gdb/darwin: remove not-so-harmless spurious call to `wait4`

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

diff --git a/gdb/amd64-obsd-tdep.c b/gdb/amd64-obsd-tdep.c
index cd1a1c31b886b51feab3db2c8d847c5638fa9c4f..3cb64fe924f028f4d74e0d8c7c634abafde4e289 100644 (file)
--- a/gdb/amd64-obsd-tdep.c
+++ b/gdb/amd64-obsd-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for OpenBSD/amd64.
 
-   Copyright (C) 2003-2019 Free Software Foundation, Inc.
+   Copyright (C) 2003-2022 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -32,7 +32,7 @@
 #include "obsd-tdep.h"
 #include "amd64-tdep.h"
 #include "i387-tdep.h"
-#include "common/x86-xstate.h"
+#include "gdbsupport/x86-xstate.h"
 #include "solib-svr4.h"
 #include "bsd-uthread.h"
 
@@ -78,7 +78,7 @@ amd64obsd_sigtramp_p (struct frame_info *this_frame)
 
   /* If we can't read the instructions at START_PC, return zero.  */
   buf = (gdb_byte *) alloca ((sizeof sigreturn) + 1);
-  if (!safe_frame_unwind_memory (this_frame, start_pc + 6, buf, buflen))
+  if (!safe_frame_unwind_memory (this_frame, start_pc + 6, {buf, buflen}))
     return 0;
 
   /* Check for sigreturn(2).  Depending on how the assembler encoded
@@ -106,11 +106,11 @@ amd64obsd_sigcontext_addr (struct frame_info *this_frame)
   /* The %rsp register points at `struct sigcontext' upon entry of a
      signal trampoline.  The relevant part of the trampoline is
 
-        call    *%rax
-        movq    %rsp, %rdi
-        pushq   %rdi
-        movq    $SYS_sigreturn,%rax
-        int     $0x80
+       call    *%rax
+       movq    %rsp, %rdi
+       pushq   %rdi
+       movq    $SYS_sigreturn,%rax
+       int     $0x80
 
      (see /usr/src/sys/arch/amd64/amd64/locore.S).  The `pushq'
      instruction clobbers %rsp, but its value is saved in `%rdi'.  */
@@ -238,7 +238,7 @@ amd64obsd_supply_uthread (struct regcache *regcache,
       sp = read_memory_unsigned_integer (sp_addr, 8, byte_order);
 
       /* Adjust the stack pointer such that it looks as if we just
-         returned from _thread_machdep_switch.  */
+        returned from _thread_machdep_switch.  */
       offset = amd64obsd_uthread_reg_offset[AMD64_RIP_REGNUM] + 8;
       store_unsigned_integer (buf, 8, byte_order, sp + offset);
       regcache->raw_supply (AMD64_RSP_REGNUM, buf);
@@ -250,7 +250,7 @@ amd64obsd_supply_uthread (struct regcache *regcache,
          && (regnum == -1 || regnum == i))
        {
          /* Fetch stack pointer from thread structure (if we didn't
-             do so already).  */
+            do so already).  */
          if (sp == 0)
            sp = read_memory_unsigned_integer (sp_addr, 8, byte_order);
 
@@ -279,7 +279,7 @@ amd64obsd_collect_uthread (const struct regcache *regcache,
       int offset;
 
       /* Calculate the stack pointer (frame pointer) that will be
-         stored into the thread structure.  */
+        stored into the thread structure.  */
       offset = amd64obsd_uthread_reg_offset[AMD64_RIP_REGNUM] + 8;
       regcache->raw_collect (AMD64_RSP_REGNUM, buf);
       sp = extract_unsigned_integer (buf, 8, byte_order) - offset;
@@ -288,7 +288,7 @@ amd64obsd_collect_uthread (const struct regcache *regcache,
       write_memory_unsigned_integer (sp_addr, 8, byte_order, sp);
 
       /* The stack pointer was (potentially) modified.  Make sure we
-         build a proper stack frame.  */
+        build a proper stack frame.  */
       regnum = -1;
     }
 
@@ -298,7 +298,7 @@ amd64obsd_collect_uthread (const struct regcache *regcache,
          && (regnum == -1 || regnum == i))
        {
          /* Fetch stack pointer from thread structure (if we didn't
-             calculate it already).  */
+            calculate it already).  */
          if (sp == 0)
            sp = read_memory_unsigned_integer (sp_addr, 8, byte_order);
 
@@ -402,10 +402,12 @@ amd64obsd_trapframe_sniffer (const struct frame_unwind *self,
                   || (startswith (name, "Xintr"))));
 }
 
-static const struct frame_unwind amd64obsd_trapframe_unwind = {
+static const struct frame_unwind amd64obsd_trapframe_unwind =
+{
   /* FIXME: kettenis/20051219: This really is more like an interrupt
      frame, but SIGTRAMP_FRAME would print <signal handler called>,
      which really is not what we want here.  */
+  "amd64 openbsd trap",
   NORMAL_FRAME,
   default_frame_unwind_stop_reason,
   amd64obsd_trapframe_this_id,
@@ -418,7 +420,7 @@ static const struct frame_unwind amd64obsd_trapframe_unwind = {
 static void
 amd64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
-  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+  i386_gdbarch_tdep *tdep = (i386_gdbarch_tdep *) gdbarch_tdep (gdbarch);
 
   amd64_init_abi (info, gdbarch,
                  amd64_target_description (X86_XSTATE_SSE_MASK, true));
@@ -448,8 +450,9 @@ amd64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   frame_unwind_prepend_unwinder (gdbarch, &amd64obsd_trapframe_unwind);
 }
 
+void _initialize_amd64obsd_tdep ();
 void
-_initialize_amd64obsd_tdep (void)
+_initialize_amd64obsd_tdep ()
 {
   /* The OpenBSD/amd64 native dependent code makes this assumption.  */
   gdb_assert (ARRAY_SIZE (amd64obsd_r_reg_offset) == AMD64_NUM_GREGS);