gcc:

[pf3gnuchains/gcc-fork.git] / gcc / config / i386 / i386.c

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 3a3b2ac..5620765 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -53,6 +53,8 @@ along with GCC; see the file COPYING3.  If not see
 #include "tm-constrs.h"
 #include "params.h"
 #include "cselib.h"
+#include "debug.h"
+#include "dwarf2out.h"
 
 static rtx legitimize_dllimport_symbol (rtx, bool);
 
@@ -1910,6 +1912,10 @@ static unsigned int ix86_minimum_incoming_stack_boundary (bool);
 static enum calling_abi ix86_function_abi (const_tree);
 
 \f
+#ifndef SUBTARGET32_DEFAULT_CPU
+#define SUBTARGET32_DEFAULT_CPU "i386"
+#endif
+
 /* The svr4 ABI for the i386 says that records and unions are returned
    in memory.  */
 #ifndef DEFAULT_PCC_STRUCT_RETURN
@@ -2876,7 +2882,7 @@ override_options (bool main_args_p)
     }
 
   if (!ix86_arch_string)
-    ix86_arch_string = TARGET_64BIT ? "x86-64" : "i386";
+    ix86_arch_string = TARGET_64BIT ? "x86-64" : SUBTARGET32_DEFAULT_CPU;
   else
     ix86_arch_specified = 1;
 
@@ -7584,6 +7590,9 @@ ix86_file_end (void)
   for (regno = 0; regno < 8; ++regno)
     {
       char name[32];
+#ifdef DWARF2_UNWIND_INFO
+      bool do_cfi;
+#endif
 
       if (! ((pic_labels_used >> regno) & 1))
        continue;
@@ -7629,10 +7638,19 @@ ix86_file_end (void)
          ASM_OUTPUT_LABEL (asm_out_file, name);
        }
 
+#ifdef DWARF2_UNWIND_INFO
+      do_cfi = dwarf2out_do_cfi_asm ();
+      if (do_cfi)
+       fprintf (asm_out_file, "\t.cfi_startproc\n");
+#endif
       xops[0] = gen_rtx_REG (Pmode, regno);
       xops[1] = gen_rtx_MEM (Pmode, stack_pointer_rtx);
       output_asm_insn ("mov%z0\t{%1, %0|%0, %1}", xops);
       output_asm_insn ("ret", xops);
+#ifdef DWARF2_UNWIND_INFO
+      if (do_cfi)
+       fprintf (asm_out_file, "\t.cfi_endproc\n");
+#endif
     }
 
   if (NEED_INDICATE_EXEC_STACK)
@@ -7673,7 +7691,24 @@ output_set_got (rtx dest, rtx label ATTRIBUTE_UNUSED)
       if (!flag_pic)
        output_asm_insn ("mov%z0\t{%2, %0|%0, %2}", xops);
       else
-       output_asm_insn ("call\t%a2", xops);
+       {
+         output_asm_insn ("call\t%a2", xops);
+#ifdef DWARF2_UNWIND_INFO
+         /* The call to next label acts as a push.  */
+         if (dwarf2out_do_frame ())
+           {
+             rtx insn;
+             start_sequence ();
+             insn = emit_insn (gen_rtx_SET (VOIDmode, stack_pointer_rtx,
+                                            gen_rtx_PLUS (Pmode,
+                                                          stack_pointer_rtx,
+                                                          GEN_INT (-4))));
+             RTX_FRAME_RELATED_P (insn) = 1;
+             dwarf2out_frame_debug (insn, true);
+             end_sequence ();
+           }
+#endif
+       }
 
 #if TARGET_MACHO
       /* Output the Mach-O "canonical" label name ("Lxx$pb") here too.  This
@@ -7686,7 +7721,27 @@ output_set_got (rtx dest, rtx label ATTRIBUTE_UNUSED)
                                 CODE_LABEL_NUMBER (XEXP (xops[2], 0)));
 
       if (flag_pic)
-       output_asm_insn ("pop%z0\t%0", xops);
+       {
+         output_asm_insn ("pop%z0\t%0", xops);
+#ifdef DWARF2_UNWIND_INFO
+         /* The pop is a pop and clobbers dest, but doesn't restore it
+            for unwind info purposes.  */
+         if (dwarf2out_do_frame ())
+           {
+             rtx insn;
+             start_sequence ();
+             insn = emit_insn (gen_rtx_SET (VOIDmode, dest, const0_rtx));
+             dwarf2out_frame_debug (insn, true);
+             insn = emit_insn (gen_rtx_SET (VOIDmode, stack_pointer_rtx,
+                                            gen_rtx_PLUS (Pmode,
+                                                          stack_pointer_rtx,
+                                                          GEN_INT (4))));
+             RTX_FRAME_RELATED_P (insn) = 1;
+             dwarf2out_frame_debug (insn, true);
+             end_sequence ();
+           }
+#endif
+       }
     }
   else
     {
@@ -7694,6 +7749,18 @@ output_set_got (rtx dest, rtx label ATTRIBUTE_UNUSED)
       get_pc_thunk_name (name, REGNO (dest));
       pic_labels_used |= 1 << REGNO (dest);
 
+#ifdef DWARF2_UNWIND_INFO
+      /* Ensure all queued register saves are flushed before the
+        call.  */
+      if (dwarf2out_do_frame ())
+       {
+         rtx insn;
+         start_sequence ();
+         insn = emit_barrier ();
+         end_sequence ();
+         dwarf2out_frame_debug (insn, false);
+       }
+#endif
       xops[2] = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (name));
       xops[2] = gen_rtx_MEM (QImode, xops[2]);
       output_asm_insn ("call\t%X2", xops);
@@ -8330,7 +8397,11 @@ ix86_get_drap_rtx (void)
       end_sequence ();
       
       insn = emit_insn_before (seq, NEXT_INSN (entry_of_function ()));
-      RTX_FRAME_RELATED_P (insn) = 1;
+      if (!optimize)
+       {
+         add_reg_note (insn, REG_CFA_SET_VDRAP, drap_vreg);
+         RTX_FRAME_RELATED_P (insn) = 1;
+       }
       return drap_vreg;
     }
   else
@@ -26298,7 +26369,7 @@ x86_function_profiler (FILE *file, int labelno ATTRIBUTE_UNUSED)
   if (TARGET_64BIT)
     {
 #ifndef NO_PROFILE_COUNTERS
-      fprintf (file, "\tleaq\t" LPREFIX "P%d@(%%rip),%%r11\n", labelno);
+      fprintf (file, "\tleaq\t" LPREFIX "P%d(%%rip),%%r11\n", labelno);
 #endif
 
       if (DEFAULT_ABI == SYSV_ABI && flag_pic)