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* linux-user: Rename elf_check_archRichard Henderson2025-08-301-1/+1
| | | | | | | | Rename to elf_check_machine to match ELF_MACHINE. Remove the unnecessary definition for loongarch64. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Standardize on ELF_MACHINE not ELF_ARCHRichard Henderson2025-08-301-1/+1
| | | | | | | | | | | | | | | | | PowerPC was the one outlier that defined both ELF_ARCH and ELF_MACHINE; ELF_ARCH was defined incorrectly, necessitating the definition of elf_check_arch. However, the elf file header field in question is called e_machine, so ELF_MACHINE is in fact the better name. Mechanically change most target/target_elf.h files, then adjust ppc/target_elf.h manually. Do not provide a default for ELF_MACHINE. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move elf parameters to {i386,x86_64}/target_elf.hRichard Henderson2025-08-301-0/+22
| | | | | Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/i386: Expand target_elf_gregset_tRichard Henderson2025-08-301-9/+5
| | | | | | | | | | | The comment re ELF_NREG is incorrect or out-of-date. Make use of the fact that target_elf_gregset_t is a proper structure by using target_user_regs_struct. Drop target_elf_greg_t and tswapreg. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move elf_core_copy_regs to {i386,x86_64}/elfload.cRichard Henderson2025-08-301-0/+15
| | | | | | | | | Move elf_core_copy_regs to elfload.c. Move HAVE_ELF_CORE_DUMP, ELF_NREGS, target_elf_gregset_t to target_elf.h. For now, duplicate the definitions of target_elf_greg_t and tswapreg. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_platform to {i386,x86_64}/elfload.cRichard Henderson2025-08-281-0/+1
| | | | | | | | | Move get_elf_platform to i386/elfload.c; pass in CPUState. Create a simple get_elf_platform for x86_64. Introduce HAVE_ELF_PLATFORM. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_hwcap to {i386,x86_64}/elfload.cRichard Henderson2025-08-281-0/+2
| | | | | | | | | Change the return type to abi_ulong, and pass in the cpu. Duplicate the one line function between i386 and x86_64, as most other additions to elfload.c won't be common. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_cpu_model to target/elfload.cRichard Henderson2025-08-281-4/+1
| | | | | | | | | | Rename from cpu_get_model to emphasize that this is an elf-specific function. Declare the function once in loader.h. This frees up target_elf.h for other uses. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: use 'max' instead of 'qemu32' / 'qemu64' by defaultDaniel P. Berrangé2022-09-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'qemu64' CPU model implements the least featureful x86_64 CPU that's possible. Historically this hasn't been an issue since it was rare for OS distros to build with a higher mandatory CPU baseline. With RHEL-9, however, the entire distro is built for the x86_64-v2 ABI baseline: https://developers.redhat.com/blog/2021/01/05/building-red-hat-enterprise-linux-9-for-the-x86-64-v2-microarchitecture-level It is likely that other distros may take similar steps in the not too distant future. For example, it has been suggested for Fedora on a number of occasions. This new baseline is not compatible with the qemu64 CPU model though. While it is possible to pass a '-cpu xxx' flag to qemu-x86_64, the usage of QEMU doesn't always allow for this. For example, the args are typically controlled via binfmt rules that the user has no ability to change. This impacts users who are trying to use podman on aarch64 platforms, to run containers with x86_64 content. There's no arg to podman that can be used to change the qemu-x86_64 args, and a non-root user of podman can not change binfmt rules without elevating privileges: https://github.com/containers/podman/issues/15456#issuecomment-1228210973 Changing to the 'max' CPU model gives 'qemu-x86_64' maximum compatibility with binaries it is likely to encounter in the wild, and not likely to have a significant downside for existing usage. Most other architectures already use an 'any' CPU model, which is often mapped to 'max' (or similar) already, rather than the oldest possible CPU model. For the sake of consistency the 'i386' architecture is also changed from using 'qemu32' to 'max'. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20220923110413.70593-1-berrange@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Move CPU type name selection to a functionLaurent Vivier2018-02-251-0/+14
Instead of a sequence of "#if ... #endif" move the selection to a function in linux-user/*/target_elf.h We can't add them in linux-user/*/target_cpu.h because we will need to include "elf.h" to use ELF flags with eflags, and including "elf.h" in "target_cpu.h" introduces some conflicts in elfload.c Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180220173307.25125-2-laurent@vivier.eu>