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Update.
2000-12-05 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/mmap64.S: Use mmap if mmap2 isn't
available.
This commit is contained in:
Andreas Jaeger
parent
cf3141a59d
commit
e22669a312
@ -1,3 +1,8 @@
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2000-12-05 Martin Schwidefsky <schwidefsky@de.ibm.com>
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* sysdeps/unix/sysv/linux/s390/mmap64.S: Use mmap if mmap2 isn't
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available.
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2000-12-05 Andreas Jaeger <aj@suse.de>
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* nss/test-netdb.c: Mark local functions as static to avoid
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@ -9,93 +9,93 @@
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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Boston, MA 02111-1307, USA. */
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#include <sysdep.h>
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#define EINVAL 22
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#define ENOSYS 38
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#define EINVAL 22
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#define ENOSYS 38
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.text
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ENTRY(__mmap64)
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/* Save registers and setup stack frame. */
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stm %r6,%r15,24(%r15)
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lr %r1,%r15
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ahi %r15,-120 /* Buy stack space. */
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st %r1,0(%r15) /* Store back chain. */
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stm %r6,%r15,24(%r15)
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lr %r1,%r15
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ahi %r15,-120 /* Buy stack space. */
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st %r1,0(%r15) /* Store back chain. */
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/* Store parameters on stack, because mmap2 and old_mmap
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* take only one parameter: a pointer to the parameter area. */
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st %r6,0x70(%r15) /* Store 'fd'. */
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st %r5,0x6C(%r15) /* Store 'flags'. */
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st %r4,0x68(%r15) /* Store 'prot'. */
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st %r3,0x64(%r15) /* Store 'length'. */
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st %r2,0x60(%r15) /* Store 'start'. */
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st %r6,0x70(%r15) /* Store 'fd'. */
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st %r5,0x6C(%r15) /* Store 'flags'. */
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st %r4,0x68(%r15) /* Store 'prot'. */
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st %r3,0x64(%r15) /* Store 'length'. */
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st %r2,0x60(%r15) /* Store 'start'. */
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#ifdef __NR_mmap2
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lm %r0,%r1,216(%r15) /* Load 64 bit offset. */
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tml %r1,0x0fff /* Offset page aligned ? */
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jnz 2f /* No -> EINVAL. */
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srdl %r0,12 /* mmap2 takes the offset in pages. */
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ltr %r0,%r0 /* Offset > 2^44 ? */
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jnz 2f
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st %r1,0x74(%r15) /* Store page offset. */
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lm %r0,%r1,216(%r15) /* Load 64 bit offset. */
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tml %r1,0x0fff /* Offset page aligned ? */
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jnz 2f /* No -> EINVAL. */
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srdl %r0,12 /* mmap2 takes the offset in pages. */
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ltr %r0,%r0 /* Offset > 2^44 ? */
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jnz 2f
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st %r1,0x74(%r15) /* Store page offset. */
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la %r2,0x60(%r15) /* Load address of parameter list. */
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svc SYS_ify(mmap2) /* Do the system call trap. */
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la %r2,0x60(%r15) /* Load address of parameter list. */
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svc SYS_ify(mmap2) /* Do the system call trap. */
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#ifndef __ASSUME_MMAP2_SYSCALL
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chi %r0,-ENOSYS
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chi %r0,-ENOSYS
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je 1f
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#endif
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l %r15,0(%r15) /* Load back chain. */
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lm %r6,%r15,24(%r15) /* Load registers. */
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l %r15,0(%r15) /* Load back chain. */
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lm %r6,%r15,24(%r15) /* Load registers. */
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/* Check gpr 2 for error. */
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lhi %r0,-4096
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clr %r2,%r0
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jnl SYSCALL_ERROR_LABEL
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lhi %r0,-4096
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clr %r2,%r0
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jnl SYSCALL_ERROR_LABEL
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/* Successful; return the syscall's value. */
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br %r14
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br %r14
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#endif
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#if !defined __ASSUME_MMAP2_SYSCALL || !defined __NR_mmap2
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1: lm %r0,%r1,216(%r15) /* Load 64 bit offset. */
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st %r1,0x74(%r15) /* Store lower word of offset. */
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ltr %r0,%r0 /* Offset > 2^32 ? */
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jnz 2f
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alr %r1,%r3 /* Add length to offset. */
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brc 3,2f /* Carry -> EINVAL. */
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1: lm %r0,%r1,216(%r15) /* Load 64 bit offset. */
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st %r1,0x74(%r15) /* Store lower word of offset. */
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ltr %r0,%r0 /* Offset > 2^32 ? */
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jnz 2f
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alr %r1,%r3 /* Add length to offset. */
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brc 3,2f /* Carry -> EINVAL. */
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la %r2,0x60(%r15) /* Load address of parameter list. */
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svc SYS_ify(mmap2) /* Do the system call trap. */
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la %r2,0x60(%r15) /* Load address of parameter list. */
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svc SYS_ify(mmap) /* Do the system call trap. */
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l %r15,0(%r15) /* Load back chain. */
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lm %r6,%r15,24(%r15) /* Load registers. */
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l %r15,0(%r15) /* Load back chain. */
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lm %r6,%r15,24(%r15) /* Load registers. */
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/* Check gpr 2 for error. */
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lhi %r0,-4096
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clr %r2,%r0
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jnl SYSCALL_ERROR_LABEL
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lhi %r0,-4096
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clr %r2,%r0
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jnl SYSCALL_ERROR_LABEL
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/* Successful; return the syscall's value. */
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br %r14
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br %r14
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#endif
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2: lhi %r2,-EINVAL
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l %r15,0(%r15) /* Load back chain. */
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lm %r6,%r15,24(%r15) /* Load registers. */
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j SYSCALL_ERROR_LABEL
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2: lhi %r2,-EINVAL
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l %r15,0(%r15) /* Load back chain. */
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lm %r6,%r15,24(%r15) /* Load registers. */
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j SYSCALL_ERROR_LABEL
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PSEUDO_END (__mmap64)
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weak_alias (__mmap64, mmap64)
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