <ilg@livius.net> Message-id: AC7B5AFC-06AE-4FAD-9852-B65708E80E09@livius.net Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-19semihosting: add --semihosting-config arg sub-argumentLeon Alrae
Add new "arg" sub-argument to the --semihosting-config allowing the user to pass multiple input arguments separately. It is required for example by UHI semihosting to construct argc and argv. Also, update ARM semihosting to support new option (at the moment it is the only target which cares about arguments). If the semihosting is enabled and no semihosting args have been specified, then fall back to -kernel/-append. The -append string is split on whitespace before initializing semihosting.argv[1..n]; this is different from what QEMU MIPS machines' pseudo-bootloaders do (i.e. argv[1] contains the whole -append), but is more intuitive from UHI user's point of view and Linux kernel just does not care as it concatenates argv[1..n] into single cmdline string anyway. Signed-off-by: Leon Alrae <leon.alrae@imgtec.com> Message-id: 1434643256-16858-3-git-send-email-leon.alrae@imgtec.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-11Pass semihosting exit code back to system.Liviu Ionescu
In order to run unit tests under semihosting, it is necessary to pass the application exit code back to the system. ARM defines only the code to be used for non-error application exit (ADP_Stopped_ApplicationExit), all other codes should return non-zero exit codes. This patch checks if the application code passed via TARGET_SYS_EXIT is ADP_Stopped_ApplicationExit, and return 0, otherwise return 1. Signed-off-by: Liviu Ionescu <ilg@livius.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-03-13cpu: Move opaque field from CPU_COMMON to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23exec: Change cpu_memory_rw_debug() argument to CPUStateAndreas Färber
Propagate X86CPU in kvmvapic for simplicity. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23gdbstub: Change syscall callback argument to CPUStateAndreas Färber
Callback implementations were specific to arm and m68k, so can easily cast to ARMCPU and M68kCPU respectively. Prepares for changing GDBState::c_cpu to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28cpu: Turn cpu_dump_{state,statistics}() into CPUState hooksAndreas Färber
Make cpustats monitor command available unconditionally. Prepares for changing kvm_handle_internal_error() and kvm_cpu_exec() arguments to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-04-15arm: fix location of some include filesPeter Maydell
The recent rearrangement of include files had some minor errors: devices.h is not ARM specific and should not be in arm/ arm.h should be in arm/ Move these two headers to correct this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08hw: move headers to include/Paolo Bonzini
Many of these should be cleaned up with proper qdev-/QOM-ification. Right now there are many catch-all headers in include/hw/ARCH depending on cpu.h, and this makes it necessary to compile these files per-target. However, fixing this does not belong in these patches. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19exec: move include files to include/exec/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-24arm-semi.c: Handle get/put_user() failure accessing argumentsPeter Maydell
Rework the handling of arguments to ARM semihosting calls so that we handle a possible failure return from get_user_ual() or put_user_ual(). (This incidentally silences a lot of warnings from clang about "expression result unused"). Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2012-08-22arm-semi: don't leak 1KB user string lock buffer upon TARGET_SYS_OPENJim Meyering
Always call unlock_user before returning. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-08-10target-arm: Fix typos in commentsPeter Maydell
Fix a variety of typos in comments in target-arm files. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@petalogix.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-06-07build: move obj-TARGET-y variables to nested Makefile.objsPaolo Bonzini
Also drop duplicate occurrence of device-hotplug.o. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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