Update Traditional Chinese translation for the binutils sub-directory.

[deliverable/binutils-gdb.git] / gdb / riscv-fbsd-tdep.c

diff --git a/gdb/riscv-fbsd-tdep.c b/gdb/riscv-fbsd-tdep.c
index 4971546c1e42696b54b128094d4d1f82dd08b56c..50781c803991eae04ee7542ba151614fb2fce779 100644 (file)
--- a/gdb/riscv-fbsd-tdep.c
+++ b/gdb/riscv-fbsd-tdep.c
@@ -1,5 +1,5 @@
 /* Target-dependent code for FreeBSD on RISC-V processors.
-   Copyright (C) 2018 Free Software Foundation, Inc.
+   Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -25,6 +25,7 @@
 #include "target.h"
 #include "trad-frame.h"
 #include "tramp-frame.h"
+#include "gdbarch.h"
 
 /* Register maps.  */
 
@@ -134,7 +135,6 @@ riscv_fbsd_sigframe_init (const struct tramp_frame *self,
        + RISCV_SIGFRAME_UCONTEXT_OFFSET
        + RISCV_UCONTEXT_MCONTEXT_OFFSET);
   gdb_byte buf[4];
-  int i;
 
   trad_frame_set_reg_regmap (this_cache, riscv_fbsd_gregmap, mcontext_addr,
                             RISCV_FBSD_NUM_GREGS * riscv_isa_xlen (gdbarch));
@@ -175,13 +175,33 @@ static const struct tramp_frame riscv_fbsd_sigframe =
   riscv_fbsd_sigframe_init
 };
 
+/* Implement the "get_thread_local_address" gdbarch method.  */
+
+static CORE_ADDR
+riscv_fbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid,
+                                    CORE_ADDR lm_addr, CORE_ADDR offset)
+{
+  struct regcache *regcache;
+
+  regcache = get_thread_arch_regcache (ptid, gdbarch);
+
+  target_fetch_registers (regcache, RISCV_TP_REGNUM);
+
+  ULONGEST tp;
+  if (regcache->cooked_read (RISCV_TP_REGNUM, &tp) != REG_VALID)
+    error (_("Unable to fetch %%tp"));
+
+  /* %tp points to the end of the TCB which contains two pointers.
+      The first pointer in the TCB points to the DTV array.  */
+  CORE_ADDR dtv_addr = tp - (gdbarch_ptr_bit (gdbarch) / 8) * 2;
+  return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset);
+}
+
 /* Implement the 'init_osabi' method of struct gdb_osabi_handler.  */
 
 static void
 riscv_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
-  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-
   /* Generic FreeBSD support.  */
   fbsd_init_abi (info, gdbarch);
 
@@ -196,6 +216,11 @@ riscv_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 
   set_gdbarch_iterate_over_regset_sections
     (gdbarch, riscv_fbsd_iterate_over_regset_sections);
+
+  set_gdbarch_fetch_tls_load_module_address (gdbarch,
+                                            svr4_fetch_objfile_link_map);
+  set_gdbarch_get_thread_local_address (gdbarch,
+                                       riscv_fbsd_get_thread_local_address);
 }
 
 void