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-rw-r--r--sysdeps/unix/sysv/irix4/__handler.S117
1 files changed, 0 insertions, 117 deletions
diff --git a/sysdeps/unix/sysv/irix4/__handler.S b/sysdeps/unix/sysv/irix4/__handler.S
deleted file mode 100644
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--- a/sysdeps/unix/sysv/irix4/__handler.S
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@@ -1,117 +0,0 @@
-/* Copyright (C) 1992, 1997 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Brendan Kehoe (brendan@cs.widener.edu).
- Also hacked by Ian Lance Taylor (ian@airs.com).
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <sysdep.h>
-
-/* This function saves all the registers, calls the
- user function, and then executes a sigreturn system call. The
- sigreturn call wants the address of a sigcontext structure. This
- is all hideously system dependent and, for all intents and
- purposes, undocumented.
-
- When we enter here, a3 holds the user's signal handler. We are
- supposed to fill in the context given in a2, and then pass it and
- the first two arguments to the user's function. If the user's
- function returns, we execute a sigreturn system call.
-
- The sc_onstack, sc_mask and sc_pc elements of the context are
- already set by the kernel. For some reason we don't have to save
- the floating point state or the coprocessor state; the kernel may
- have saved them for us, or it doesn't use them. */
-
-.set noat
-ENTRY (__handler)
-#if 0
- /* Store zero and the asm temp reg. */
- sw $0, 12(a2)
- sw AT, 16(a2)
-
- /* Put v1 in sc_regs[3]. */
- sw v1, 24(a2)
-
- /* Save the caller saved registers in sc_regs[8..15]. */
- sw t0, 44(a2)
- sw t1, 48(a2)
- sw t2, 52(a2)
- sw t3, 56(a2)
- sw t4, 60(a2)
- sw t5, 64(a2)
- sw t6, 68(a2)
- sw t7, 72(a2)
-
- /* Save the callee saved registers in sc_regs[16..23]. */
- sw s0, 76(a2)
- sw s1, 80(a2)
- sw s2, 84(a2)
- sw s3, 88(a2)
- sw s4, 92(a2)
- sw s5, 96(a2)
- sw s6, 100(a2)
- sw s7, 104(a2)
-
- /* Save the code generator registers in sc_regs[24] & sc_regs[25]. */
- sw t8, 108(a2)
- sw t9, 112(a2)
-
- /* Save the kernel temp regs in sc_regs[26] & sc_regs[27]. */
- sw k0, 116(a2)
- sw k1, 120(a2)
-
- /* Save the global pointer in sc_regs[28]. */
- sw gp, 124(a2)
-
- /* ... and also the return address in sc_regs[31]. */
- sw ra, 136(a2)
-
- /* Note: we don't save the stack pointer in sc_regs[29];
- instead, we use the one that was already there. */
-#if 0
- sw sp, 128(a2)
-#endif
-
- /* Save the floating pointer in sc_regs[30]. */
- sw fp, 132(a2)
-
- /* Save the mul/div stuff in sc_mdlo and sc_mdhi. */
- mflo t0
- sw t0, 140(a2)
- mfhi t0
- sw t0, 144(a2)
-
-#endif
- /* Move the stack up six. This will save the context. */
- addu sp, sp, -24
- sw a2, 16(sp)
-
- /* Call their handler with the signal, code, and context; note
- this will clobber the context. */
- .set noreorder
- jal ra, a3
- nop
- .set reorder
-
- /* When we come back, restore the context and pass it right
- on into sigreturn(). */
- lw a0, 16(sp)
-
- /* Do a sigreturn syscall; this doesn't return. */
- li v0, SYS_sigreturn
- syscall
- nop