From 5d94c2ffa813d07678c59dea516be5153f85cb2f Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Wed, 16 Aug 2023 10:54:57 -0700 Subject: [PATCH] linux-user: Show vdso address in /proc/pid/maps Tested-by: Helge Deller Reviewed-by: Ilya Leoshkevich Signed-off-by: Richard Henderson --- linux-user/elfload.c | 1 + linux-user/qemu.h | 1 + linux-user/syscall.c | 2 ++ 3 files changed, 4 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index a1583883fa..46832358b0 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -3919,6 +3919,7 @@ int load_elf_binary(struct linux_binprm *bprm, struct image_info *info) const VdsoImageInfo *vdso = vdso_image_info(); if (vdso) { load_elf_vdso(&vdso_info, vdso); + info->vdso = vdso_info.load_bias; } else if (TARGET_ARCH_HAS_SIGTRAMP_PAGE) { abi_long tramp_page = target_mmap(0, TARGET_PAGE_SIZE, PROT_READ | PROT_WRITE, diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 12f638336a..4de9ec783f 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -32,6 +32,7 @@ struct image_info { abi_ulong brk; abi_ulong start_stack; abi_ulong stack_limit; + abi_ulong vdso; abi_ulong entry; abi_ulong code_offset; abi_ulong data_offset; diff --git a/linux-user/syscall.c b/linux-user/syscall.c index d49cd314a2..65ac3ac796 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -7992,6 +7992,8 @@ static void open_self_maps_4(const struct open_self_maps_data *d, path = "[stack]"; } else if (start == info->brk) { path = "[heap]"; + } else if (start == info->vdso) { + path = "[vdso]"; } /* Except null device (MAP_ANON), adjust offset for this fragment. */