gas: remove use of PTR

[binutils-gdb.git] / gdb / ppc-fbsd-tdep.c

diff --git a/gdb/ppc-fbsd-tdep.c b/gdb/ppc-fbsd-tdep.c
index e709c36d585301fa75611a54f32f81bd33f20815..4afcc3019a497ed13a4cff00fbca74c4998c4178 100644 (file)
--- a/gdb/ppc-fbsd-tdep.c
+++ b/gdb/ppc-fbsd-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for PowerPC systems running FreeBSD.
 
-   Copyright (C) 2013-2018 Free Software Foundation, Inc.
+   Copyright (C) 2013-2022 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -35,6 +35,7 @@
 #include "ppc-fbsd-tdep.h"
 #include "fbsd-tdep.h"
 #include "solib-svr4.h"
+#include "inferior.h"
 
 
 /* 32-bit regset descriptions.  */
@@ -125,7 +126,7 @@ ppcfbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
                                      void *cb_data,
                                      const struct regcache *regcache)
 {
-  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+  ppc_gdbarch_tdep *tdep = (ppc_gdbarch_tdep *) gdbarch_tdep (gdbarch);
 
   if (tdep->wordsize == 4)
     cb (".reg", 148, 148, &ppc32_fbsd_gregset, NULL, cb_data);
@@ -175,7 +176,7 @@ ppcfbsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
       unsigned long insn;
 
       if (!safe_frame_unwind_memory (this_frame, start_pc + *offset,
-                                    buf, sizeof buf))
+                                    {buf, sizeof buf}))
        continue;
 
       /* Check for "li r0,SYS_sigreturn".  */
@@ -199,7 +200,7 @@ static struct trad_frame_cache *
 ppcfbsd_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache)
 {
   struct gdbarch *gdbarch = get_frame_arch (this_frame);
-  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+  ppc_gdbarch_tdep *tdep = (ppc_gdbarch_tdep *) gdbarch_tdep (gdbarch);
   struct trad_frame_cache *cache;
   CORE_ADDR addr, base, func;
   gdb_byte buf[PPC_INSN_SIZE];
@@ -213,7 +214,7 @@ ppcfbsd_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache)
 
   func = get_frame_pc (this_frame);
   func &= ~(ppcfbsd_page_size - 1);
-  if (!safe_frame_unwind_memory (this_frame, func, buf, sizeof buf))
+  if (!safe_frame_unwind_memory (this_frame, func, {buf, sizeof buf}))
     return cache;
 
   base = get_frame_register_unsigned (this_frame, gdbarch_sp_regnum (gdbarch));
@@ -262,6 +263,7 @@ ppcfbsd_sigtramp_frame_prev_register (struct frame_info *this_frame,
 }
 
 static const struct frame_unwind ppcfbsd_sigtramp_frame_unwind = {
+  "ppc freebsd sigtramp",
   SIGTRAMP_FRAME,
   default_frame_unwind_stop_reason,
   ppcfbsd_sigtramp_frame_this_id,
@@ -279,11 +281,45 @@ ppcfbsd_return_value (struct gdbarch *gdbarch, struct value *function,
                                           regcache, readbuf, writebuf);
 }
 
+/* Implement the "get_thread_local_address" gdbarch method.  */
+
+static CORE_ADDR
+ppcfbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid,
+                                 CORE_ADDR lm_addr, CORE_ADDR offset)
+{
+  ppc_gdbarch_tdep *tdep = (ppc_gdbarch_tdep *) gdbarch_tdep (gdbarch);
+  struct regcache *regcache;
+  int tp_offset, tp_regnum;
+
+  regcache = get_thread_arch_regcache (current_inferior ()->process_target (),
+                                      ptid, gdbarch);
+
+  if (tdep->wordsize == 4)
+    {
+      tp_offset = 0x7008;
+      tp_regnum = PPC_R0_REGNUM + 2;
+    }
+  else
+    {
+      tp_offset = 0x7010;
+      tp_regnum = PPC_R0_REGNUM + 13;
+    }
+  target_fetch_registers (regcache, tp_regnum);
+
+  ULONGEST tp;
+  if (regcache->cooked_read (tp_regnum, &tp) != REG_VALID)
+    error (_("Unable to fetch tcb pointer"));
+
+  /* tp points to the end of the TCB block.  The first member of the
+     TCB is the pointer to the DTV array.  */
+  CORE_ADDR dtv_addr = tp - tp_offset;
+  return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset);
+}
 
 static void
 ppcfbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
-  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+  ppc_gdbarch_tdep *tdep = (ppc_gdbarch_tdep *) gdbarch_tdep (gdbarch);
 
   /* Generic FreeBSD support. */
   fbsd_init_abi (info, gdbarch);
@@ -322,10 +358,13 @@ ppcfbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 
   set_gdbarch_fetch_tls_load_module_address (gdbarch,
                                             svr4_fetch_objfile_link_map);
+  set_gdbarch_get_thread_local_address (gdbarch,
+                                       ppcfbsd_get_thread_local_address);
 }
 
+void _initialize_ppcfbsd_tdep ();
 void
-_initialize_ppcfbsd_tdep (void)
+_initialize_ppcfbsd_tdep ()
 {
   gdbarch_register_osabi (bfd_arch_powerpc, bfd_mach_ppc, GDB_OSABI_FREEBSD,
                          ppcfbsd_init_abi);