diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/cpuinfo-aarch64.c | 7 | ||||
| -rw-r--r-- | util/oslib-posix.c | 15 |
2 files changed, 10 insertions, 12 deletions
diff --git a/util/cpuinfo-aarch64.c b/util/cpuinfo-aarch64.c index e0e1fe6..4c8a005 100644 --- a/util/cpuinfo-aarch64.c +++ b/util/cpuinfo-aarch64.c @@ -13,6 +13,9 @@ # include <asm/hwcap.h> # include "elf.h" # endif +# ifndef HWCAP2_BTI +# define HWCAP2_BTI 0 /* added in glibc 2.32 */ +# endif #endif #ifdef CONFIG_DARWIN # include <sys/sysctl.h> @@ -58,12 +61,16 @@ unsigned __attribute__((constructor)) cpuinfo_init(void) info |= (hwcap & HWCAP_USCAT ? CPUINFO_LSE2 : 0); info |= (hwcap & HWCAP_AES ? CPUINFO_AES : 0); info |= (hwcap & HWCAP_PMULL ? CPUINFO_PMULL : 0); + + unsigned long hwcap2 = qemu_getauxval(AT_HWCAP2); + info |= (hwcap2 & HWCAP2_BTI ? CPUINFO_BTI : 0); #endif #ifdef CONFIG_DARWIN info |= sysctl_for_bool("hw.optional.arm.FEAT_LSE") * CPUINFO_LSE; info |= sysctl_for_bool("hw.optional.arm.FEAT_LSE2") * CPUINFO_LSE2; info |= sysctl_for_bool("hw.optional.arm.FEAT_AES") * CPUINFO_AES; info |= sysctl_for_bool("hw.optional.arm.FEAT_PMULL") * CPUINFO_PMULL; + info |= sysctl_for_bool("hw.optional.arm.FEAT_BTI") * CPUINFO_BTI; #endif cpuinfo = info; diff --git a/util/oslib-posix.c b/util/oslib-posix.c index 4d583da..e86fd64 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -585,7 +585,7 @@ char *qemu_get_pid_name(pid_t pid) void *qemu_alloc_stack(size_t *sz) { - void *ptr, *guardpage; + void *ptr; int flags; #ifdef CONFIG_DEBUG_STACK_USAGE void *ptr2; @@ -618,17 +618,8 @@ void *qemu_alloc_stack(size_t *sz) abort(); } -#if defined(HOST_IA64) - /* separate register stack */ - guardpage = ptr + (((*sz - pagesz) / 2) & ~pagesz); -#elif defined(HOST_HPPA) - /* stack grows up */ - guardpage = ptr + *sz - pagesz; -#else - /* stack grows down */ - guardpage = ptr; -#endif - if (mprotect(guardpage, pagesz, PROT_NONE) != 0) { + /* Stack grows down -- guard page at the bottom. */ + if (mprotect(ptr, pagesz, PROT_NONE) != 0) { perror("failed to set up stack guard page"); abort(); } |