Add rotating register rename support.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e0b7021ae8f9bd7c3f61c573e04d4e0aef67152d..4b28f5b580a41d7a4d56e82ee4ec3be2032c716a 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2000-09-06  Kevin Buettner  <kevinb@redhat.com>
+
+       * ia64-tdep.c (examine_prologue): Add rotating register rename
+       support for the general registers.
+       (ia64_get_saved_register): Add rotating register rename support
+       for the predicate registers and the floating-point registers.
+
 2000-09-05  Kevin Buettner  <kevinb@redhat.com>
 
        * config/arm/tm-linux.h (arm_linux_sigcontext_register_address,

diff --git a/gdb/ia64-tdep.c b/gdb/ia64-tdep.c
index eac25702871008422208001be36ac4be2156a12d..0a3aad841884e9da9055322a06b7c2c585ddc7ca 100644 (file)
--- a/gdb/ia64-tdep.c
+++ b/gdb/ia64-tdep.c
@@ -984,6 +984,13 @@ examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *frame)
   if (do_fsr_stuff) {
     int i;
     CORE_ADDR addr;
+    int sor, rrb_gr;
+    
+    /* Extract the size of the rotating portion of the stack
+       frame and the register rename base from the current
+       frame marker. */
+    sor = ((frame->extra_info->cfm >> 14) & 0xf) * 8;
+    rrb_gr = (frame->extra_info->cfm >> 18) & 0x7f;
 
     for (i = 0, addr = frame->extra_info->bsp;
         i < frame->extra_info->sof;
@@ -993,7 +1000,11 @@ examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *frame)
          {
            addr += 8;
          }
-       frame->saved_regs[IA64_GR32_REGNUM + i] = addr;
+       if (i < sor)
+         frame->saved_regs[IA64_GR32_REGNUM + ((i + (sor - rrb_gr)) % sor)] 
+           = addr;
+       else
+         frame->saved_regs[IA64_GR32_REGNUM + i] = addr;
 
        if (i+32 == cfm_reg)
          frame->saved_regs[IA64_CFM_REGNUM] = addr;
@@ -1125,6 +1136,16 @@ ia64_get_saved_register (char *raw_buffer,
       int prN_val;
       ia64_get_saved_register (pr_raw_buffer, &pr_optim, &pr_addr,
                                frame, IA64_PR_REGNUM, &pr_lval);
+      if (IA64_PR16_REGNUM <= regnum && regnum <= IA64_PR63_REGNUM)
+       {
+         /* Fetch predicate register rename base from current frame
+            marker for this frame. */
+         int rrb_pr = (frame->extra_info->cfm >> 32) & 0x3f;
+
+         /* Adjust the register number to account for register rotation. */
+         regnum = IA64_PR16_REGNUM 
+                + ((regnum - IA64_PR16_REGNUM) + rrb_pr) % 48;
+       }
       prN_val = extract_bit_field ((unsigned char *) pr_raw_buffer,
                                    regnum - IA64_PR0_REGNUM, 1);
       store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), prN_val);
@@ -1215,6 +1236,18 @@ ia64_get_saved_register (char *raw_buffer,
     }
   else
     {
+      if (IA64_FR32_REGNUM <= regnum && regnum <= IA64_FR127_REGNUM)
+       {
+         /* Fetch floating point register rename base from current
+            frame marker for this frame. */
+         int rrb_fr = (frame->extra_info->cfm >> 25) & 0x7f;
+
+         /* Adjust the floating point register number to account for
+            register rotation. */
+         regnum = IA64_FR32_REGNUM
+                + ((regnum - IA64_FR32_REGNUM) + rrb_fr) % 96;
+       }
+
       generic_get_saved_register (raw_buffer, optimized, addrp, frame,
                                   regnum, lval);
     }