diff options
Diffstat (limited to 'sysdeps/unix/alpha/sysdep.S')
| -rw-r--r-- | sysdeps/unix/alpha/sysdep.S | 42 |
1 files changed, 36 insertions, 6 deletions
diff --git a/sysdeps/unix/alpha/sysdep.S b/sysdeps/unix/alpha/sysdep.S index c31508bc30..ce848f4e9b 100644 --- a/sysdeps/unix/alpha/sysdep.S +++ b/sysdeps/unix/alpha/sysdep.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1993, 1996, 1998, 2002 Free Software Foundation, Inc. +/* Copyright (C) 1993, 1996, 1998, 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Brendan Kehoe (brendan@zen.org). @@ -35,9 +35,26 @@ have we loaded PV with our address. Do both. */ # define LOADGP br pv, 1f; 1: ldgp gp, 0(pv) # define PROLOGUE .prologue 0 +# define EPILOGUE #else -# define LOADGP ldgp gp, 0(pv) + /* When building the static library, we tail call here from + elsewhere, which might use a different GP. The entertaining + part is that we have to return with the GP of our caller + in place, so that linker relaxation works properly. */ + /* ??? This is so ugly. Consider always putting the errno + setting code with the syscall in the static case. */ +# define GPSAVEREG t10 +# define LOADGP ldah t11, 0(pv) !gpdisp!1; \ + br 1f; \ + .subsection 2; \ + 1: mov gp, GPSAVEREG; \ + lda gp, 0(t11) !gpdisp!1; \ + br 2f; \ + .previous; \ + mov gp, GPSAVEREG; \ + 2: # define PROLOGUE .prologue 1 +# define EPILOGUE mov GPSAVEREG, gp #endif .align 4 @@ -61,16 +78,20 @@ __syscall_error: addq v0, t1, v0 stl t0, 0(v0) lda v0, -1 + EPILOGUE ret #elif defined(_LIBC_REENTRANT) LOADGP - lda sp, -16(sp) - .frame sp, 16, ra, 0 + lda sp, -32(sp) + .frame sp, 32, ra, 0 stq ra, 0(sp) stq v0, 8(sp) - .mask 0x4000001, -16 +#ifdef GPSAVEREG + stq GPSAVEREG, 16(sp) +#endif + .mask 0x4000001, -32 PROLOGUE /* Find our per-thread errno address */ @@ -78,6 +99,9 @@ __syscall_error: bsr ra, __errno_location !samegp #else jsr ra, __errno_location +#ifndef GPSAVEREG + ldgp gp, 0(ra) +#endif #endif /* Store the error value. */ @@ -87,8 +111,12 @@ __syscall_error: /* And kick back a -1. */ ldi v0, -1 +#ifdef GPSAVEREG + ldq GPSAVEREG, 16(sp) +#endif ldq ra, 0(sp) - lda sp, 16(sp) + lda sp, 32(sp) + EPILOGUE ret #else @@ -97,8 +125,10 @@ __syscall_error: PROLOGUE stl v0, errno lda v0, -1 + EPILOGUE ret #endif + .subsection 3 .end __syscall_error |