system/qemu
system/qemu
1
0
Fork 0
mirror of https://gitlab.com/qemu-project/qemu synced 2024-07-23 19:34:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

meson: assume x86-64-v2 baseline ISA

Browse source 
x86-64-v2 processors were released in 2008, assume that we have one.
Unfortunately there is no GCC flag to enable all the features
without disabling what came after; so enable them one by one.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-05-31 10:37:06 +02:00
parent 72baef13b9
commit 294ac64e45
1 changed files with 7 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
meson.build
View file

@ -336,9 +336,13 @@ if host_arch == 'i386' and not cc.links('''
qemu_common_flags = ['-march=i486'] + qemu_common_flags qemu_common_flags = ['-march=i486'] + qemu_common_flags
endif endif
# ??? Only extremely old AMD cpus do not have cmpxchg16b. # Assume x86-64-v2 (minus CMPXCHG16B for 32-bit code)
# If we truly care, we should simply detect this case at if host_arch == 'i386'
# runtime and generate the fallback to serial emulation. qemu_common_flags = ['-mfpmath=sse'] + qemu_common_flags
endif
if host_arch in ['i386', 'x86_64']
qemu_common_flags = ['-mpopcnt', '-msse4.2'] + qemu_common_flags
endif
if host_arch == 'x86_64' if host_arch == 'x86_64'
qemu_common_flags = ['-mcx16'] + qemu_common_flags qemu_common_flags = ['-mcx16'] + qemu_common_flags
endif endif