Commit Graph

369 Commits

Author SHA1 Message Date
Richard Henderson
cc37d98bfb *: Add missing includes of qemu/error-report.h
This had been pulled in via qemu/plugin.h from hw/core/cpu.h,
but that will be removed.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230310195252.210956-5-richard.henderson@linaro.org>
[AJB: add various additional cases shown by CI]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230315174331.2959-15-alex.bennee@linaro.org>
Reviewed-by: Emilio Cota <cota@braap.org>
2023-03-22 15:06:57 +00:00
Max Filippov
d2796be69d linux-user: add support for xtensa FDPIC
Define xtensa-specific info_is_fdpic and fill in FDPIC-specific
registers in the xtensa version of init_thread.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Message-Id: <20230205061230.544451-1-jcmvbkbc@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2023-03-10 20:42:00 +01:00
Ilya Leoshkevich
7c10cb38cc accel/tcg: Add debuginfo support
Add libdw-based functions for loading and querying debuginfo. Load
debuginfo from the system and the linux-user loaders.

This is useful for the upcoming perf support, which can then put
human-readable guest symbols instead of raw guest PCs into perfmap and
jitdump files.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230112152013.125680-3-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-01-16 10:14:12 -10:00
Jiaxun Yang
fbf47c18aa linux-user: Set ELF_BASE_PLATFORM for MIPS
Match most appropriate base platform string based on insn_flags.
Logic is aligned with aligned with set_isa() from
arch/mips/kernel/cpu-probe.c in Linux kernel.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220803103009.95972-3-jiaxun.yang@flygoat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27 13:19:05 +02:00
Jiaxun Yang
fcdc0ab4b4 linux-user: Introduce stubs for ELF AT_BASE_PLATFORM
AT_BASE_PLATFORM is a elf auxiliary vector pointing to a string
to pass some architecture information.
See getauxval(3) man-page.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220803103009.95972-2-jiaxun.yang@flygoat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27 13:19:05 +02:00
Helge Deller
f43882052f linux-user/hppa: Drop stack guard page on hppa target
The stack-overflow check when building the "grep" debian package fails
on the debian hppa target. Reason is, that the guard page at the top
of the stack (which is added by qemu) prevents the fault handler in the
grep program to properly detect the stack overflow.

The Linux kernel on a physical machine doesn't install a guard page
either, so drop it and as such fix the build of "grep".

Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20220924114501.21767-5-deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27 09:33:56 +02:00
Richard Henderson
872f3d046f linux-user: Honor PT_GNU_STACK
Map the stack executable if required by default or on demand.

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06 08:04:25 +01:00
Richard Henderson
d461b73ec0 linux-user/x86_64: Allocate vsyscall page as a commpage
We're about to start validating PAGE_EXEC, which means that we've
got to mark the vsyscall page executable.  We had been special
casing this entirely within translate.

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06 08:04:25 +01:00
Richard Henderson
eee816c0b9 linux-user/hppa: Allocate page zero as a commpage
We're about to start validating PAGE_EXEC, which means that we've
got to mark page zero executable.  We had been special casing this
entirely within translate.

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06 07:32:35 +01:00
Richard Henderson
fbd3c4cff6 linux-user/arm: Mark the commpage executable
We're about to start validating PAGE_EXEC, which means
that we've got to mark the commpage executable.  We had
been placing the commpage outside of reserved_va, which
was incorrect and lead to an abort.

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06 07:32:35 +01:00
Richard Henderson
f9982ceaf2 linux-user/aarch64: Add SME related hwcap entries
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220708151540.18136-46-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11 13:43:52 +01:00
Song Gao
3418fe25fa linux-user: Add LoongArch elf support
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220624031049.1716097-4-gaosong@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-04 11:08:57 +05:30
Richard Henderson
9263ba8473 linux-user/x86_64: Fix ELF_PLATFORM
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>
2022-06-21 20:15:39 +02:00
Joel Stanley
96c343cc77 linux-user: Add PowerPC ISA 3.1 and MMA to hwcap
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>
2022-05-26 17:11:33 -03:00
Philippe Mathieu-Daudé
2f6f4290e0 linux-user/elfload: Remove pointless non-const CPUArchState cast
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>
2022-05-23 22:47:19 +02:00
Richard Henderson
60f1c8017a linux-user: Clean up arg_start/arg_end confusion
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>
2022-05-23 08:15:19 +02:00
Richard Henderson
dd4c6ee227 linux-user/nios2: Only initialize SP and PC in target_cpu_copy_regs
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>
2022-04-26 08:16:41 -07:00
Richard Henderson
17a406eec5 target/nios2: Split PC out of env->regs[]
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>
2022-04-26 08:16:41 -07:00
Marc-André Lureau
8e3b0cbb72 Replace qemu_real_host_page variables with inlined functions
Replace the global variables with inlined helper functions. getpagesize() is very
likely annotated with a "const" function attribute (at least with glibc), and thus
optimization should apply even better.

This avoids the need for a constructor initialization too.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220323155743.1585078-12-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06 10:50:38 +02:00
Marc-André Lureau
ee3eb3a7ce Replace TARGET_WORDS_BIGENDIAN
Convert the TARGET_WORDS_BIGENDIAN macro, similarly to what was done
with HOST_BIG_ENDIAN. The new TARGET_BIG_ENDIAN macro is either 0 or 1,
and thus should always be defined to prevent misuse.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Suggested-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323155743.1585078-8-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06 10:50:37 +02:00
Fergus Henderson
879667433a linux-user: Fix missing space in error message
Signed-off-by: Fergus Henderson <fergus@google.com>
Signed-off-by: Patrick Venture <venture@google.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220310192148.1696486-1-venture@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-03-22 13:06:21 +01:00
Thomas Huth
74154d7e4a linux-user: Remove the deprecated ppc64abi32 target
It's likely broken, and nobody cared for picking it up again
during the deprecation phase, so let's remove this now.

Since this is the last entry in deprecated_targets_list, remove
the related code in the configure script, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20211215084958.185214-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220112112722.3641051-32-alex.bennee@linaro.org>
2022-02-09 13:29:38 +00:00
Alex Bennée
190674f371 linux-user: don't adjust base of found hole
The pgb_find_hole function goes to the trouble of taking account of
both mmap_min_addr and any offset we've applied to decide the starting
address of a potential hole. This is especially important for
emulating 32bit ARM in a 32bit build as we have applied the offset to
ensure there will be space to map the ARM_COMMPAGE bellow the main
guest map (using wrapped arithmetic).

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/690
Message-Id: <20220105135009.1584676-27-alex.bennee@linaro.org>
2022-01-18 16:44:16 +00:00
Alex Bennée
e7588237ce linux-user/elfload: add extra logging for hole finding
The various approaches to finding memory holes are quite complicated
to follow especially at a distance. Improve the logging so we can see
exactly what method found the space for the guest memory.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220105135009.1584676-26-alex.bennee@linaro.org>
2022-01-18 16:44:16 +00:00
Alex Bennée
11d3672788 linux-user: expand reserved brk space for 64bit guests
A recent change to fix commpage allocation issues on 32bit hosts
revealed another intermittent issue on s390x. The root cause was the
headroom we give for the brk space wasn't enough causing the guest to
attempt to map something on top of QEMUs own pages. We do not
currently do anything to protect from this (see #555).

By inspection the brk mmap moves around and top of the address range
has been measured as far as 19Mb away from the top of the binary. As
we chose a smallish number to keep 32bit on 32 bit feasible we only
increase the gap for 64 bit guests. This does mean that 64-on-32
static binaries are more likely to fail to find a hole in the address
space but that is hopefully a fairly rare situation.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220113165550.4184455-1-alex.bennee@linaro.org>
2022-01-18 16:44:05 +00:00
Peter Maydell
b37778b840 linux-user: Fix clang warning for nios2-linux-user code
The clang in Ubuntu 18.04 (10.0.0-4ubuntu1) produces a warning
on the code added in commit f5ef0e518d where we use a
shifted expression in a boolean context:

../../linux-user/elfload.c:2423:16: error: converting the result of '<<' to a boolean always evaluates to true [-Werror,-Wtautological-constant-compare]
    } else if (LO_COMMPAGE) {
               ^
../../linux-user/elfload.c:1102:22: note: expanded from macro 'LO_COMMPAGE'
#define LO_COMMPAGE  TARGET_PAGE_SIZE
                     ^
/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/include/exec/cpu-all.h:231:31: note: expanded from macro 'TARGET_PAGE_SIZE'
#define TARGET_PAGE_SIZE   (1 << TARGET_PAGE_BITS)
                              ^
1 error generated.

The warning is bogus because whether LO_COMMPAGE is zero or not
depends on compile-time ifdefs; shut the compiler up by adding
an explicit comparison to zero.

Fixes: f5ef0e518d ("linux-user/nios2: Map a real kuser page")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-id: 20220111082900.3341274-1-peter.maydell@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-01-12 09:22:01 +00:00
Richard Henderson
f5ef0e518d linux-user/nios2: Map a real kuser page
The first word of page1 is data, so the whole thing
can't be implemented with emulation of addresses.
Use init_guest_commpage for the allocation.

Hijack trap number 16 to implement cmpxchg.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211221025012.1057923-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-01-06 11:40:52 +01:00
Richard Henderson
66346faf32 linux-user/elfload: Rename ARM_COMMPAGE to HI_COMMPAGE
Arm will no longer be the only target requiring a commpage,
but it will continue to be the only target placing the page
at the high end of the address space.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211221025012.1057923-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-01-06 11:40:52 +01:00
Laurent Vivier
802ae45e94 linux-user: fix Coverity CID 1464101
target_mmap() can fail and return -1, but we don't check for that and
instead assume it's always valid.

Fixes: db2af69d6b ("linux-user: Add infrastructure for a signal trampoline page")
Cc: richard.henderson@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211121151711.331653-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-11-22 09:17:08 +01:00
Philippe Mathieu-Daudé
6f08c9c531 Revert "elf: Relax MIPS' elf_check_arch() to accept EM_NANOMIPS too"
Per the "P32 Porting Guide" (rev 1.2) [1], chapter 2:

  p32 ABI Overview
  ----------------

  The Application Binary Interface, or ABI, is the set of rules
  that all binaries must follow in order to run on a nanoMIPS
  system. This includes, for example, object file format,
  instruction set, data layout, subroutine calling convention,
  and system call numbers. The ABI is one part of the mechanism
  that maintains binary compatibility across all nanoMIPS platforms.

  p32 improves on o32 to provide an ABI that is efficient in both
  code density and performance. p32 is required for the nanoMIPS
  architecture.

So far QEMU only support the MIPS o32 / n32 / n64 ABIs. The p32 ABI
is not implemented, therefore we can not run any nanoMIPS binary.

Revert commit f72541f3a5 ("elf: Relax MIPS' elf_check_arch() to
accept EM_NANOMIPS too").

See also the "ELF ABI Supplement" [2].

[1] http://codescape.mips.com/components/toolchain/nanomips/2019.03-01/docs/MIPS_nanoMIPS_p32_ABI_Porting_Guide_01_02_DN00184.pdf
[2] http://codescape.mips.com/components/toolchain/nanomips/2019.03-01/docs/MIPS_nanoMIPS_ABI_supplement_01_03_DN00179.pdf

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211101114800.2692157-1-f4bug@amsat.org>
2021-11-02 14:35:22 +01:00
Richard Henderson
e91a7227cb target/riscv: Split misa.mxl and misa.ext
The hw representation of misa.mxl is at the high bits of the
misa csr.  Representing this in the same way inside QEMU
results in overly complex code trying to check that field.

Reviewed-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20211020031709.359469-4-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2021-10-22 07:47:51 +10:00
Matheus Ferst
10de052188 linux-user: Fix XER access in ppc version of elf_core_copy_regs
env->xer doesn't hold some bits of XER, like OV and CA. To write the
complete register in the core dump we should read XER value with
cpu_read_xer.

Reported-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Fixes: da91a00f19 ("target-ppc: Split out SO, OV, CA fields from XER")
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20211014223234.127012-4-matheus.ferst@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-10-21 11:42:47 +11:00
Richard Henderson
525c4670c5 linux-user: Remove default for TARGET_ARCH_HAS_SIGTRAMP_PAGE
All targets now define TARGET_ARCH_HAS_SIGTRAMP_PAGE.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210929130553.121567-26-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-10-01 12:03:48 +02:00
Richard Henderson
db2af69d6b linux-user: Add infrastructure for a signal trampoline page
Allocate a page to hold the signal trampoline(s).
Invoke a guest-specific hook to fill in the contents
of the page before marking it read-execute again.

Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210929130553.121567-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-10-01 12:03:47 +02:00
Peter Maydell
3b249d2661 linux-user: Split linux-user internals out of qemu.h
qemu.h is included in various non-linux-user files (which
mostly want the TaskState struct and the functions for
doing usermode access to guest addresses like lock_user(),
unlock_user(), get_user*(), etc).

Split out the parts that are only used in linux-user itself
into a new user-internals.h. This leaves qemu.h with basically
three things:
 * the definition of the TaskState struct
 * the user-access functions and macros
 * do_brk()
all of which are needed by code outside linux-user that
includes qemu.h.

The addition of all the extra #include lines was done with
  sed -i '/include.*qemu\.h/a #include "user-internals.h"' $(git grep -l 'include.*qemu\.h' linux-user)
(and then undoing the change to fpa11.h).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210908154405.15417-8-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-09-13 20:35:45 +02:00
Peter Maydell
5423e6d3a4 linux-user: Split mmap prototypes into user-mmap.h
Split out the mmap prototypes into a new header user-mmap.h
which we only include where required.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210908154405.15417-6-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-09-13 20:35:45 +02:00
Peter Maydell
3ad0a76928 linux-user: Split loader-related prototypes into loader.h
Split guest-binary loader prototypes out into a new header
loader.h which we include only where required.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210908154405.15417-5-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-09-13 20:35:44 +02:00
Ilya Leoshkevich
030912e01c linux-user/elfload: byteswap i386 registers when dumping core
Core dumps from emulating x86_64 on big-endian hosts contain incorrect
register values.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210803172013.148446-1-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-08-05 12:17:30 +02:00
Kito Cheng
cb46938c45 linux-user/elfload: Implement ELF_HWCAP for RISC-V
Set I, M, A, F, D and C bit for hwcap if misa is set.

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210706035015.122899-1-kito.cheng@sifive.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-07-07 21:14:47 +02:00
Peter Maydell
b22726abdf Linux-user pull request 20210621
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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-6.1-pull-request' into staging

Linux-user pull request 20210621

# gpg: Signature made Mon 21 Jun 2021 12:03:53 BST
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-6.1-pull-request:
  linux-user: Use public sigev_notify_thread_id member if available
  linux-user: Fix incorrect use of feature-test-macros
  linux-user: Check for ieee128 fpbits in PPC64 HWCAP2 feature list
  tests/tcg/linux-test: Check that sigaction can query SIGKILL/SIGSTOP
  linux-user: Let sigaction query SIGKILL/SIGSTOP
  linux-user: Implement pivot_root
  linux-user/trace-events: fix minor typo in format string
  linux-user: Disable static assert involving __SIGRTMAX if it is missing
  linux-user: Set CF_PARALLEL when mapping shared memory

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-22 16:07:53 +01:00
David Hildenbrand
da215c2394 linux-user: elf: s390x: Prepare for Vector enhancements facility
Let's check for S390_FEAT_VECTOR_ENH and set HWCAP_S390_VXRS_EXT
accordingly. Add all missing HWCAP defined in upstream Linux.

Cc: Laurent Vivier <laurent@vivier.eu>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210608092337.12221-25-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2021-06-21 08:48:21 +02:00
Khem Raj
8a589aeb27 linux-user: Check for ieee128 fpbits in PPC64 HWCAP2 feature list
glibc 2.34 is now checking for this in hwcaps at
runtime [1] and failing to run the binary if machine
does not support 128bit IEEE fp

Fixes
Fatal glibc error: CPU lacks float128 support (POWER 9 or later required)

[1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=d337345ce145e23c5f3a956f349d924fdf54ce2d;hp=eb24865637a271ab7dad13190330105eab0d478d

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Florian Weimer <fweimer@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210614191729.2981488-1-raj.khem@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-06-20 16:36:40 +02:00
Richard Henderson
6c47a9053c linux-user/aarch64: Enable hwcap bits for bfloat16
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525225817.400336-12-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-03 16:43:26 +01:00
Richard Henderson
cdc8d8b273 linux-user/aarch64: Enable hwcap bits for sve2 and related extensions
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525010358.152808-92-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-05-25 16:01:44 +01:00
Ilya Leoshkevich
4a1e8931ec linux-user/elfload: add s390x core dumping support
Provide the following definitions required by the common code:

* ELF_NREG: with the value of sizeof(s390_regs) / sizeof(long).
* target_elf_gregset_t: define it like all the other arches do.
* elf_core_copy_regs(): similar to kernel's s390_regs_get().
* USE_ELF_CORE_DUMP.
* ELF_EXEC_PAGESIZE.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20210413205608.22587-1-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-18 07:10:46 +02:00
Ilya Leoshkevich
5f779a3a26 linux-user/elfload: fix filling psinfo->pr_psargs
The current code dumps the memory between arg_start and arg_end,
which contains the argv pointers. This results in the

    Core was generated by `<garbage>`

message when opening the core file in GDB. This is because the code is
supposed to dump the actual arg strings. Fix by using arg_strings and
env_strings instead of arg_start and arg_end.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20210413205814.22821-1-iii@linux.ibm.com>
[lv: add missing braces]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-18 07:10:46 +02:00
Daniel P. Berrangé
68af19ad72 linux-user: use GDateTime for formatting timestamp for core file
The GDateTime APIs provided by GLib avoid portability pitfalls, such
as some platforms where 'struct timeval.tv_sec' field is still 'long'
instead of 'time_t'. When combined with automatic cleanup, GDateTime
often results in simpler code too.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210505103702.521457-7-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-18 07:09:58 +02:00
Richard Henderson
089a2256ee linux-user/sparc: Clean up init_thread
Share code between sparc32 and sparc64, removing a bit of pointless
difference wrt psr/tstate.  Use sizeof(abi_ulong) for allocating
initial register window.  Use TARGET_STACK_BIAS.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-15 21:43:23 +02:00
Richard Henderson
68948d1822 linux-user/aarch64: Enable hwcap for RND, BTI, and MTE
These three features are already enabled by TCG, but are missing
their hwcap bits.  Update HWCAP2 from linux v5.12.

Cc: qemu-stable@nongnu.org (for 6.0.1)
Buglink: https://bugs.launchpad.net/bugs/1926044
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210427214108.88503-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-05-10 13:03:03 +01:00
Vincent Fazio
0266e8e3b3 linux-user/elfload: fix address calculation in fallback scenario
Previously, guest_loaddr was not taken into account when returning an
address from pgb_find_hole when /proc/self/maps was unavailable which
caused an improper guest_base address to be calculated.

This could cause a SIGSEGV later in load_elf_image -> target_mmap for
ET_EXEC type images since the mmap MAP_FIXED flag is specified which
could clobber existing mappings at the address returnd by g2h().

  mmap(0xd87000, 16846912, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE|0x100000, -1, 0) = 0xd87000
  munmap(0xd87000, 16846912)              = 0
  write(2, "Locating guest address space @ 0"..., 40Locating guest address space @ 0xd87000) = 40
  mmap(0x1187000, 16850944, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x1187000
  --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x2188310} ---
  +++ killed by SIGSEGV +++

Now, pgd_find_hole accounts for guest_loaddr in this scenario.

Fixes: ad592e37df ("linux-user: provide fallback pgd_find_hole for bare chroots")
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210131061948.15990-1-vfazio@xes-inc.com>
[lv: updated it to check if ret == -1]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-03-13 10:45:11 +01:00