Convert some frame functions to use gdb::array_view.

This patch converts the most obvious functions from gdb/frame.h to use
the gdb::array_view abstraction.  I've converted the ones that used buffer +
length.

There are others using only the buffer, with an implicit size. I did not
touch those for now. But it would be nice to pass the size for safety.

Tested with --enable-targets=all on Ubuntu 18.04/20.04 aarch64-linux.

gdb/ChangeLog

2021-01-19  Luis Machado  <luis.machado@linaro.org>

	* frame.h (get_frame_register_bytes): Pass a gdb::array_view instead
	of buffer + length.
	(put_frame_register_bytes): Likewise.
	Adjust documentation.
	(get_frame_memory): Pass a gdb::array_view instead of buffer + length.
	(safe_frame_unwind_memory): Likewise.
	* frame.c (get_frame_register_bytes, put_frame_register_bytes)
	(get_frame_memory, safe_frame_unwind_memory): Adjust to use
	gdb::array_view.
	* amd64-fbsd-tdep.c (amd64fbsd_sigtramp_p): Likewise.
	* amd64-linux-tdep.c (amd64_linux_sigtramp_start): Likewise.
	* amd64-obsd-tdep.c (amd64obsd_sigtramp_p): Likewise.
	* arc-linux-tdep.c (arc_linux_is_sigtramp): Likewise.
	* cris-tdep.c (cris_sigtramp_start, cris_rt_sigtramp_start): Likewise.
	* dwarf2/loc.c (rw_pieced_value): Likewise.
	* hppa-tdep.c (hppa_frame_cache): Likewise.
	* i386-fbsd-tdep.c (i386fbsd_sigtramp_p): Likewise.
	* i386-gnu-tdep.c (i386_gnu_sigtramp_start): Likewise.
	* i386-linux-tdep.c (i386_linux_sigtramp_start)
	(i386_linux_rt_sigtramp_start): Likewise.
	* i386-obsd-tdep.c (i386obsd_sigtramp_p): Likewise.
	* i386-tdep.c (i386_register_to_value): Likewise.
	* i387-tdep.c (i387_register_to_value): Likewise.
	* ia64-tdep.c (ia64_register_to_value): Likewise.
	* m32r-linux-tdep.c (m32r_linux_sigtramp_start)
	(m32r_linux_rt_sigtramp_start): Likewise.
	* m68k-linux-tdep.c (m68k_linux_pc_in_sigtramp): Likewise.
	* m68k-tdep.c (m68k_register_to_value): Likewise.
	* mips-tdep.c (mips_register_to_value)
	(mips_value_to_register): Likewise.
	* ppc-fbsd-tdep.c (ppcfbsd_sigtramp_frame_sniffer)
	(ppcfbsd_sigtramp_frame_cache): Likewise.
	* ppc-obsd-tdep.c (ppcobsd_sigtramp_frame_sniffer)
	(ppcobsd_sigtramp_frame_cache): Likewise.
	* rs6000-tdep.c (rs6000_in_function_epilogue_frame_p)
	(rs6000_register_to_value): Likewise.
	* tilegx-tdep.c (tilegx_analyze_prologue): Likewise.
	* tramp-frame.c (tramp_frame_start): Likewise.
	* valops.c (value_assign): Likewise.

1 files changed, 5 insertions, 5 deletions

diff --git a/gdb/m32r-linux-tdep.c b/gdb/m32r-linux-tdep.c
index bed14ed..1d42a0a 100644
--- a/gdb/m32r-linux-tdep.c
+++ b/gdb/m32r-linux-tdep.c
@@ -99,7 +99,7 @@ m32r_linux_sigtramp_start (CORE_ADDR pc, struct frame_info *this_frame)
 
   if (pc % 2 != 0)
     {
-      if (!safe_frame_unwind_memory (this_frame, pc, buf, 2))
+      if (!safe_frame_unwind_memory (this_frame, pc, {buf, 2}))
 	return 0;
 
       if (memcmp (buf, linux_sigtramp_code, 2) == 0)
@@ -108,7 +108,7 @@ m32r_linux_sigtramp_start (CORE_ADDR pc, struct frame_info *this_frame)
 	return 0;
     }
 
-  if (!safe_frame_unwind_memory (this_frame, pc, buf, 4))
+  if (!safe_frame_unwind_memory (this_frame, pc, {buf, 4}))
     return 0;
 
   if (memcmp (buf, linux_sigtramp_code, 4) != 0)
@@ -148,12 +148,12 @@ m32r_linux_rt_sigtramp_start (CORE_ADDR pc, struct frame_info *this_frame)
   if (pc % 2 != 0)
     return 0;
 
-  if (!safe_frame_unwind_memory (this_frame, pc, buf, 4))
+  if (!safe_frame_unwind_memory (this_frame, pc, {buf, 4}))
     return 0;
 
   if (memcmp (buf, linux_rt_sigtramp_code, 4) == 0)
     {
-      if (!safe_frame_unwind_memory (this_frame, pc + 4, buf, 4))
+      if (!safe_frame_unwind_memory (this_frame, pc + 4, {buf, 4}))
 	return 0;
 
       if (memcmp (buf, linux_rt_sigtramp_code + 4, 4) == 0)
@@ -161,7 +161,7 @@ m32r_linux_rt_sigtramp_start (CORE_ADDR pc, struct frame_info *this_frame)
     }
   else if (memcmp (buf, linux_rt_sigtramp_code + 4, 4) == 0)
     {
-      if (!safe_frame_unwind_memory (this_frame, pc - 4, buf, 4))
+      if (!safe_frame_unwind_memory (this_frame, pc - 4, {buf, 4}))
 	return 0;
 
       if (memcmp (buf, linux_rt_sigtramp_code, 4) == 0)