* ld-cris/expdyn1.d, ld-cris/expdyn5.d, ld-cris/expdyn6.d,

[deliverable/binutils-gdb.git] / gdb / amd64-tdep.c

diff --git a/gdb/amd64-tdep.c b/gdb/amd64-tdep.c
index d16571411bd9c26e39a0bad51dd306442d5daf90..90a4e11bed0323996bbec044477ce4b97688f5b5 100644 (file)
--- a/gdb/amd64-tdep.c
+++ b/gdb/amd64-tdep.c
@@ -422,11 +422,28 @@ amd64_return_value (struct gdbarch *gdbarch, struct type *type,
   amd64_classify (type, class);
 
   /* 2. If the type has class MEMORY, then the caller provides space
-        for the return value and passes the address of this storage in
-        %rdi as if it were the first argument to the function. In
-        effect, this address becomes a hidden first argument.  */
+     for the return value and passes the address of this storage in
+     %rdi as if it were the first argument to the function. In effect,
+     this address becomes a hidden first argument.
+
+     On return %rax will contain the address that has been passed in
+     by the caller in %rdi.  */
   if (class[0] == AMD64_MEMORY)
-    return RETURN_VALUE_STRUCT_CONVENTION;
+    {
+      /* As indicated by the comment above, the ABI guarantees that we
+         can always find the return value just after the function has
+         returned.  */
+
+      if (readbuf)
+       {
+         ULONGEST addr;
+
+         regcache_raw_read_unsigned (regcache, AMD64_RAX_REGNUM, &addr);
+         read_memory (addr, readbuf, TYPE_LENGTH (type));
+       }
+
+      return RETURN_VALUE_ABI_RETURNS_ADDRESS;
+    }
 
   gdb_assert (class[1] != AMD64_MEMORY);
   gdb_assert (len <= 16);
@@ -629,7 +646,7 @@ amd64_push_arguments (struct regcache *regcache, int nargs,
 }
 
 static CORE_ADDR
-amd64_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr,
+amd64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
                       struct regcache *regcache, CORE_ADDR bp_addr,
                       int nargs, struct value **args,  CORE_ADDR sp,
                       int struct_return, CORE_ADDR struct_addr)
@@ -764,7 +781,7 @@ amd64_skip_prologue (CORE_ADDR start_pc)
   struct amd64_frame_cache cache;
   CORE_ADDR pc;
 
-  pc = amd64_analyze_prologue (start_pc, 0xffffffffffffffff, &cache);
+  pc = amd64_analyze_prologue (start_pc, 0xffffffffffffffffLL, &cache);
   if (cache.frameless_p)
     return start_pc;
 
@@ -1031,20 +1048,36 @@ amd64_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
 }
 \f
 
-/* Supply register REGNUM from the floating-point register set REGSET
-   to register cache REGCACHE.  If REGNUM is -1, do this for all
-   registers in REGSET.  */
+/* Supply register REGNUM from the buffer specified by FPREGS and LEN
+   in the floating-point register set REGSET to register cache
+   REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
 
 static void
 amd64_supply_fpregset (const struct regset *regset, struct regcache *regcache,
                       int regnum, const void *fpregs, size_t len)
 {
-  const struct gdbarch_tdep *tdep = regset->descr;
+  const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
 
   gdb_assert (len == tdep->sizeof_fpregset);
   amd64_supply_fxsave (regcache, regnum, fpregs);
 }
 
+/* Collect register REGNUM from the register cache REGCACHE and store
+   it in the buffer specified by FPREGS and LEN as described by the
+   floating-point register set REGSET.  If REGNUM is -1, do this for
+   all registers in REGSET.  */
+
+static void
+amd64_collect_fpregset (const struct regset *regset,
+                       const struct regcache *regcache,
+                       int regnum, void *fpregs, size_t len)
+{
+  const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
+
+  gdb_assert (len == tdep->sizeof_fpregset);
+  amd64_collect_fxsave (regcache, regnum, fpregs);
+}
+
 /* Return the appropriate register set for the core section identified
    by SECT_NAME and SECT_SIZE.  */
 
@@ -1057,11 +1090,8 @@ amd64_regset_from_core_section (struct gdbarch *gdbarch,
   if (strcmp (sect_name, ".reg2") == 0 && sect_size == tdep->sizeof_fpregset)
     {
       if (tdep->fpregset == NULL)
-       {
-         tdep->fpregset = XMALLOC (struct regset);
-         tdep->fpregset->descr = tdep;
-         tdep->fpregset->supply_regset = amd64_supply_fpregset;
-       }
+       tdep->fpregset = regset_alloc (gdbarch, amd64_supply_fpregset,
+                                      amd64_collect_fpregset);
 
       return tdep->fpregset;
     }