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2022-06-28target/m68k: Make semihosting system onlyRichard Henderson1-5/+0
While we had a call to do_m68k_semihosting in linux-user, it wasn't actually reachable. We don't include DISAS_INSN(halt) as an instruction unless system mode. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Remove qemu_semihosting_console_outsRichard Henderson1-17/+0
This function has been replaced by *_write. Reviewed-by: Luc Michel <lmichel@kalray.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Remove qemu_semihosting_console_outcRichard Henderson1-16/+0
This function has been replaced by *_write. Reviewed-by: Luc Michel <lmichel@kalray.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Create qemu_semihosting_guestfd_initRichard Henderson1-0/+9
For arm-compat, initialize console_{in,out}_gf; otherwise, initialize stdio file descriptors. This will go some way to cleaning up arm-compat, and will allow other semihosting to use normal stdio. Reviewed-by: Luc Michel <lmichel@kalray.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Create qemu_semihosting_console_writeRichard Henderson1-0/+5
Will replace qemu_semihosting_console_{outs,outc}, but we need more plumbing first. Reviewed-by: Luc Michel <lmichel@kalray.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Expand qemu_semihosting_console_inc to readRichard Henderson1-4/+6
Allow more than one character to be read at one time. Will be used by m68k and nios2 semihosting for stdio. Reviewed-by: Luc Michel <lmichel@kalray.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Pass CPUState to qemu_semihosting_console_incRichard Henderson1-1/+1
We don't need CPUArchState, and we do want the CPUState of the thread performing the operation -- use this instead of current_cpu. Reviewed-by: Luc Michel <lmichel@kalray.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-28semihosting: Return void from do_common_semihostingRichard Henderson3-3/+3
Perform the cleanup in the FIXME comment in common_semi_gdb_syscall. Do not modify guest registers until the syscall is complete, which in the gdbstub case is asynchronous. In the synchronous non-gdbstub case, use common_semi_set_ret to set the result. Merge set_swi_errno into common_semi_cb. Rely on the latter for combined return value / errno setting. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-24linux-user: Adjust child_tidptr on set_tid_address() syscallHelge Deller1-5/+7
Keep track of the new child tidptr given by a set_tid_address() syscall. Do not call the host set_tid_address() syscall because we are emulating the behaviour of writing to child_tidptr in the exit() path. Signed-off-by: Helge Deller<deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <YpH+2sw1PCRqx/te@p100> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-24linux-user: Add partial support for MADV_DONTNEEDIlya Leoshkevich4-6/+68
Currently QEMU ignores madvise(MADV_DONTNEED), which break apps that rely on this for zeroing out memory [1]. Improve the situation by doing a passthrough when the range in question is a host-page-aligned anonymous mapping. This is based on the patches from Simon Hausmann [2] and Chris Fallin [3]. The structure is taken from Simon's patch. The PAGE_MAP_ANONYMOUS bits are superseded by commit 26bab757d41b ("linux-user: Introduce PAGE_ANON"). In the end the patch acts like the one from Chris: we either pass-through the entire syscall, or do nothing, since doing this only partially would not help the affected applications much. Finally, add some extra checks to match the behavior of the Linux kernel [4]. [1] https://gitlab.com/qemu-project/qemu/-/issues/326 [2] https://patchew.org/QEMU/20180827084037.25316-1-simon.hausmann@qt.io/ [3] https://github.com/bytecodealliance/wasmtime/blob/v0.37.0/ci/qemu-madvise.patch [4] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/mm/madvise.c?h=v5.19-rc3#n1368 Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220621144205.158452-1-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-21linux-user/x86_64: Fix ELF_PLATFORMRichard Henderson1-13/+17
We had been using the i686 platform string for x86_64. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1041 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220603213801.64738-1-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-08linux-user/aarch64: Introduce sve_vqRichard Henderson2-8/+14
Add an interface function to extract the digested vector length rather than the raw zcr_el[1] value. This fixes an incorrect return from do_prctl_set_vl where we didn't take into account the set of vector lengths supported by the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220607203306.657998-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-06-02Merge tag 'm68k-for-7.1-pull-request' of https://github.com/vivier/qemu-m68k ↵Richard Henderson3-4/+16
into staging m68k pull request 20220602 - Fixes and cleanup - Implement TRAP opcodes - Enable halt on 68060 # -----BEGIN PGP SIGNATURE----- # # iQJGBAABCAAwFiEEzS913cjjpNwuT1Fz8ww4vT8vvjwFAmKYpeQSHGxhdXJlbnRA # dml2aWVyLmV1AAoJEPMMOL0/L748U+AP/i6EYidZmelIEqOwZTwwzxreF5bTZmAP # v0Hxt3Tef3PWJpLnoCXCsd4othCO3PgHcwtrLff+bkWRl0Wt5CYcq+tTu2im7fIN # zM7RSO00Pt/va7Ss7Ej8d5P5l7uuFqcBFytnitbsNrvHNK4cQ9PVmOkPnJZe0lYt # vA3pUk7giE1KV+/s78Z4VD5CbvwpTRQpDCPDvba7oIP2E9mOELajKtYGh7gvPthx # hrG2L5Ou4rYWxJkpZ0mNyYvoPuGRmzgPImdaDMTPLjEYNJMnnqGCRm+ANtzNk+jy # d/fE/xJ41xvPAt4Q29yCp0vITuRF468M/elp5hQr/rHc6xtitLCi57FhduY9PuL/ # zCMXytgFtnU1C9XhDI/FtQhQxpvEKkZmEJRrAnsuHQKLrHlGoofjBU3whHqfx1zG # qw/cdYqx/RUKKxvmoTbk76doaqfVQvBIx2nB6CsHF3pqOpQETK5TYeId49GCkwgR # 4DmBPL1RZZpkYxi1KEKprcJWMj1l29UTa2dJ+kt9T2YACRm7MYQurP8OCGoHFIX4 # MOr3vdxaqSRU+mE2lWLZWupkZyzFrG/khHSB7A9htTomgbfZLfc0YkHX5kOkHQNq # k4ymLpf16F94aau568HVQO8UZV+1FedtRwJL2EWVqkzKri9rSCCeI8I27HVLjwLP # YzrHwsMVsjgl # =T1g0 # -----END PGP SIGNATURE----- # gpg: Signature made Thu 02 Jun 2022 04:58:28 AM PDT # gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C # gpg: issuer "laurent@vivier.eu" # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [undefined] # gpg: aka "Laurent Vivier <laurent@vivier.eu>" [undefined] # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [undefined] # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * tag 'm68k-for-7.1-pull-request' of https://github.com/vivier/qemu-m68k: target/m68k: Mark helper_raise_exception as noreturn linux-user/strace: Adjust get_thread_area for m68k linux-user/strace: Use is_error in print_syscall_err tests/tcg/m68k: Add trap.c target/m68k: Implement FTRAPcc target/m68k: Implement TRAPV target/m68k: Implement TPF in terms of TRAPcc target/m68k: Implement TRAPcc target/m68k: Fix stack frame for EXCP_ILLEGAL target/m68k: Fix address argument for EXCP_TRACE target/m68k: Fix pc, c flag, and address argument for EXCP_DIV0 target/m68k: Fix address argument for EXCP_CHK target/m68k: Remove retaddr in m68k_interrupt_all linux-user/m68k: Handle EXCP_TRAP1 through EXCP_TRAP15 target/m68k: Fix coding style in m68k_interrupt_all target/m68k: Switch over exception type in m68k_interrupt_all target/m68k: Raise the TRAPn exception with the correct pc target/m68k: Enable halt insn for 68060 target/m68k: Clear mach in m68k_cpu_disas_set_info Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-02linux-user/strace: Adjust get_thread_area for m68kRichard Henderson1-0/+5
Unlike i386, m68k get_thread_area has no arguments. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-17-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02linux-user/strace: Use is_error in print_syscall_errRichard Henderson1-1/+1
Errors are not all negative numbers: use is_error. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-16-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Implement TRAPccRichard Henderson1-0/+1
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/754 Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-11-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Fix address argument for EXCP_TRACERichard Henderson1-0/+3
According to the M68040 Users Manual, section 8.4.3, Six word stack frame (format 2), Trace (and others) is supposed to record the next insn in PC and the address of the trapping instruction in ADDRESS. Create gen_raise_exception_format2 to record the trapping pc in env->mmu.ar. Update m68k_interrupt_all to pass the value to do_stack_frame. Update cpu_loop to handle EXCP_TRACE. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-9-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Fix pc, c flag, and address argument for EXCP_DIV0Richard Henderson1-1/+1
According to the M68040 Users Manual, section 8.4.3, Six word stack frame (format 2), Zero Div (and others) is supposed to record the next insn in PC and the address of the trapping instruction in ADDRESS. While the N, Z and V flags are documented to be undefine on DIV0, the C flag is documented as always cleared. Update helper_div* to take the instruction length as an argument and use raise_exception_format2. Hoist the reset of the C flag above the division by zero check. Update m68k_interrupt_all to pass mmu.ar to do_stack_frame. Update cpu_loop to pass mmu.ar to siginfo.si_addr, as the kernel does in trap_c(). Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-8-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Fix address argument for EXCP_CHKRichard Henderson1-1/+1
According to the M68040 Users Manual, section 8.4.3, Six word stack frame (format 2), CHK, CHK2 (and others) are supposed to record the next insn in PC and the address of the trapping instruction in ADDRESS. Create a raise_exception_format2 function to centralize recording of the trapping pc in mmu.ar, plus advancing to the next insn. Update m68k_interrupt_all to pass mmu.ar to do_stack_frame. Update cpu_loop to pass mmu.ar to siginfo.si_addr, as the kernel does in trap_c(). Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-7-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02linux-user/m68k: Handle EXCP_TRAP1 through EXCP_TRAP15Richard Henderson1-0/+4
These are raised by guest instructions, and should not fall through into the default abort case. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-5-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-06-02target/m68k: Raise the TRAPn exception with the correct pcRichard Henderson1-1/+0
Rather than adjust the PC in all of the consumers, raise the exception with the correct PC in the first place. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220602013401.303699-2-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-26linux-user: Add PowerPC ISA 3.1 and MMA to hwcapJoel Stanley1-0/+4
These are new hwcap bits added for power10. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220524140537.27451-9-lucas.araujo@eldorado.org.br> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2022-05-23linux-user/host/s390: Treat EX and EXRL as writesIlya Leoshkevich1-0/+7
clang-built s390x branch-relative-long test fails on clang-built s390x QEMU due to the following sequence of events: - The test zeroes out a code page, clang generates exrl+xc for this. - do_helper_xc() is called. Clang generates exrl+xc there as well. - Since there already exists a TB for the code in question, its page is read-only and SIGSEGV is raised. - host_signal_handler() calls host_signal_write() and the latter does not recognize exrl as a write. Therefore page_unprotect() is not called and the signal is forwarded to the test. Fix by treating EXRL (and EX, just in case) as writes. There may be false positives, but they will lead only to an extra page_unprotect() call. Reported-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220504114819.1729737-1-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-23linux-user/s390x: Fix unwinding from signal handlersIlya Leoshkevich1-0/+5
Commit 31330e6cecfd ("linux-user/s390x: Implement setup_sigtramp") removed an unused field from rt_sigframe, disturbing offsets of other fields and breaking unwinding from signal handlers (e.g. libgcc's s390_fallback_frame() relies on this struct having a specific layout). Restore the field and add a comment. Reported-by: Ulrich Weigand <ulrich.weigand@de.ibm.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Fixes: 31330e6cecfd ("linux-user/s390x: Implement setup_sigtramp") Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220503225157.1696774-2-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-23linux-user: Remove pointless CPU{ARCH}State castsPhilippe Mathieu-Daudé3-28/+25
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220509205728.51912-4-philippe.mathieu.daude@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-23linux-user: Have do_syscall() use CPUArchState* instead of void*Philippe Mathieu-Daudé6-129/+129
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220509205728.51912-3-philippe.mathieu.daude@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-23linux-user/elfload: Remove pointless non-const CPUArchState castPhilippe Mathieu-Daudé1-1/+1
fill_thread_info() takes a pointer to const. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220509205728.51912-2-philippe.mathieu.daude@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-23linux-user/syscall.c: fix build without RLIMIT_RTTIMEFabrice Fontaine1-0/+2
RLIMIT_RTTIME is not provided by uclibc-ng or by musl prior to version 1.2.0 and https://github.com/bminor/musl/commit/2507e7f5312e79620f6337935d0a6c9045ccba09 resulting in the following build failure since https://git.qemu.org/?p=qemu.git;a=commit;h=244fd08323088db73590ff2317dfe86f810b51d7: ../linux-user/syscall.c: In function 'target_to_host_resource': ../linux-user/syscall.c:1057:16: error: 'RLIMIT_RTTIME' undeclared (first use in this function); did you mean 'RLIMIT_NOFILE'? 1057 | return RLIMIT_RTTIME; | ^~~~~~~~~~~~~ | RLIMIT_NOFILE Fixes: - http://autobuild.buildroot.org/results/22d3b584b704613d030e1ea9e6b709b713e4cc26 Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220523105239.1499162-1-fontaine.fabrice@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-23linux-user: Clean up arg_start/arg_end confusionRichard Henderson4-12/+26
We had two sets of variables: arg_start/arg_end, and arg_strings/env_strings. In linuxload.c, we set the first pair to the bounds of the argv strings, but in elfload.c, we set the first pair to the bounds of the argv pointers and the second pair to the bounds of the argv strings. Remove arg_start/arg_end, replacing them with the standard argc/argv/envc/envp values. Retain arg_strings/env_strings with the meaning we were using in elfload.c. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/714 Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220427025129.160184-1-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-05-11Clean up decorations and whitespace around header guardsMarkus Armbruster1-1/+1
Cleaned up with scripts/clean-header-guards.pl. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20220506134911.2856099-5-armbru@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Handle various SIGILL exceptionsRichard Henderson1-0/+12
We missed out on a couple of exception types that may legitimately be raised by a userland program. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-59-richard.henderson@linaro.org>
2022-04-26target/nios2: Advance pc when raising exceptionsRichard Henderson1-6/+2
The exception return address for nios2 is the instruction after the one that was executing at the time of the exception. We have so far implemented this by advancing the pc during the process of raising the exception. It is perhaps a little less confusing to do this advance in the translator (and helpers) when raising the exception in the first place, so that we may more closely match kernel sources. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20220421151735.31996-58-richard.henderson@linaro.org>
2022-04-26target/nios2: Implement Misaligned destination exceptionRichard Henderson1-0/+6
Indirect branches, plus eret and bret optionally raise an exception when branching to a misaligned address. The exception is required when an mmu is enabled, but enable it always because the fallback behaviour is not documented (though presumably it discards low bits). For the purposes of the linux-user cpu loop, if EXCP_UNALIGN (misaligned data) were to arrive, it would be treated the same as EXCP_UNALIGND (misaligned destination). See the !defined(CONFIG_NIOS2_ALIGNMENT_TRAP) block in kernel/traps.c. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-53-richard.henderson@linaro.org>
2022-04-26target/nios2: Support division error exceptionRichard Henderson1-0/+4
Division may (optionally) raise a division exception. Since the linux kernel has been prepared for this for some time, enable it by default. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-42-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Only initialize SP and PC in target_cpu_copy_regsRichard Henderson2-23/+0
Drop the set of estatus in init_thread; it was clearly intended to be setting the value of CR_STATUS for the application, but we never actually performed that copy. However, the proper value is set in nios2_cpu_reset so we don't need to do anything here. We only initialize SP and EA in init_thread, there's no value in copying other uninitialized data into ENV. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-21-richard.henderson@linaro.org>
2022-04-26target/nios2: Split PC out of env->regs[]Richard Henderson3-14/+13
It is cleaner to have a separate name for this variable. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-17-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Use force_sig_fault for EXCP_DEBUGRichard Henderson1-5/+1
Use the simpler signal interface, which forces us to supply the missing PC value to si_addr. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20220421151735.31996-13-richard.henderson@linaro.org>
2022-04-26target/nios2: Remove nios2_cpu_record_sigsegvRichard Henderson1-10/+0
Since f5ef0e518d0, we have a real page mapped for kuser, which means the special casing for SIGSEGV can go away. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20220421151735.31996-11-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Use QEMU_ESIGRETURN from do_rt_sigreturnRichard Henderson1-8/+4
Drop the kernel-specific "pr2" code structure and use the qemu-specific error return value. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-8-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Remove do_sigreturnRichard Henderson1-7/+0
There is no sigreturn syscall, only rt_sigreturn. This function is unused. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-7-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Handle special qemu syscall return valuesRichard Henderson1-0/+8
Honor QEMU_ESIGRETURN and QEMU_ERESTARTSYS. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-6-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Adjust error returnRichard Henderson1-2/+7
Follow the kernel assembly, which considers all negative return values to be errors. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-5-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Drop syscall 0 "workaround"Richard Henderson1-4/+0
Syscall 0 is __NR_io_setup for this target; there is nothing to work around. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Fixes: a0a839b65b6 ("nios2: Add usermode binaries emulation") Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-4-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Fix clone child returnRichard Henderson1-0/+1
The child side of clone needs to set the secondary syscall return value, r7, to indicate syscall success. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-3-richard.henderson@linaro.org>
2022-04-26linux-user/nios2: Hoist pc advance to the top of EXCP_TRAPRichard Henderson1-2/+8
Note that this advance *should* be done by the translator, as that's the pc value that's supposed to be generated by hardware. However, that's a much larger change across sysemu as well. In the meantime, produce the correct PC for any signals raised by the trap instruction. Note the special case of TRAP_BRKPT, which itself is special cased within the kernel. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220421151735.31996-2-richard.henderson@linaro.org>
2022-04-22target/arm: Change CPUArchState.thumb to boolRichard Henderson1-1/+1
Bool is a more appropriate type for this value. Adjust the assignments to use true/false. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-04-21compiler.h: replace QEMU_NORETURN with G_NORETURNMarc-André Lureau2-2/+3
G_NORETURN was introduced in glib 2.68, fallback to G_GNUC_NORETURN in glib-compat. Note that this attribute must be placed before the function declaration (bringing a bit of consistency in qemu codebase usage). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Warner Losh <imp@bsdimp.com> Message-Id: <20220420132624.2439741-20-marcandre.lureau@redhat.com>
2022-04-21include: rename qemu-common.h qemu/help-texts.hMarc-André Lureau1-1/+1
Suggested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Warner Losh <imp@bsdimp.com> Message-Id: <20220420132624.2439741-7-marcandre.lureau@redhat.com>
2022-04-20Merge tag 'pull-tcg-20220420' of https://gitlab.com/rth7680/qemu into stagingRichard Henderson1-1/+0
Cleanup sysemu/tcg.h usage. Fix indirect lowering vs cond branches Remove ATOMIC_MMU_IDX Add tcg_constant_ptr # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmJgW38dHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV8tpggApfg2CDI0bRMDBh0g # 04/xwNnzHuSa84/ocMOMUfD5pvBblUmeTH8fAwqcAPDM/EEZwWZl2V1bYzuIrbmR # 8zV+r1cOenDF5Tz8PWfy8XssinTVtTWh/TE0XNV9R/SbEM9eMsjHNu5osKVuLuq1 # rnHWZf8LuY7xGsy4GYqPN0dLE6HtQOfpj/eLGRAj9mZ7re0jKeWg3GdxYoiYDmks # NKmNHYcWD+SjjFvXlOafniQsHbBZmQc/qp7AShG/+VcYY9o1VfncWD6I2dV13RdB # N7++ZhGyQR4NOVo6CN1zLKhfuJqzH2q+qJ7vQ3xtXNAk53LGQ91zjoE+3KaJTrcy # dmnLUw== # =aKdS # -----END PGP SIGNATURE----- # gpg: Signature made Wed 20 Apr 2022 12:14:07 PM PDT # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate] * tag 'pull-tcg-20220420' of https://gitlab.com/rth7680/qemu: tcg: Add tcg_constant_ptr accel/tcg: Remove ATOMIC_MMU_IDX tcg: Fix indirect lowering vs TCG_OPF_COND_BRANCH Don't include sysemu/tcg.h if it is not necessary Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-04-20Don't include sysemu/tcg.h if it is not necessaryThomas Huth1-1/+0
This header only defines the tcg_allowed variable and the tcg_enabled() function - which are not required in many files that include this header. Drop the #include statement there. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20220315144107.1012530-1-thuth@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
generated by cgit v1.1 at 2024-10-14 09:25:55 +0000