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build-sys: meson: Add ARMv6 instruction check

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This commit is contained in:
Arun Raghavan 2019-08-15 13:08:14 +05:30
parent 1e996445f7
commit c90fa7f857
1 changed files with 24 additions and 0 deletions
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24
meson.build
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@ -439,6 +439,30 @@ else
libatomic_ops_dep = dependency('', required: false) libatomic_ops_dep = dependency('', required: false)
endif endif
# ARM checks
# ARMV6 instructions we need
if host_machine.cpu_family() == 'arm'
armv6test = '''void func() {
volatile int a = -60000, b = 0xaaaabbbb, c = 0xccccdddd;
asm volatile ("ldr r0, %2 \n"
"ldr r2, %3 \n"
"ldr r3, %4 \n"
"ssat r1, #8, r0 \n"
"str r1, %0 \n"
"pkhbt r1, r3, r2, LSL #8 \n"
"str r1, %1 \n"
: "=m" (a), "=m" (b)
: "m" (a), "m" (b), "m" (c)
: "r0", "r1", "r2", "r3", "cc");
return (a == -128 && b == 0xaabbdddd) ? 0 : -1;
'''
if cc.compiles(armv6test)
cdata.set('HAVE_ARMV6', 1)
endif
endif
# NEON checks are automatically done by the unstable-simd module
# FIXME: make sure it's >= 2.2 # FIXME: make sure it's >= 2.2
ltdl_dep = cc.find_library('ltdl', required : true) ltdl_dep = cc.find_library('ltdl', required : true)
# FIXME: can meson support libtool -dlopen/-dlpreopen things? # FIXME: can meson support libtool -dlopen/-dlpreopen things?