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build-sys: meson: Fixes for some ARM compiler checks

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This commit is contained in:
Arun Raghavan 2019-08-22 17:58:20 +05:30
parent d830c66613
commit f515443fa0
1 changed files with 11 additions and 8 deletions
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19
meson.build
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@ -430,19 +430,21 @@ elif host_machine.cpu_family() == 'arm'
if host_machine.system() == 'linux' and get_option('atomic-arm-linux-helpers') if host_machine.system() == 'linux' and get_option('atomic-arm-linux-helpers')
cdata.set('ATOMIC_ARM_LINUX_HELPERS', 1) cdata.set('ATOMIC_ARM_LINUX_HELPERS', 1)
else else
armatomictest = '''void func() { armatomictest = '''int func() {
volatile int a=0; volatile int a=0;
int o=0, n=1, r; int o=0, n=1, r;
asm volatile ("ldrex %0, [%1]\n" asm volatile (
"subs %0, %0, %2\n" "ldrex %0, [%1]\n"
"strexeq %0, %3, [%1]\n" "subs %0, %0, %2\n"
: "=&r" (r) "strexeq %0, %3, [%1]\n"
: "r" (&a), "Ir" (o), "r" (n) : "=&r" (r)
: "r" (&a), "Ir" (o), "r" (n)
: "cc"); : "cc");
return (a==1 ? 0 : -1); return (a==1 ? 0 : -1);
}
''' '''
if cc.compiles(aratomictest) if cc.compiles(armatomictest)
cdata.set('ATOMIC_ARM_INLINE_ASM', 1) cdata.set('ATOMIC_ARM_INLINE_ASM', 1)
else else
need_libatomic_ops = true need_libatomic_ops = true
@ -470,7 +472,7 @@ endif
# ARM checks # ARM checks
# ARMV6 instructions we need # ARMV6 instructions we need
if host_machine.cpu_family() == 'arm' if host_machine.cpu_family() == 'arm'
armv6test = '''void func() { armv6test = '''int func() {
volatile int a = -60000, b = 0xaaaabbbb, c = 0xccccdddd; volatile int a = -60000, b = 0xaaaabbbb, c = 0xccccdddd;
asm volatile ("ldr r0, %2 \n" asm volatile ("ldr r0, %2 \n"
"ldr r2, %3 \n" "ldr r2, %3 \n"
@ -483,6 +485,7 @@ if host_machine.cpu_family() == 'arm'
: "m" (a), "m" (b), "m" (c) : "m" (a), "m" (b), "m" (c)
: "r0", "r1", "r2", "r3", "cc"); : "r0", "r1", "r2", "r3", "cc");
return (a == -128 && b == 0xaabbdddd) ? 0 : -1; return (a == -128 && b == 0xaabbdddd) ? 0 : -1;
}
''' '''
if cc.compiles(armv6test) if cc.compiles(armv6test)