Author: imp Date: Wed May 1 06:22:50 2013 New Revision: 250136 URL: http://svnweb.freebsd.org/changeset/base/250136
Log: Import NetBSD's version, which is perfectly fine. Submitted by: jmallet@ Modified: head/sys/mips/include/regdef.h Modified: head/sys/mips/include/regdef.h ============================================================================== --- head/sys/mips/include/regdef.h Wed May 1 05:48:32 2013 (r250135) +++ head/sys/mips/include/regdef.h Wed May 1 06:22:50 2013 (r250136) @@ -1,6 +1,8 @@ +/* $NetBSD: regdef.h,v 1.12 2005/12/11 12:18:09 christos Exp $ */ + /* * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. + * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell. This file is derived from the MIPS RISC @@ -14,7 +16,7 @@ * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. - * 4. Neither the name of the University nor the names of its contributors + * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * @@ -29,44 +31,80 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * @(#)regdef.h 8.1 (Berkeley) 06/10/93 + * + * @(#)regdef.h 8.1 (Berkeley) 6/10/93 * $FreeBSD$ */ -#ifndef _MIPS_INCLUDE_REGDEF_H_ -#define _MIPS_INCLUDE_REGDEF_H_ +#ifndef _MIPS_REGDEF_H +#define _MIPS_REGDEF_H + +#include <machine/cdefs.h> /* for API selection */ + +#if defined(__ASSEMBLER__) +#define zero $0 /* always zero */ +#define AT $at /* assembler temporary */ +#define v0 $2 /* return value */ +#define v1 $3 +#define a0 $4 /* argument registers */ +#define a1 $5 +#define a2 $6 +#define a3 $7 +#if defined(__mips_n32) || defined(__mips_n64) +#define a4 $8 +#define a5 $9 +#define a6 $10 +#define a7 $11 +#define t0 $12 /* temp registers (not saved across subroutine calls) */ +#define t1 $13 +#define t2 $14 +#define t3 $15 +#else +#define t0 $8 /* temp registers (not saved across subroutine calls) */ +#define t1 $9 +#define t2 $10 +#define t3 $11 +#define t4 $12 +#define t5 $13 +#define t6 $14 +#define t7 $15 +#endif /* __mips_n32 || __mips_n64 */ +#define s0 $16 /* saved across subroutine calls (callee saved) */ +#define s1 $17 +#define s2 $18 +#define s3 $19 +#define s4 $20 +#define s5 $21 +#define s6 $22 +#define s7 $23 +#define t8 $24 /* two more temporary registers */ +#define t9 $25 +#define k0 $26 /* kernel temporary */ +#define k1 $27 +#define gp $28 /* global pointer */ +#define sp $29 /* stack pointer */ +#define s8 $30 /* one more callee saved */ +#define ra $31 /* return address */ -#define zero $0 /* always zero */ -#define AT $at /* assembler temp */ -#define v0 $2 /* return value */ -#define v1 $3 -#define a0 $4 /* argument registers */ -#define a1 $5 -#define a2 $6 -#define a3 $7 -#define t0 $8 /* temp registers (not saved across subroutine calls) */ -#define t1 $9 -#define t2 $10 -#define t3 $11 -#define t4 $12 -#define t5 $13 -#define t6 $14 -#define t7 $15 -#define s0 $16 /* saved across subroutine calls (callee saved) */ -#define s1 $17 -#define s2 $18 -#define s3 $19 -#define s4 $20 -#define s5 $21 -#define s6 $22 -#define s7 $23 -#define t8 $24 /* two more temp registers */ -#define t9 $25 -#define k0 $26 /* kernel temporary */ -#define k1 $27 -#define gp $28 /* global pointer */ -#define sp $29 /* stack pointer */ -#define s8 $30 /* one more callee saved */ -#define ra $31 /* return address */ +/* + * These are temp registers whose names can be used in either the old + * or new ABI, although they map to different physical registers. In + * the old ABI, they map to t4-t7, and in the new ABI, they map to a4-a7. + * + * Because they overlap with the last 4 arg regs in the new ABI, ta0-ta3 + * should be used only when we need more than t0-t3. + */ +#if defined(__mips_n32) || defined(__mips_n64) +#define ta0 $8 +#define ta1 $9 +#define ta2 $10 +#define ta3 $11 +#else +#define ta0 $12 +#define ta1 $13 +#define ta2 $14 +#define ta3 $15 +#endif /* __mips_n32 || __mips_n64 */ -#endif /* _MIPS_INCLUDE_REGDEF_H_ */ +#endif /* __ASSEMBLER__ */ +#endif /* _MIPS_REGDEF_H */ _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
