Repatch (from linux) of OSX IRAF

1 files changed, 60 insertions, 0 deletions

diff --git a/unix/as.linux64/zsvjmp.s.BAD b/unix/as.linux64/zsvjmp.s.BAD
new file mode 100644
index 00000000..74107830
--- /dev/null
+++ b/unix/as.linux64/zsvjmp.s.BAD
@@ -0,0 +1,60 @@
+	.file	"zsvjmp.s"
+
+# ZSVJMP, ZDOJMP -- Set up a jump (non-local goto) by saving the processor
+# registers in the buffer jmpbuf.  A subsequent call to ZDOJMP restores
+# the registers, effecting a call in the context of the procedure which
+# originally called ZSVJMP, but with the new status code.  These are Fortran
+# callable procedures.
+#
+#		zsvjmp (jmp_buf, status)	# (returns status)
+#		zdojmp (jmp_buf, status)	# (passes status to zsvjmp)
+#
+# These routines are directly comparable to the UNIX setjmp/longjmp, except
+# that they are Fortran callable kernel routines, i.e., trailing underscore,
+# call by reference, and no function returns.  ZSVJMP requires an assembler
+# jacket routine to avoid modifying the call stack, but relies upon setjmp
+# to do the real work.  ZDOJMP is implemented as a portable C routine in OS,
+# calling longjmp to do the restore.  In these routines, JMP_BUF consists
+# of one longword containing the address of the STATUS variable, followed
+# by the "jmp_buf" used by setjmp/longjmp.
+#
+# This file contains the FreeBSD (x86) version of ZSVJMP.
+# Modified to remove leading underscore for ELF (Jan99).
+ 
+        .globl	_zsvjmp_
+
+	# The following has nothing to do with ZSVJMP, and is included here
+	# only because this assembler module is loaded with every process.
+	# This code sets the value of the symbol MEM (the VOS or Fortran Mem
+	# common) to zero, setting the origin for IRAF pointers to zero
+	# rather than some arbitrary value, and ensuring that the MEM common
+	# is aligned for all datatypes as well as page aligned.  A further
+	# advantage is that references to NULL pointers are likely to cause a
+	# memory violation.
+
+	.globl	mem_
+	mem_	=	0
+	.globl	_mem_
+	_mem_	=	0
+
+_zsvjmp_:
+	pushl	%ebp
+	movl	%esp, %ebp
+	subl	$24, %esp
+	movl	12(%ebp), %eax
+	movl	$0, (%eax)
+	movl	12(%ebp), %eax
+	movl	(%eax), %edx
+	movl	8(%ebp), %eax
+	movl	%edx, (%eax)
+	movl	8(%ebp), %eax
+	addl	$4, %eax
+	movl	%eax, (%esp)
+	call	L_setjmp$stub
+	leave
+	ret
+	.section __IMPORT,__jump_table,symbol_stubs,self_modifying_code+pure_instructions,5
+L_setjmp$stub:
+	.indirect_symbol _setjmp
+	hlt ; hlt ; hlt ; hlt ; hlt
+	.subsections_via_symbols