2003-05-07 Jim Blandy <jimb@redhat.com>
+ Add support for assembly source testing on the s390x.
+ * gdb.asm/asm-source.exp: Add a case for the s390x-*-*
+ architecture.
+ * gdb.asm/s390x.inc: New file.
+
* gdb.asm/asm-source.exp: Use a 'switch -glob' statement, not a
succession of 'if' statements.
--- /dev/null
+### entry point code
+ .macro gdbasm_startup
+
+ # Align the stack pointer to an 8-byte boundary.
+ lghi %r0,-16
+ ngr %r15,%r0
+
+ # Reserve space for the standard stack frame:
+ # back chain, and space for the callee to save its registers.
+ aghi %r15,-168
+
+ # Zero this frame's back chain pointer.
+ xc 0(8,%r15),0(%r15)
+ .endm
+
+
+### Call a function.
+ .macro gdbasm_call subr
+ brasl %r14, \subr
+ .endm
+
+
+### Exit with a zero status.
+ .macro gdbasm_exit0
+ lghi %r2, 0
+ svc 1
+ .endm
+
+### Standard subroutine prologue.
+ .macro gdbasm_enter
+
+ # Save all the callee-saves registers. What the heck.
+ stmg %r6,%r15,48(%r15)
+
+ # Allocate the stack frame, and write the back chain pointer.
+ # Keep the original SP in %r11.
+ lgr %r11,%r15
+ aghi %r15,-168
+ stg %r11,0(%r15)
+ .endm
+
+
+### Standard subroutine epilogue.
+ .macro gdbasm_leave
+
+ # Restore all our registers. This also pops the frame, and
+ # restores our return address.
+ lmg %r6,%r15,216(%r15)
+
+ # Jump to the return address.
+ br %r14
+
+ .endm
+
+### Several nops.
+ .macro gdbasm_several_nops
+ lr %r0, %r0
+ lr %r0, %r0
+ lr %r0, %r0
+ lr %r0, %r0
+ .endm
+
+### Declare an `int' variable.
+ .macro gdbasm_datavar name value
+ .data
+\name:
+ .long \value
+ .endm