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| author | "Steven J. Hill" <sjhill@realitydiluted.com> | 2005-09-03 05:30:59 +0000 |
|---|---|---|
| committer | "Steven J. Hill" <sjhill@realitydiluted.com> | 2005-09-03 05:30:59 +0000 |
| commit | bc92b8b0af4a59ea83592d2e1d4bf2c21a06d7ec (patch) | |
| tree | 68b6d1d65266e5e51f41bd292b6ab937f84af01b /libc/sysdeps/linux/mips/vfork.S | |
| parent | 9b753727a42d0be0bc0fe110b4d0c582fefc9832 (diff) | |
| download | uClibc-alpine-bc92b8b0af4a59ea83592d2e1d4bf2c21a06d7ec.tar.bz2 uClibc-alpine-bc92b8b0af4a59ea83592d2e1d4bf2c21a06d7ec.tar.xz | |
Import latest 'clone' and 'vfork' functions from glibc. These have been tested with the 'linuxthreads' thread model and normal uClibc using the included test suite. This puts me very close to having static NPTL applications working.
Diffstat (limited to 'libc/sysdeps/linux/mips/vfork.S')
| -rw-r--r-- | libc/sysdeps/linux/mips/vfork.S | 39 |
1 files changed, 33 insertions, 6 deletions
diff --git a/libc/sysdeps/linux/mips/vfork.S b/libc/sysdeps/linux/mips/vfork.S index bdac50b02..0dbf62e31 100644 --- a/libc/sysdeps/linux/mips/vfork.S +++ b/libc/sysdeps/linux/mips/vfork.S @@ -20,11 +20,37 @@ #include <sys/asm.h> #include <sysdep.h> -#ifndef __UCLIBC__ -#include <asm/unistd.h> -#endif #include <sgidefs.h> +#ifdef __PTHREADS_NATIVE__ +#include <tls.h> + +/* Save the PID value. */ +#ifndef SAVE_PID +#define SAVE_PID \ + READ_THREAD_POINTER(v1); /* Get the thread pointer. */ \ + lw a2, PID_OFFSET(v1); /* Load the saved PID. */ \ + subu a2, $0, a2; /* Negate it. */ \ + bnez a2, 1f; /* If it was zero... */ \ + lui a2, 0x8000; /* use 0x80000000 instead. */ \ +1: sw a2, PID_OFFSET(v1); /* Store the temporary PID. */ +#endif + +/* Restore the old PID value in the parent. */ +#ifndef RESTORE_PID +#define RESTORE_PID \ + beqz v0, 1f; /* If we are the parent... */ \ + READ_THREAD_POINTER(v1); /* Get the thread pointer. */ \ + lw a2, PID_OFFSET(v1); /* Load the saved PID. */ \ + subu a2, $0, a2; /* Re-negate it. */ \ + lui a0, 0x8000; /* Load 0x80000000... */ \ + bne a2, a0, 2f; /* ... compare against it... */ \ + li a2, 0; /* ... use 0 instead. */ \ +2: sw a2, PID_OFFSET(v1); /* Restore the PID. */ \ +1: +#endif +#endif + #ifndef SAVE_PID #define SAVE_PID #endif @@ -82,7 +108,8 @@ NESTED(__vfork,FRAMESZ,sp) /* Successful return from the parent or child. */ RESTORE_GP64 - ret + j ra + nop /* Something bad happened -- no child created. */ L(error): @@ -96,5 +123,5 @@ L(error): #endif END(__vfork) -libc_hidden_def(__vfork) -weak_alias (__vfork, vfork) +.weak vfork; + vfork = __vfork |