* gdbarch.sh (software_single_step): Replace REGCACHE argument by

	FRAME argument.
	* gdbarch.c, gdbarch.h: Regenerate.
	* infrun.c (resume): Pass current frame to SOFTWARE_SINGLE_STEP.

	* alpha-tdep.c (alpha_next_pc): Add FRAME argument.  Retrieve
	registers from FRAME instead of using read_register.
	(alpha_software_single_step): Replace REGCACHE by FRAME.  Pass FRAME
	to alpha_next_pc.  Use get_frame_pc instead of read_pc.
	* alpha-tdep.h (alpha_software_single_step): Replace REGCACHE
	argument by FRAME.

	* arm-tdep.c (shifted_reg_val): Add FRAME argument.  Read registers
	from FRAME instead of using read_register.
	(thumb_get_next_pc): Likewise.
	(arm_get_next_pc): Likewise.
	(arm_software_single_step): Replace REGCACHE by FRAME.  Pass FRAME
	to arm_get_next_pc.  Use get_frame_pc instead of read_register.
	* arm-tdep.h (arm_software_single_step): Replace REGCACHE
	argument by FRAME.

	* cris-tdep.c (find_step_target): Add FRAME argument.  Read registers
	from FRAME instead of using read_register.
	(cris_software_single_step): Replace REGCACHE by FRAME.  Pass FRAME
	to find_step_target.

	* mips-tdep.c (mips32_next_pc): Add FRAME argument.  Read registers
	from FRAME instead of using read_register / read_signed_register.
	(extended_mips16_next_pc): Likewise.
	(mips16_next_pc): Likewise.
	(mips_next_pc): Likewise.
	(mips_software_single_step): Replace REGCACHE by FRAME.  Pass FRAME
	to mips_next_pc.  Use get_frame_pc instead of read_pc.
	* mips-tdep.h (mips_software_single_step): Replace REGCACHE
	argument by FRAME.

	* rs6000-tdep.c (branch_dest): Add FRAME argument.  Use it instead
	of current frame.  Read registers from FRAME.
	(deal_with_atomic_sequence): Add FRAME argument.  Pass it to
	branch_dest.  Use get_frame_pc instead of read_pc.
	(rs6000_software_single_step): Likewise.
	(bl_to_blrl_insn_p): Do not call branch_dest.
	* rs6000-tdep.h (rs6000_software_single_step): Replace REGCACHE
	argument by FRAME.

	* sparc64-linux-tdep.c (sparc64_linux_step_trap): Add FRAME argument.
	Read registers from FRAME instead of current regcache.
	* sparc-linux-tdep.c (sparc32_linux_step_trap): Likewise.
	* sparcnbsd-tdep.c (sparcnbsd_step_trap): Likewise.
	* sparc-tdep.c (sparc_address_from_register): Remove.
	(sparc_analyze_control_transfer): Pass FRAME argument instead of
	GDBARCH.  Pass FRAME to step_trap callback.
	(sparc_step_trap): Add FRAME argument.
	(space_software_single_step): Replace REGCACHE by FRAME.  Pass FRAME
	to sparc_analyze_control_transfer.  Read registers from FRAME instead
	of calling sparc_address_from_register.
	* sparc-tdep.h (struct gdbarch_tdep): Add FRAME argument to
	step_trap callback.
	(sparc_address_from_register): Remove prototype.
	(sparc_software_single_step): Replace REGCACHE argument by FRAME.
	(sparcnbsd_step_trap): Add FRAME argument.

	* spu-tdep.c (spu_software_single_step): Replace REGCACHE argument
	by FRAME.  Read registers from FRAME instead of REGCACHE.

1 files changed, 8 insertions, 20 deletions

diff --git a/gdb/sparc-tdep.c b/gdb/sparc-tdep.c
index 0e2a496..bc93b05 100644
--- a/gdb/sparc-tdep.c
+++ b/gdb/sparc-tdep.c
@@ -170,18 +170,6 @@ sparc_fetch_wcookie (void)
 }
 
 
-/* Return the contents if register REGNUM as an address.  */
-
-CORE_ADDR
-sparc_address_from_register (int regnum)
-{
-  ULONGEST addr;
-
-  regcache_cooked_read_unsigned (current_regcache, regnum, &addr);
-  return addr;
-}
-
-
 /* The functions on this page are intended to be used to classify
    function arguments.  */
 
@@ -1249,7 +1237,7 @@ sparc32_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
    software single-step mechanism.  */
 
 static CORE_ADDR
-sparc_analyze_control_transfer (struct gdbarch *arch,
+sparc_analyze_control_transfer (struct frame_info *frame,
 				CORE_ADDR pc, CORE_ADDR *npc)
 {
   unsigned long insn = sparc_fetch_instruction (pc);
@@ -1291,7 +1279,7 @@ sparc_analyze_control_transfer (struct gdbarch *arch,
   else if (X_OP (insn) == 2 && X_OP3 (insn) == 0x3a)
     {
       /* Trap instruction (TRAP).  */
-      return gdbarch_tdep (arch)->step_trap (insn);
+      return gdbarch_tdep (get_frame_arch (frame))->step_trap (frame, insn);
     }
 
   /* FIXME: Handle DONE and RETRY instructions.  */
@@ -1324,25 +1312,25 @@ sparc_analyze_control_transfer (struct gdbarch *arch,
 }
 
 static CORE_ADDR
-sparc_step_trap (unsigned long insn)
+sparc_step_trap (struct frame_info *frame, unsigned long insn)
 {
   return 0;
 }
 
 int
-sparc_software_single_step (struct regcache *regcache)
+sparc_software_single_step (struct frame_info *frame)
 {
-  struct gdbarch *arch = current_gdbarch;
+  struct gdbarch *arch = get_frame_arch (frame);
   struct gdbarch_tdep *tdep = gdbarch_tdep (arch);
   CORE_ADDR npc, nnpc;
 
   CORE_ADDR pc, orig_npc;
 
-  pc = sparc_address_from_register (tdep->pc_regnum);
-  orig_npc = npc = sparc_address_from_register (tdep->npc_regnum);
+  pc = get_frame_register_unsigned (frame, tdep->pc_regnum);
+  orig_npc = npc = get_frame_register_unsigned (frame, tdep->npc_regnum);
 
   /* Analyze the instruction at PC.  */
-  nnpc = sparc_analyze_control_transfer (arch, pc, &npc);
+  nnpc = sparc_analyze_control_transfer (frame, pc, &npc);
   if (npc != 0)
     insert_single_step_breakpoint (npc);