*** empty log message ***

[pf3gnuchains/sourceware.git] / gdb / i386-nto-tdep.c

diff --git a/gdb/i386-nto-tdep.c b/gdb/i386-nto-tdep.c
index 248597f..7467d32 100644 (file)
--- a/gdb/i386-nto-tdep.c
+++ b/gdb/i386-nto-tdep.c
@@ -1,6 +1,7 @@
 /* Target-dependent code for QNX Neutrino x86.
 
-   Copyright (C) 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011
+   Free Software Foundation, Inc.
 
    Contributed by QNX Software Systems Ltd.
 
@@ -34,9 +35,6 @@
 #include "solib.h"
 #include "solib-svr4.h"
 
-/* Target vector for QNX NTO x86.  */
-static struct nto_target_ops i386_nto_target;
-
 #ifndef X86_CPU_FXSR
 #define X86_CPU_FXSR (1L << 12)
 #endif
@@ -124,7 +122,7 @@ i386nto_regset_id (int regno)
     return NTO_REG_END;
   else if (regno < I386_NUM_GREGS)
     return NTO_REG_GENERAL;
-  else if (regno < I386_NUM_GREGS + I386_NUM_FREGS)
+  else if (regno < I386_NUM_GREGS + I387_NUM_REGS)
     return NTO_REG_FLOAT;
   else if (regno < I386_SSE_NUM_REGS)
     return NTO_REG_FLOAT; /* We store xmm registers in fxsave_area.  */
@@ -290,34 +288,36 @@ i386nto_sigtramp_p (struct frame_info *this_frame)
   return name && strcmp ("__signalstub", name) == 0;
 }
 
-#define I386_NTO_SIGCONTEXT_OFFSET 136
-
 /* Assuming THIS_FRAME is a QNX Neutrino sigtramp routine, return the
    address of the associated sigcontext structure.  */
 
 static CORE_ADDR
 i386nto_sigcontext_addr (struct frame_info *this_frame)
 {
+  struct gdbarch *gdbarch = get_frame_arch (this_frame);
+  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   char buf[4];
-  CORE_ADDR sp;
+  CORE_ADDR ptrctx;
 
-  get_frame_register (this_frame, I386_ESP_REGNUM, buf);
-  sp = extract_unsigned_integer (buf, 4);
+  /* We store __ucontext_t addr in EDI register.  */
+  get_frame_register (this_frame, I386_EDI_REGNUM, buf);
+  ptrctx = extract_unsigned_integer (buf, 4, byte_order);
+  ptrctx += 24 /* Context pointer is at this offset.  */;
 
-  return sp + I386_NTO_SIGCONTEXT_OFFSET;
+  return ptrctx;
 }
 
 static void
 init_i386nto_ops (void)
 {
-  i386_nto_target.regset_id = i386nto_regset_id;
-  i386_nto_target.supply_gregset = i386nto_supply_gregset;
-  i386_nto_target.supply_fpregset = i386nto_supply_fpregset;
-  i386_nto_target.supply_altregset = nto_dummy_supply_regset;
-  i386_nto_target.supply_regset = i386nto_supply_regset;
-  i386_nto_target.register_area = i386nto_register_area;
-  i386_nto_target.regset_fill = i386nto_regset_fill;
-  i386_nto_target.fetch_link_map_offsets =
+  nto_regset_id = i386nto_regset_id;
+  nto_supply_gregset = i386nto_supply_gregset;
+  nto_supply_fpregset = i386nto_supply_fpregset;
+  nto_supply_altregset = nto_dummy_supply_regset;
+  nto_supply_regset = i386nto_supply_regset;
+  nto_register_area = i386nto_register_area;
+  nto_regset_fill = i386nto_regset_fill;
+  nto_fetch_link_map_offsets =
     svr4_ilp32_fetch_link_map_offsets;
 }
 
@@ -343,8 +343,8 @@ i386nto_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 
   tdep->sigtramp_p = i386nto_sigtramp_p;
   tdep->sigcontext_addr = i386nto_sigcontext_addr;
-  tdep->sc_pc_offset = 56;
-  tdep->sc_sp_offset = 68;
+  tdep->sc_reg_offset = i386nto_gregset_reg_offset;
+  tdep->sc_num_regs = ARRAY_SIZE (i386nto_gregset_reg_offset);
 
   /* Setjmp()'s return PC saved in EDX (5).  */
   tdep->jb_pc_offset = 20;     /* 5x32 bit ints in.  */
@@ -371,8 +371,6 @@ i386nto_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
         = nto_in_dynsym_resolve_code;
     }
   set_solib_ops (gdbarch, &nto_svr4_so_ops);
-
-  nto_set_target (&i386_nto_target);
 }
 
 /* Provide a prototype to silence -Wmissing-prototypes.  */