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| author | John David Anglin <dave.anglin@bell.net> | 2014-08-10 09:39:25 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2015-08-05 06:44:54 -0400 |
| commit | 6fef29c020d055f994cf7c4602b01a553b7a9860 (patch) | |
| tree | 0b0dc645591c4a537776ba646cde11457825cab4 | |
| parent | 98b9c13e1abcf8d941d7934eed1a33527d6fd39b (diff) | |
| download | glibc-6fef29c020d055f994cf7c4602b01a553b7a9860.tar.gz glibc-6fef29c020d055f994cf7c4602b01a553b7a9860.tar.xz glibc-6fef29c020d055f994cf7c4602b01a553b7a9860.zip | |
hppa: fix build problems with atomic code
Specifically: ../sysdeps/unix/sysv/linux/hppa/bits/atomic.h:68:6: error: can't find a register in class 'R1_REGS' while reloading 'asm'
| -rw-r--r-- | sysdeps/unix/sysv/linux/hppa/bits/atomic.h | 60 |
1 files changed, 32 insertions, 28 deletions
diff --git a/sysdeps/unix/sysv/linux/hppa/bits/atomic.h b/sysdeps/unix/sysv/linux/hppa/bits/atomic.h index abde83e2f9..b2294ba4b8 100644 --- a/sysdeps/unix/sysv/linux/hppa/bits/atomic.h +++ b/sysdeps/unix/sysv/linux/hppa/bits/atomic.h @@ -64,35 +64,39 @@ typedef uintmax_t uatomic_max_t; #if __ASSUME_LWS_CAS /* The only basic operation needed is compare and exchange. */ +static int __attribute__((noinline, unused)) +__atomic_compare_and_exchange_val_acq (int mem, int newval, int oldval) +{ + volatile int lws_errno; + volatile int lws_ret; + asm volatile( + "0: \n\t" + "copy %2, %%r26 \n\t" + "copy %3, %%r25 \n\t" + "copy %4, %%r24 \n\t" + "ble " _LWS "(%%sr2, %%r0) \n\t" + "ldi " _LWS_CAS ", %%r20 \n\t" + "ldi " _ASM_EAGAIN ", %%r24 \n\t" + "cmpb,=,n %%r24, %%r21, 0b \n\t" + "nop \n\t" + "ldi " _ASM_EDEADLOCK ", %%r25 \n\t" + "cmpb,=,n %%r25, %%r21, 0b \n\t" + "nop \n\t" + "stw %%r28, %0 \n\t" + "stw %%r21, %1 \n\t" + : "=m" (lws_ret), "=m" (lws_errno) + : "r" (mem), "r" (oldval), "r" (newval) + : _LWS_CLOBBER + ); + + if (lws_errno == -EFAULT || lws_errno == -ENOSYS) + ABORT_INSTRUCTION; + + return lws_ret; +} # define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ - ({ \ - volatile int lws_errno; \ - __typeof__ (*mem) lws_ret; \ - asm volatile( \ - "0: \n\t" \ - "copy %2, %%r26 \n\t" \ - "copy %3, %%r25 \n\t" \ - "copy %4, %%r24 \n\t" \ - "ble " _LWS "(%%sr2, %%r0) \n\t" \ - "ldi " _LWS_CAS ", %%r20 \n\t" \ - "ldi " _ASM_EAGAIN ", %%r24 \n\t" \ - "cmpb,=,n %%r24, %%r21, 0b \n\t" \ - "nop \n\t" \ - "ldi " _ASM_EDEADLOCK ", %%r25 \n\t" \ - "cmpb,=,n %%r25, %%r21, 0b \n\t" \ - "nop \n\t" \ - "stw %%r28, %0 \n\t" \ - "stw %%r21, %1 \n\t" \ - : "=m" (lws_ret), "=m" (lws_errno) \ - : "r" (mem), "r" (oldval), "r" (newval) \ - : _LWS_CLOBBER \ - ); \ - \ - if(lws_errno == -EFAULT || lws_errno == -ENOSYS) \ - ABORT_INSTRUCTION; \ - \ - lws_ret; \ - }) + ((__typeof__(oldval)) \ + __atomic_compare_and_exchange_val_acq ((int)mem, (int)newval, (int)oldval)) # define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \ ({ \ |