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* [gcc r13-13] gcov-tool: Support file input from stdin
@ 2022-04-28 19:41 Sebastian Huber
0 siblings, 0 replies; only message in thread
From: Sebastian Huber @ 2022-04-28 19:41 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:e543d9d2cf597773556ce0db2594335444eec304
commit r13-13-ge543d9d2cf597773556ce0db2594335444eec304
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Wed Mar 30 21:40:55 2022 +0200
gcov-tool: Support file input from stdin
gcc/
* gcov-io.cc (GCOV_MODE_STDIN): Define.
(gcov_position): For gcov-tool, return calculated position if file is
stdin.
(gcov_open): For gcov-tool, use stdin if filename is NULL.
(gcov_close): For gcov-tool, do not close stdin.
(gcov_read_bytes): For gcov-tool, update position if file is stdin.
(gcov_sync): For gcov-tool, discard input if file is stdin.
Diff:
---
gcc/gcov-io.cc | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/gcc/gcov-io.cc b/gcc/gcov-io.cc
index fee3130f94a..7e1fb10b612 100644
--- a/gcc/gcov-io.cc
+++ b/gcc/gcov-io.cc
@@ -35,8 +35,13 @@ struct gcov_var
int error; /* < 0 overflow, > 0 disk error. */
int mode; /* < 0 writing, > 0 reading. */
int endian; /* Swap endianness. */
+#ifdef IN_GCOV_TOOL
+ gcov_position_t pos; /* File position for stdin support. */
+#endif
} gcov_var;
+#define GCOV_MODE_STDIN 2
+
/* Save the current position in the gcov file. */
/* We need to expose this function when compiling for gcov-tool. */
#ifndef IN_GCOV_TOOL
@@ -45,6 +50,10 @@ static inline
gcov_position_t
gcov_position (void)
{
+#ifdef IN_GCOV_TOOL
+ if (gcov_var.mode == GCOV_MODE_STDIN)
+ return gcov_var.pos;
+#endif
return ftell (gcov_var.file);
}
@@ -108,6 +117,16 @@ gcov_open (const char *name, int mode)
#if !IN_LIBGCOV || defined (IN_GCOV_TOOL)
gcov_var.endian = 0;
#endif
+#ifdef IN_GCOV_TOOL
+ gcov_var.pos = 0;
+ if (!name)
+ {
+ gcov_nonruntime_assert (gcov_var.mode > 0);
+ gcov_var.file = stdin;
+ gcov_var.mode = GCOV_MODE_STDIN;
+ return 1;
+ }
+#endif
#if GCOV_LOCKED
if (mode > 0)
{
@@ -190,6 +209,11 @@ gcov_open (const char *name, int mode)
GCOV_LINKAGE int
gcov_close (void)
{
+#ifdef IN_GCOV_TOOL
+ if (gcov_var.file == stdin)
+ gcov_var.file = 0;
+ else
+#endif
if (gcov_var.file)
{
if (fclose (gcov_var.file))
@@ -363,6 +387,9 @@ gcov_read_bytes (void *buffer, unsigned count)
if (read != 1)
return NULL;
+#ifdef IN_GCOV_TOOL
+ gcov_var.pos += count;
+#endif
return buffer;
}
@@ -499,6 +526,17 @@ gcov_sync (gcov_position_t base, gcov_unsigned_t length)
{
gcov_nonruntime_assert (gcov_var.mode > 0);
base += length;
+#ifdef IN_GCOV_TOOL
+ if (gcov_var.mode == GCOV_MODE_STDIN)
+ {
+ while (gcov_var.pos < base)
+ {
+ ++gcov_var.pos;
+ (void)fgetc (gcov_var.file);
+ }
+ return;
+ }
+#endif
fseek (gcov_var.file, base, SEEK_SET);
}
#endif
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