[patch] Get rid of current_gdbarch in xtensa

[Markus Deuling <deuling@de.ibm.com>]

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Hi,

this patch get rid of the last to current_gdbarch's in xtensa target. Unfortunately I
dont have a xtensa machine here. If anyone has access to such a machine I'd welcome
a test run with this patch very much. Thanks in advance.

ChangeLog:

	* xtensa-tdep.c (call0_track_op): Add gdbarch as parameter and replace
	current_gdbarch. Update callers.
	(call0_analyze_prologue): Likewise.

Regards,
Markus

-- 
  Markus Deuling
  GNU Toolchain for Linux on Cell BE
  deuling@de.ibm.com


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diff -urpN src/gdb/xtensa-tdep.c dev/gdb/xtensa-tdep.c
--- src/gdb/xtensa-tdep.c	2008-05-16 06:17:17.000000000 +0200
+++ dev/gdb/xtensa-tdep.c	2008-05-16 08:09:09.000000000 +0200
@@ -1981,7 +1981,7 @@ call0_classify_opcode (xtensa_isa isa, x
 static void
 call0_track_op (xtensa_c0reg_t dst[], xtensa_c0reg_t src[],
 		xtensa_insn_kind opclass, int nods, unsigned odv[],
-		CORE_ADDR pc, int spreg)
+		CORE_ADDR pc, int spreg, struct gdbarch *gdbarch)
 {
   unsigned litbase, litaddr, litval;
 
@@ -2034,9 +2034,9 @@ call0_track_op (xtensa_c0reg_t dst[], xt
       /* 2 operands: dst, literal offset.  */
       gdb_assert (nods == 2);
       /* litbase = xtensa_get_litbase (pc); can be also used.  */
-      litbase = (gdbarch_tdep (current_gdbarch)->litbase_regnum == -1)
+      litbase = (gdbarch_tdep (gdbarch)->litbase_regnum == -1)
 	? 0 : xtensa_read_register
-		(gdbarch_tdep (current_gdbarch)->litbase_regnum);
+		(gdbarch_tdep (gdbarch)->litbase_regnum);
       litaddr = litbase & 1
 		  ? (litbase & ~1) + (signed)odv[1]
 		  : (pc + 3  + (signed)odv[1]) & ~3;
@@ -2093,8 +2093,9 @@ call0_track_op (xtensa_c0reg_t dst[], xt
       because they begin with default assumptions that analysis may change.  */
 
 static CORE_ADDR
-call0_analyze_prologue (CORE_ADDR start, CORE_ADDR pc,
-			int nregs, xtensa_c0reg_t rt[], int *call0)
+call0_analyze_prologue (CORE_ADDR start, CORE_ADDR pc, int nregs,
+			xtensa_c0reg_t rt[], int *call0,
+			struct gdbarch *gdbarch)
 {
   CORE_ADDR ia;		    /* Current insn address in prologue.  */
   CORE_ADDR ba = 0;	    /* Current address at base of insn buffer.  */
@@ -2285,7 +2286,7 @@ call0_analyze_prologue (CORE_ADDR start,
 	    }
 
 	  /* Track register movement and modification for this operation.  */
-	  call0_track_op (rt, rtmp, opclass, nods, odv, ia, 1);
+	  call0_track_op (rt, rtmp, opclass, nods, odv, ia, 1, gdbarch);
 	}
     }
 done:
@@ -2315,7 +2316,7 @@ call0_frame_cache (struct frame_info *th
     {
       body_pc = call0_analyze_prologue (start_pc, pc, C0_NREGS,
 					&cache->c0.c0_rt[0],
-					&cache->call0);
+					&cache->call0, gdbarch);
     }
   
   sp = get_frame_register_unsigned
@@ -2487,7 +2488,7 @@ xtensa_skip_prologue (struct gdbarch *gd
     }
 
   /* No debug line info.  Analyze prologue for Call0 or simply skip ENTRY.  */
-  body_pc = call0_analyze_prologue(start_pc, 0, 0, NULL, NULL);
+  body_pc = call0_analyze_prologue(start_pc, 0, 0, NULL, NULL, gdbarch);
   return body_pc != 0 ? body_pc : start_pc;
 }