public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Add helper functions for parsing
@ 2021-06-15 17:16 William Schmidt
0 siblings, 0 replies; 6+ messages in thread
From: William Schmidt @ 2021-06-15 17:16 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:8d0988c6369218bd862410a7b0bf518a96576bd1
commit 8d0988c6369218bd862410a7b0bf518a96576bd1
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date: Mon Jun 7 11:41:37 2021 -0500
rs6000: Add helper functions for parsing
2021-06-07 Bill Schmidt <wschmidt@linux.ibm.com>
gcc/
* config/rs6000/rs6000-gen-builtins.c (consume_whitespace): New
function.
(advance_line): Likewise.
(safe_inc_pos): Likewise.
(match_identifier): Likewise.
(match_integer): Likewise.
(match_to_right_bracket): Likewise.
Diff:
---
gcc/config/rs6000/rs6000-gen-builtins.c | 111 ++++++++++++++++++++++++++++++++
1 file changed, 111 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-gen-builtins.c b/gcc/config/rs6000/rs6000-gen-builtins.c
index 3c53c3401b2..c5d5590e865 100644
--- a/gcc/config/rs6000/rs6000-gen-builtins.c
+++ b/gcc/config/rs6000/rs6000-gen-builtins.c
@@ -210,3 +210,114 @@ ovld_diag (const char * fmt, ...)
vfprintf (stderr, fmt, args);
va_end (args);
}
+
+/* Pass over unprintable characters and whitespace (other than a newline,
+ which terminates the scan). */
+static void
+consume_whitespace (void)
+{
+ while (pos < LINELEN && isspace(linebuf[pos]) && linebuf[pos] != '\n')
+ pos++;
+ return;
+}
+
+/* Get the next nonblank, noncomment line, returning 0 on EOF, 1 otherwise. */
+static int
+advance_line (FILE *file)
+{
+ while (1)
+ {
+ /* Read ahead one line and check for EOF. */
+ if (!fgets (linebuf, sizeof linebuf, file))
+ return 0;
+ line++;
+ size_t len = strlen (linebuf);
+ if (linebuf[len - 1] != '\n')
+ (*diag) ("line doesn't terminate with newline\n");
+ pos = 0;
+ consume_whitespace ();
+ if (linebuf[pos] != '\n' && linebuf[pos] != ';')
+ return 1;
+ }
+}
+
+static inline void
+safe_inc_pos (void)
+{
+ if (pos++ >= LINELEN)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (1);
+ }
+}
+
+/* Match an identifier, returning NULL on failure, else a pointer to a
+ buffer containing the identifier. */
+static char *
+match_identifier (void)
+{
+ int lastpos = pos - 1;
+ while (isalnum (linebuf[lastpos + 1]) || linebuf[lastpos + 1] == '_')
+ ++lastpos;
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
+
+/* Match an integer and return the string representing its value,
+ or a null string on failure. */
+static char *
+match_integer (void)
+{
+ int startpos = pos;
+ if (linebuf[pos] == '-')
+ safe_inc_pos ();
+
+ int lastpos = pos - 1;
+ while (isdigit (linebuf[lastpos + 1]))
+ ++lastpos;
+
+ if (lastpos < pos)
+ return NULL;
+
+ pos = lastpos + 1;
+ char *buf = (char *) malloc (lastpos - startpos + 2);
+ memcpy (buf, &linebuf[startpos], lastpos - startpos + 1);
+ buf[lastpos - startpos + 1] = '\0';
+ return buf;
+}
+
+/* Match a string up to but not including a ']', and return its value,
+ or zero if there is nothing before the ']'. Error if we don't find
+ such a character. */
+static const char *
+match_to_right_bracket (void)
+{
+ int lastpos = pos - 1;
+ while (linebuf[lastpos + 1] != ']')
+ {
+ if (linebuf[lastpos + 1] == '\n')
+ {
+ (*diag) ("no ']' found before end of line.\n");
+ exit (1);
+ }
+ ++lastpos;
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Add helper functions for parsing
@ 2021-06-25 16:15 William Schmidt
0 siblings, 0 replies; 6+ messages in thread
From: William Schmidt @ 2021-06-25 16:15 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:643ab7459789d98707031c6081e686608030c864
commit 643ab7459789d98707031c6081e686608030c864
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date: Mon Jun 7 11:41:37 2021 -0500
rs6000: Add helper functions for parsing
2021-06-07 Bill Schmidt <wschmidt@linux.ibm.com>
gcc/
* config/rs6000/rs6000-gen-builtins.c (consume_whitespace): New
function.
(advance_line): Likewise.
(safe_inc_pos): Likewise.
(match_identifier): Likewise.
(match_integer): Likewise.
(match_to_right_bracket): Likewise.
Diff:
---
gcc/config/rs6000/rs6000-gen-builtins.c | 111 ++++++++++++++++++++++++++++++++
1 file changed, 111 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-gen-builtins.c b/gcc/config/rs6000/rs6000-gen-builtins.c
index 3c53c3401b2..c5d5590e865 100644
--- a/gcc/config/rs6000/rs6000-gen-builtins.c
+++ b/gcc/config/rs6000/rs6000-gen-builtins.c
@@ -210,3 +210,114 @@ ovld_diag (const char * fmt, ...)
vfprintf (stderr, fmt, args);
va_end (args);
}
+
+/* Pass over unprintable characters and whitespace (other than a newline,
+ which terminates the scan). */
+static void
+consume_whitespace (void)
+{
+ while (pos < LINELEN && isspace(linebuf[pos]) && linebuf[pos] != '\n')
+ pos++;
+ return;
+}
+
+/* Get the next nonblank, noncomment line, returning 0 on EOF, 1 otherwise. */
+static int
+advance_line (FILE *file)
+{
+ while (1)
+ {
+ /* Read ahead one line and check for EOF. */
+ if (!fgets (linebuf, sizeof linebuf, file))
+ return 0;
+ line++;
+ size_t len = strlen (linebuf);
+ if (linebuf[len - 1] != '\n')
+ (*diag) ("line doesn't terminate with newline\n");
+ pos = 0;
+ consume_whitespace ();
+ if (linebuf[pos] != '\n' && linebuf[pos] != ';')
+ return 1;
+ }
+}
+
+static inline void
+safe_inc_pos (void)
+{
+ if (pos++ >= LINELEN)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (1);
+ }
+}
+
+/* Match an identifier, returning NULL on failure, else a pointer to a
+ buffer containing the identifier. */
+static char *
+match_identifier (void)
+{
+ int lastpos = pos - 1;
+ while (isalnum (linebuf[lastpos + 1]) || linebuf[lastpos + 1] == '_')
+ ++lastpos;
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
+
+/* Match an integer and return the string representing its value,
+ or a null string on failure. */
+static char *
+match_integer (void)
+{
+ int startpos = pos;
+ if (linebuf[pos] == '-')
+ safe_inc_pos ();
+
+ int lastpos = pos - 1;
+ while (isdigit (linebuf[lastpos + 1]))
+ ++lastpos;
+
+ if (lastpos < pos)
+ return NULL;
+
+ pos = lastpos + 1;
+ char *buf = (char *) malloc (lastpos - startpos + 2);
+ memcpy (buf, &linebuf[startpos], lastpos - startpos + 1);
+ buf[lastpos - startpos + 1] = '\0';
+ return buf;
+}
+
+/* Match a string up to but not including a ']', and return its value,
+ or zero if there is nothing before the ']'. Error if we don't find
+ such a character. */
+static const char *
+match_to_right_bracket (void)
+{
+ int lastpos = pos - 1;
+ while (linebuf[lastpos + 1] != ']')
+ {
+ if (linebuf[lastpos + 1] == '\n')
+ {
+ (*diag) ("no ']' found before end of line.\n");
+ exit (1);
+ }
+ ++lastpos;
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Add helper functions for parsing
@ 2021-04-26 20:48 William Schmidt
0 siblings, 0 replies; 6+ messages in thread
From: William Schmidt @ 2021-04-26 20:48 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:339c02294ee06570958bc71c772f33736a103fa9
commit 339c02294ee06570958bc71c772f33736a103fa9
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date: Wed Mar 3 12:46:38 2021 -0600
rs6000: Add helper functions for parsing
2021-03-03 Bill Schmidt <wschmidt@linux.ibm.com>
gcc/
* config/rs6000/rs6000-gen-builtins.c (MININT): New defined
constant.
(exit_codes): New enum.
(consume_whitespace): New function.
(advance_line): Likewise.
(safe_inc_pos): Likewise.
(match_identifier): Likewise.
(match_integer): Likewise.
(match_to_right_bracket): Likewise.
Diff:
---
gcc/config/rs6000/rs6000-gen-builtins.c | 121 ++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-gen-builtins.c b/gcc/config/rs6000/rs6000-gen-builtins.c
index 0e8b315208b..f3e1d31c225 100644
--- a/gcc/config/rs6000/rs6000-gen-builtins.c
+++ b/gcc/config/rs6000/rs6000-gen-builtins.c
@@ -164,6 +164,10 @@ along with GCC; see the file COPYING3. If not see
#include <assert.h>
#include <unistd.h>
+/* Used as a sentinel for range constraints on integer fields. No field can
+ be 32 bits wide, so this is a safe sentinel value. */
+#define MININT INT32_MIN
+
/* Input and output file descriptors and pathnames. */
static FILE *bif_file;
static FILE *ovld_file;
@@ -186,6 +190,11 @@ static char linebuf[LINELEN];
static int line;
static int pos;
+/* Exit codes for the shell. */
+enum exit_codes {
+ EC_INTERR
+};
+
/* Pointer to a diagnostic function. */
void (*diag) (const char *, ...) __attribute__ ((format (printf, 1, 2)))
= NULL;
@@ -210,3 +219,115 @@ ovld_diag (const char * fmt, ...)
vfprintf (stderr, fmt, args);
va_end (args);
}
+
+/* Pass over unprintable characters and whitespace (other than a newline,
+ which terminates the scan). */
+static void
+consume_whitespace ()
+{
+ while (pos < LINELEN && isspace(linebuf[pos]) && linebuf[pos] != '\n')
+ pos++;
+ return;
+}
+
+/* Get the next nonblank, noncomment line, returning 0 on EOF, 1 otherwise. */
+static int
+advance_line (FILE *file)
+{
+ while (1)
+ {
+ /* Read ahead one line and check for EOF. */
+ if (!fgets (linebuf, sizeof(linebuf), file))
+ return 0;
+ line++;
+ pos = 0;
+ consume_whitespace ();
+ if (linebuf[pos] != '\n' && linebuf[pos] != ';')
+ return 1;
+ }
+}
+
+static inline void
+safe_inc_pos ()
+{
+ if (pos++ >= LINELEN)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+}
+
+/* Match an identifier, returning NULL on failure, else a pointer to a
+ buffer containing the identifier. */
+static char *
+match_identifier ()
+{
+ int lastpos = pos - 1;
+ while (isalnum (linebuf[lastpos + 1]) || linebuf[lastpos + 1] == '_')
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
+
+/* Match an integer and return its value, or MININT on failure. */
+static int
+match_integer ()
+{
+ int startpos = pos;
+ if (linebuf[pos] == '-')
+ safe_inc_pos ();
+
+ int lastpos = pos - 1;
+ while (isdigit (linebuf[lastpos + 1]))
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun in match_integer.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return MININT;
+
+ pos = lastpos + 1;
+ char *buf = (char *) malloc (lastpos - startpos + 2);
+ memcpy (buf, &linebuf[startpos], lastpos - startpos + 1);
+ buf[lastpos - startpos + 1] = '\0';
+
+ int x;
+ sscanf (buf, "%d", &x);
+ return x;
+}
+
+static const char *
+match_to_right_bracket ()
+{
+ int lastpos = pos - 1;
+ while (linebuf[lastpos + 1] != ']')
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Add helper functions for parsing
@ 2021-04-02 22:09 William Schmidt
0 siblings, 0 replies; 6+ messages in thread
From: William Schmidt @ 2021-04-02 22:09 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:80cde440aef3021245072e412a0b91b6d7a8e6b4
commit 80cde440aef3021245072e412a0b91b6d7a8e6b4
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date: Wed Mar 3 12:46:38 2021 -0600
rs6000: Add helper functions for parsing
2021-03-03 Bill Schmidt <wschmidt@linux.ibm.com>
gcc/
* config/rs6000/rs6000-gen-builtins.c (MININT): New defined
constant.
(exit_codes): New enum.
(consume_whitespace): New function.
(advance_line): Likewise.
(safe_inc_pos): Likewise.
(match_identifier): Likewise.
(match_integer): Likewise.
(match_to_right_bracket): Likewise.
Diff:
---
gcc/config/rs6000/rs6000-gen-builtins.c | 121 ++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-gen-builtins.c b/gcc/config/rs6000/rs6000-gen-builtins.c
index 0e8b315208b..f3e1d31c225 100644
--- a/gcc/config/rs6000/rs6000-gen-builtins.c
+++ b/gcc/config/rs6000/rs6000-gen-builtins.c
@@ -164,6 +164,10 @@ along with GCC; see the file COPYING3. If not see
#include <assert.h>
#include <unistd.h>
+/* Used as a sentinel for range constraints on integer fields. No field can
+ be 32 bits wide, so this is a safe sentinel value. */
+#define MININT INT32_MIN
+
/* Input and output file descriptors and pathnames. */
static FILE *bif_file;
static FILE *ovld_file;
@@ -186,6 +190,11 @@ static char linebuf[LINELEN];
static int line;
static int pos;
+/* Exit codes for the shell. */
+enum exit_codes {
+ EC_INTERR
+};
+
/* Pointer to a diagnostic function. */
void (*diag) (const char *, ...) __attribute__ ((format (printf, 1, 2)))
= NULL;
@@ -210,3 +219,115 @@ ovld_diag (const char * fmt, ...)
vfprintf (stderr, fmt, args);
va_end (args);
}
+
+/* Pass over unprintable characters and whitespace (other than a newline,
+ which terminates the scan). */
+static void
+consume_whitespace ()
+{
+ while (pos < LINELEN && isspace(linebuf[pos]) && linebuf[pos] != '\n')
+ pos++;
+ return;
+}
+
+/* Get the next nonblank, noncomment line, returning 0 on EOF, 1 otherwise. */
+static int
+advance_line (FILE *file)
+{
+ while (1)
+ {
+ /* Read ahead one line and check for EOF. */
+ if (!fgets (linebuf, sizeof(linebuf), file))
+ return 0;
+ line++;
+ pos = 0;
+ consume_whitespace ();
+ if (linebuf[pos] != '\n' && linebuf[pos] != ';')
+ return 1;
+ }
+}
+
+static inline void
+safe_inc_pos ()
+{
+ if (pos++ >= LINELEN)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+}
+
+/* Match an identifier, returning NULL on failure, else a pointer to a
+ buffer containing the identifier. */
+static char *
+match_identifier ()
+{
+ int lastpos = pos - 1;
+ while (isalnum (linebuf[lastpos + 1]) || linebuf[lastpos + 1] == '_')
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
+
+/* Match an integer and return its value, or MININT on failure. */
+static int
+match_integer ()
+{
+ int startpos = pos;
+ if (linebuf[pos] == '-')
+ safe_inc_pos ();
+
+ int lastpos = pos - 1;
+ while (isdigit (linebuf[lastpos + 1]))
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun in match_integer.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return MININT;
+
+ pos = lastpos + 1;
+ char *buf = (char *) malloc (lastpos - startpos + 2);
+ memcpy (buf, &linebuf[startpos], lastpos - startpos + 1);
+ buf[lastpos - startpos + 1] = '\0';
+
+ int x;
+ sscanf (buf, "%d", &x);
+ return x;
+}
+
+static const char *
+match_to_right_bracket ()
+{
+ int lastpos = pos - 1;
+ while (linebuf[lastpos + 1] != ']')
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Add helper functions for parsing
@ 2021-04-01 19:47 William Schmidt
0 siblings, 0 replies; 6+ messages in thread
From: William Schmidt @ 2021-04-01 19:47 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:42cb5b7fe07e9ef066a7b27f8fa6b8210e9a648c
commit 42cb5b7fe07e9ef066a7b27f8fa6b8210e9a648c
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date: Wed Mar 3 12:46:38 2021 -0600
rs6000: Add helper functions for parsing
2021-03-03 Bill Schmidt <wschmidt@linux.ibm.com>
gcc/
* config/rs6000/rs6000-gen-builtins.c (MININT): New defined
constant.
(exit_codes): New enum.
(consume_whitespace): New function.
(advance_line): Likewise.
(safe_inc_pos): Likewise.
(match_identifier): Likewise.
(match_integer): Likewise.
(match_to_right_bracket): Likewise.
Diff:
---
gcc/config/rs6000/rs6000-gen-builtins.c | 121 ++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-gen-builtins.c b/gcc/config/rs6000/rs6000-gen-builtins.c
index 32bb231f2e3..136d6911760 100644
--- a/gcc/config/rs6000/rs6000-gen-builtins.c
+++ b/gcc/config/rs6000/rs6000-gen-builtins.c
@@ -163,6 +163,10 @@ along with GCC; see the file COPYING3. If not see
#include <assert.h>
#include <unistd.h>
+/* Used as a sentinel for range constraints on integer fields. No field can
+ be 32 bits wide, so this is a safe sentinel value. */
+#define MININT INT32_MIN
+
/* Input and output file descriptors and pathnames. */
static FILE *bif_file;
static FILE *ovld_file;
@@ -185,6 +189,11 @@ static char linebuf[LINELEN];
static int line;
static int pos;
+/* Exit codes for the shell. */
+enum exit_codes {
+ EC_INTERR
+};
+
/* Pointer to a diagnostic function. */
void (*diag) (const char *, ...) __attribute__ ((format (printf, 1, 2)))
= NULL;
@@ -209,3 +218,115 @@ ovld_diag (const char * fmt, ...)
vfprintf (stderr, fmt, args);
va_end (args);
}
+
+/* Pass over unprintable characters and whitespace (other than a newline,
+ which terminates the scan). */
+static void
+consume_whitespace ()
+{
+ while (pos < LINELEN && isspace(linebuf[pos]) && linebuf[pos] != '\n')
+ pos++;
+ return;
+}
+
+/* Get the next nonblank, noncomment line, returning 0 on EOF, 1 otherwise. */
+static int
+advance_line (FILE *file)
+{
+ while (1)
+ {
+ /* Read ahead one line and check for EOF. */
+ if (!fgets (linebuf, sizeof(linebuf), file))
+ return 0;
+ line++;
+ pos = 0;
+ consume_whitespace ();
+ if (linebuf[pos] != '\n' && linebuf[pos] != ';')
+ return 1;
+ }
+}
+
+static inline void
+safe_inc_pos ()
+{
+ if (pos++ >= LINELEN)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+}
+
+/* Match an identifier, returning NULL on failure, else a pointer to a
+ buffer containing the identifier. */
+static char *
+match_identifier ()
+{
+ int lastpos = pos - 1;
+ while (isalnum (linebuf[lastpos + 1]) || linebuf[lastpos + 1] == '_')
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
+
+/* Match an integer and return its value, or MININT on failure. */
+static int
+match_integer ()
+{
+ int startpos = pos;
+ if (linebuf[pos] == '-')
+ safe_inc_pos ();
+
+ int lastpos = pos - 1;
+ while (isdigit (linebuf[lastpos + 1]))
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun in match_integer.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return MININT;
+
+ pos = lastpos + 1;
+ char *buf = (char *) malloc (lastpos - startpos + 2);
+ memcpy (buf, &linebuf[startpos], lastpos - startpos + 1);
+ buf[lastpos - startpos + 1] = '\0';
+
+ int x;
+ sscanf (buf, "%d", &x);
+ return x;
+}
+
+static const char *
+match_to_right_bracket ()
+{
+ int lastpos = pos - 1;
+ while (linebuf[lastpos + 1] != ']')
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Add helper functions for parsing
@ 2021-03-25 15:44 William Schmidt
0 siblings, 0 replies; 6+ messages in thread
From: William Schmidt @ 2021-03-25 15:44 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:f6208350ca9325068d3fca9518d385a5459da580
commit f6208350ca9325068d3fca9518d385a5459da580
Author: Bill Schmidt <wschmidt@linux.ibm.com>
Date: Wed Mar 3 12:46:38 2021 -0600
rs6000: Add helper functions for parsing
2021-03-03 Bill Schmidt <wschmidt@linux.ibm.com>
gcc/
* config/rs6000/rs6000-gen-builtins.c (MININT): New defined
constant.
(exit_codes): New enum.
(consume_whitespace): New function.
(advance_line): Likewise.
(safe_inc_pos): Likewise.
(match_identifier): Likewise.
(match_integer): Likewise.
(match_to_right_bracket): Likewise.
Diff:
---
gcc/config/rs6000/rs6000-gen-builtins.c | 121 ++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-gen-builtins.c b/gcc/config/rs6000/rs6000-gen-builtins.c
index 32bb231f2e3..136d6911760 100644
--- a/gcc/config/rs6000/rs6000-gen-builtins.c
+++ b/gcc/config/rs6000/rs6000-gen-builtins.c
@@ -163,6 +163,10 @@ along with GCC; see the file COPYING3. If not see
#include <assert.h>
#include <unistd.h>
+/* Used as a sentinel for range constraints on integer fields. No field can
+ be 32 bits wide, so this is a safe sentinel value. */
+#define MININT INT32_MIN
+
/* Input and output file descriptors and pathnames. */
static FILE *bif_file;
static FILE *ovld_file;
@@ -185,6 +189,11 @@ static char linebuf[LINELEN];
static int line;
static int pos;
+/* Exit codes for the shell. */
+enum exit_codes {
+ EC_INTERR
+};
+
/* Pointer to a diagnostic function. */
void (*diag) (const char *, ...) __attribute__ ((format (printf, 1, 2)))
= NULL;
@@ -209,3 +218,115 @@ ovld_diag (const char * fmt, ...)
vfprintf (stderr, fmt, args);
va_end (args);
}
+
+/* Pass over unprintable characters and whitespace (other than a newline,
+ which terminates the scan). */
+static void
+consume_whitespace ()
+{
+ while (pos < LINELEN && isspace(linebuf[pos]) && linebuf[pos] != '\n')
+ pos++;
+ return;
+}
+
+/* Get the next nonblank, noncomment line, returning 0 on EOF, 1 otherwise. */
+static int
+advance_line (FILE *file)
+{
+ while (1)
+ {
+ /* Read ahead one line and check for EOF. */
+ if (!fgets (linebuf, sizeof(linebuf), file))
+ return 0;
+ line++;
+ pos = 0;
+ consume_whitespace ();
+ if (linebuf[pos] != '\n' && linebuf[pos] != ';')
+ return 1;
+ }
+}
+
+static inline void
+safe_inc_pos ()
+{
+ if (pos++ >= LINELEN)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+}
+
+/* Match an identifier, returning NULL on failure, else a pointer to a
+ buffer containing the identifier. */
+static char *
+match_identifier ()
+{
+ int lastpos = pos - 1;
+ while (isalnum (linebuf[lastpos + 1]) || linebuf[lastpos + 1] == '_')
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
+
+/* Match an integer and return its value, or MININT on failure. */
+static int
+match_integer ()
+{
+ int startpos = pos;
+ if (linebuf[pos] == '-')
+ safe_inc_pos ();
+
+ int lastpos = pos - 1;
+ while (isdigit (linebuf[lastpos + 1]))
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun in match_integer.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return MININT;
+
+ pos = lastpos + 1;
+ char *buf = (char *) malloc (lastpos - startpos + 2);
+ memcpy (buf, &linebuf[startpos], lastpos - startpos + 1);
+ buf[lastpos - startpos + 1] = '\0';
+
+ int x;
+ sscanf (buf, "%d", &x);
+ return x;
+}
+
+static const char *
+match_to_right_bracket ()
+{
+ int lastpos = pos - 1;
+ while (linebuf[lastpos + 1] != ']')
+ if (++lastpos >= LINELEN - 1)
+ {
+ (*diag) ("line length overrun.\n");
+ exit (EC_INTERR);
+ }
+
+ if (lastpos < pos)
+ return 0;
+
+ char *buf = (char *) malloc (lastpos - pos + 2);
+ memcpy (buf, &linebuf[pos], lastpos - pos + 1);
+ buf[lastpos - pos + 1] = '\0';
+
+ pos = lastpos + 1;
+ return buf;
+}
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-06-25 16:15 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-06-15 17:16 [gcc(refs/users/wschmidt/heads/builtins10)] rs6000: Add helper functions for parsing William Schmidt
-- strict thread matches above, loose matches on Subject: below --
2021-06-25 16:15 William Schmidt
2021-04-26 20:48 William Schmidt
2021-04-02 22:09 William Schmidt
2021-04-01 19:47 William Schmidt
2021-03-25 15:44 William Schmidt
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).