| cerror.S (178580) | cerror.S (209231) |
|---|---|
| 1/* $NetBSD: cerror.S,v 1.13 2003/08/07 16:42:17 agc Exp $ */ | 1/* $NetBSD: cerror.S,v 1.14 2009/12/14 01:07:42 matt Exp $ */ |
| 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * --- 18 unchanged lines hidden (view full) --- 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> | 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * --- 18 unchanged lines hidden (view full) --- 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> |
| 36__FBSDID("$FreeBSD: head/lib/libc/mips/sys/cerror.S 178580 2008-04-26 12:08:02Z imp $"); | 36__FBSDID("$FreeBSD: head/lib/libc/mips/sys/cerror.S 209231 2010-06-16 12:55:14Z jchandra $"); |
| 37#include "SYS.h" 38 39#if defined(LIBC_SCCS) && !defined(lint) | 37#include "SYS.h" 38 39#if defined(LIBC_SCCS) && !defined(lint) |
| 40 ASMSTR("from: @(#)cerror.s 8.1 (Berkeley) 6/16/93") 41 ASMSTR("$NetBSD: cerror.S,v 1.13 2003/08/07 16:42:17 agc Exp $") | 40#if 0 41 RCSID("from: @(#)cerror.s 8.1 (Berkeley) 6/16/93") 42#else 43 RCSID("$NetBSD: cerror.S,v 1.14 2009/12/14 01:07:42 matt Exp $") 44#endif |
| 42#endif /* LIBC_SCCS and not lint */ 43 | 45#endif /* LIBC_SCCS and not lint */ 46 |
| 47 .globl _C_LABEL(__error) 48NESTED_NOPROFILE(__cerror, CALLFRAME_SIZ, ra) 49 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ) 50 SETUP_GP 51 PTR_SUBU sp, sp, CALLFRAME_SIZ 52 SETUP_GP64(CALLFRAME_GP, __cerror) 53 SAVE_GP(CALLFRAME_GP) |
|
| 44 | 54 |
| 45 /* 46 * The __error() function is thread aware. For non-threaded 47 * programs and the initial threaded in threaded programs, 48 * it returns a pointer to the global errno variable. 49 */ 50 .globl _C_LABEL(__error) 51 .type _C_LABEL(__error),%function | 55 PTR_S ra, CALLFRAME_RA(sp) 56 REG_S v0, CALLFRAME_S0(sp) # save errno value |
| 52 | 57 |
| 53LEAF(__cerror) 54 .frame sp, CALLFRAME_SIZ, ra 55 PIC_PROLOGUE(__cerror, t9) 56 subu sp, sp, CALLFRAME_SIZ 57 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ) 58 sw ra, CALLFRAME_RA(sp) 59 sw v0, 12(sp) # save errno value | 58 PTR_LA t9, _C_LABEL(__error) # locate address of errno 59 jalr t9 |
| 60 | 60 |
| 61 la t9, _C_LABEL(__error) # locate address of errno 62 jalr t9 | 61 REG_L t0, CALLFRAME_S0(sp) 62 PTR_L ra, CALLFRAME_RA(sp) 63 INT_S t0, 0(v0) # update errno value |
| 63 | 64 |
| 64 lw t0, 12(sp) 65 lw ra, CALLFRAME_RA(sp) 66 sw t0, 0(v0) # update errno value 67 addiu sp, sp, CALLFRAME_SIZ 68 li v0, -1 69 li v1, -1 70 j ra | 65 RESTORE_GP64 66 PTR_ADDU sp, sp, CALLFRAME_SIZ 67 68 li v0, -1 69 li v1, -1 70 71 j ra |
| 71END(__cerror) | 72END(__cerror) |