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2021-09-10bsd-user: Add '-0 argv0' option to bsd-user/main.cColin Percival1-0/+6
Previously it was impossible to emulate a program with a file name different from its argv[0]. With this change, you can run qemu -0 fakename realname args which runs the program "realname" with an argv of "fakename args". Signed-off-by: Colin Percival <cperciva@tarsnap.com> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-10bsd-user: Implement interlock for atomic operationsWarner Losh1-0/+24
Implement the internlock in fork_start() and fork_end() to properly cope with atomic operations and to safely keep state for parent and child processes. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-10bsd-user: move gemu_log to later in the fileWarner Losh1-8/+9
Signed-off-by: Warner Losh <imp@bsdimp.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-09-10bsd-user: Refactor load_elf_sections and is_target_elf_binaryWarner Losh1-186/+158
Factor out load_elf_sections and is_target_elf_binary out of load_elf_interp. Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com> Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-09-10bsd-user: elfload.c style catch up patchWarner Losh1-104/+104
Various style fixes to elfload.c that were too painful to make earlier in this series. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-10bsd-user: add stubbed out core dump supportWarner Losh3-2/+36
Add a stubbed-out version of the bsd-user fork's core dump support. This allows elfload.c to be almost the same between what's upstream and what's in qemu-project upstream w/o the burden of reviewing the core dump support. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <i