Update.
* sysdeps/unix/sysv/linux/mips/clone.S: Fix function. * sysdeps/unix/sysv/linux/mips/pipe.S: New file.
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@ -1,6 +1,6 @@
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2000-04-13 Andreas Jaeger <aj@suse.de>
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* sysdeps/unix/sysv/linux/mips/pipe.S: New file.
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* sysdeps/unix/sysv/linux/mips/clone.S: Fix function.
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* sysdeps/unix/mips/pipe.S: Reorder instructions since .reorder is
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default.
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@ -12,6 +12,8 @@
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* sysdeps/mips/bsd-setjmp.S: Use __PIC__.
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* sysdeps/mips/bsd-_setjmp.S: Likewise.
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* sysdeps/mips/setjmp.S: Likewise.
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* sysdeps/unix/sysv/linux/mips/pipe.S: New file.
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2000-04-13 Ulrich Drepper <drepper@redhat.com>
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@ -26,25 +26,18 @@
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#define _ERRNO_H 1
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#include <bits/errno.h>
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/* int clone(int (*fn)(), void *child_stack, int flags, void *arg) */
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#define FRAMESZ 8*SZREG
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#if _MIPS_SIM == _MIPS_SIM_ABI32
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#define MAX_REG_ARGS 4
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#else
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#define MAX_REG_ARGS 6
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#endif
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/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg) */
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.text
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NESTED(__clone,FRAMESZ,sp)
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NESTED(__clone,4*SZREG,sp)
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#ifdef __PIC__
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.set noreorder
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.cpload $25
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.set reorder
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PTR_SUBIU sp,FRAMESZ
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.cprestore SZREG*4
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subu sp,32
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.cprestore 16
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#else
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PTR_SUBIU sp,FRAMESZ
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subu sp,32
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#endif
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#ifdef PROF
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.set noat
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@ -53,17 +46,15 @@ NESTED(__clone,FRAMESZ,sp)
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.set at
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#endif
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REG_S s0,FRAMESZ-SZREG*2(sp)
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REG_S s1,FRAMESZ-SZREG*3(sp)
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/* Sanity check arguments. */
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li v0,EINVAL
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beqz a0,error /* no NULL function pointers */
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beqz a1,error /* no NULL stack pointers */
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beqz a0,error /* No NULL function pointers. */
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beqz a1,error /* No NULL stack pointers. */
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/* Allocate space on the new stack and copy args over */
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/* Save the arg for user's function */
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move s0,a3 /* Save arg __thread_start. */
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move s1,a0 /* Save func. pointer. */
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subu a1,32 /* Reserve argument save space. */
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sw a0,0(a1) /* Save function pointer. */
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sw a3,4(a1) /* Save argument pointer. */
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/* Do the system call */
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@ -75,16 +66,12 @@ NESTED(__clone,FRAMESZ,sp)
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beqz v0,__thread_start
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/* Successful return from the parent */
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REG_L s0,FRAMESZ-SZREG*2(sp)
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REG_L s1,FRAMESZ-SZREG*3(sp)
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PTR_ADDIU sp,FRAMESZ
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addiu sp,32
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ret
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/* Something bad happened -- no child created */
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error:
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REG_L s0,FRAMESZ-SZREG*2(sp)
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REG_L s1,FRAMESZ-SZREG*3(sp)
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PTR_ADDIU sp,FRAMESZ
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addiu sp,32
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#ifdef PIC
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la t9,__syscall_error
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jr t9
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At this point we have s0=arg, s1=fn. */
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NESTED(__thread_start,FRAMESZ,sp)
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/* cp is already loaded. */
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/* The stackframe has been created on entry of clone(). */
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/* Resort the arg for user's function. */
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move a0,s0
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move t9,s1
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move a0,0(sp) /* Function pointer. */
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move t9,4(sp) /* Argument pointer. */
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/* Call the user's function. */
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jalr t9
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