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* [binutils-gdb] Introduce value_print_scalar_formatted
@ 2020-03-14 0:05 Tom Tromey
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From: Tom Tromey @ 2020-03-14 0:05 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4f9ae810130bc4202ec1c5eae934900c542a9016
commit 4f9ae810130bc4202ec1c5eae934900c542a9016
Author: Tom Tromey <tom@tromey.com>
Date: Fri Mar 13 17:39:52 2020 -0600
Introduce value_print_scalar_formatted
This introduces a value_print_scalar_formatted, which is an analogue
of val_print_scalar_formatted that uses the value API.
gdb/ChangeLog
2020-03-13 Tom Tromey <tom@tromey.com>
* valprint.h (value_print_scalar_formatted): Declare.
* valprint.c (value_print_scalar_formatted): New function.
Diff:
---
gdb/ChangeLog | 5 +++++
gdb/valprint.c | 40 ++++++++++++++++++++++++++++++++++++++++
gdb/valprint.h | 10 ++++++++++
3 files changed, 55 insertions(+)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 48572cb4d2a..264565edf19 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-13 Tom Tromey <tom@tromey.com>
+
+ * valprint.h (value_print_scalar_formatted): Declare.
+ * valprint.c (value_print_scalar_formatted): New function.
+
2020-03-13 Tom Tromey <tom@tromey.com>
* valprint.h (generic_value_print): Declare.
diff --git a/gdb/valprint.c b/gdb/valprint.c
index 7b0365a3ba8..9cdf18ee864 100644
--- a/gdb/valprint.c
+++ b/gdb/valprint.c
@@ -1394,6 +1394,46 @@ val_print_scalar_formatted (struct type *type,
options, size, stream);
}
+/* See valprint.h. */
+
+void
+value_print_scalar_formatted (struct value *val,
+ const struct value_print_options *options,
+ int size,
+ struct ui_file *stream)
+{
+ struct type *type = check_typedef (value_type (val));
+
+ gdb_assert (val != NULL);
+
+ /* If we get here with a string format, try again without it. Go
+ all the way back to the language printers, which may call us
+ again. */
+ if (options->format == 's')
+ {
+ struct value_print_options opts = *options;
+ opts.format = 0;
+ opts.deref_ref = 0;
+ common_val_print (val, stream, 0, &opts, current_language);
+ return;
+ }
+
+ /* value_contents_for_printing fetches all VAL's contents. They are
+ needed to check whether VAL is optimized-out or unavailable
+ below. */
+ const gdb_byte *valaddr = value_contents_for_printing (val);
+
+ /* A scalar object that does not have all bits available can't be
+ printed, because all bits contribute to its representation. */
+ if (value_bits_any_optimized_out (val, 0,
+ TARGET_CHAR_BIT * TYPE_LENGTH (type)))
+ val_print_optimized_out (val, stream);
+ else if (!value_bytes_available (val, 0, TYPE_LENGTH (type)))
+ val_print_unavailable (stream);
+ else
+ print_scalar_formatted (valaddr, type, options, size, stream);
+}
+
/* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
The raison d'etre of this function is to consolidate printing of
LONG_LONG's into this one function. The format chars b,h,w,g are
diff --git a/gdb/valprint.h b/gdb/valprint.h
index 1aca29463f4..90df12dbd7e 100644
--- a/gdb/valprint.h
+++ b/gdb/valprint.h
@@ -141,6 +141,16 @@ extern void val_print_scalar_formatted (struct type *,
int,
struct ui_file *);
+/* Print a scalar according to OPTIONS and SIZE on STREAM. Format 'i'
+ is not supported at this level.
+
+ This is how the elements of an array or structure are printed
+ with a format. */
+
+extern void value_print_scalar_formatted
+ (struct value *val, const struct value_print_options *options,
+ int size, struct ui_file *stream);
+
extern void print_binary_chars (struct ui_file *, const gdb_byte *,
unsigned int, enum bfd_endian, bool);
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