/*-
- * Copyright (c) 1991 The Regents of the University of California.
+ * Copyright (c) 1991, 2001 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*
* @(#)gmon.h 5.2 (Berkeley) 5/6/91
*/
+#ifndef gmon_h
+#define gmon_h
-struct phdr {
- char *lpc;
- char *hpc;
- int ncnt;
-};
+/* Size of the 4.4BSD gmon header */
+#define GMON_HDRSIZE_BSD44_32 (4 + 4 + 4 + 4 + 4 + (3 * 4))
+#define GMON_HDRSIZE_BSD44_64 (8 + 8 + 4 + 4 + 4 + (3 * 4))
- /*
- * histogram counters are unsigned shorts (according to the kernel).
- */
-#define HISTCOUNTER unsigned short
+#if 0 /* For documentation purposes only. */
+ struct raw_phdr
+ {
+ char low_pc[sizeof(void *)]; /* base pc address of sample buffer */
+ char high_pc[sizeof(void *)];/* max pc address of sampled buffer */
+ char ncnt[4]; /* size of sample buffer (plus this
+ header) */
- /*
- * fraction of text space to allocate for histogram counters
- * here, 1/2
- */
+ char version[4]; /* version number */
+ char profrate[4]; /* profiling clock rate */
+ char spare[3*4]; /* reserved */
+ };
+#endif
+
+#define GMONVERSION 0x00051879
+
+/* Size of the old BSD gmon header */
+#define GMON_HDRSIZE_OLDBSD_32 (4 + 4 + 4)
+
+/* FIXME: Checking host compiler defines here means that we can't
+ use a cross gprof alpha OSF. */
+#if defined(__alpha__) && defined (__osf__)
+#define GMON_HDRSIZE_OLDBSD_64 (8 + 8 + 4 + 4)
+#else
+#define GMON_HDRSIZE_OLDBSD_64 (8 + 8 + 4)
+#endif
+
+#if 0 /* For documentation purposes only. */
+ struct old_raw_phdr
+ {
+ char low_pc[sizeof(void *)]; /* base pc address of sample buffer */
+ char high_pc[sizeof(void *)];/* max pc address of sampled buffer */
+ char ncnt[4]; /* size of sample buffer (plus this
+ header) */
+#if defined (__alpha__) && defined (__osf__)
+ /*
+ * DEC's OSF v3.0 uses 4 bytes of padding to bring the header to
+ * a size that is a multiple of 8.
+ */
+ char pad[4];
+#endif
+ };
+#endif
+
+/*
+ * Histogram counters are unsigned shorts:
+ */
+#define HISTCOUNTER unsigned short
+
+/*
+ * Fraction of text space to allocate for histogram counters here, 1/2:
+ */
#define HISTFRACTION 2
- /*
- * Fraction of text space to allocate for from hash buckets.
- * The value of HASHFRACTION is based on the minimum number of bytes
- * of separation between two subroutine call points in the object code.
- * Given MIN_SUBR_SEPARATION bytes of separation the value of
- * HASHFRACTION is calculated as:
- *
- * HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
- *
- * For the VAX, the shortest two call sequence is:
- *
- * calls $0,(r0)
- * calls $0,(r0)
- *
- * which is separated by only three bytes, thus HASHFRACTION is
- * calculated as:
- *
- * HASHFRACTION = 3 / (2 * 2 - 1) = 1
- *
- * Note that the division above rounds down, thus if MIN_SUBR_FRACTION
- * is less than three, this algorithm will not work!
- */
-#define HASHFRACTION 1
+/*
+ * Fraction of text space to allocate for from hash buckets. The
+ * value of HASHFRACTION is based on the minimum number of bytes of
+ * separation between two subroutine call points in the object code.
+ * Given MIN_SUBR_SEPARATION bytes of separation the value of
+ * HASHFRACTION is calculated as:
+ *
+ * HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
+ *
+ * For the VAX, the shortest two call sequence is:
+ *
+ * calls $0,(r0)
+ * calls $0,(r0)
+ *
+ * which is separated by only three bytes, thus HASHFRACTION is
+ * calculated as:
+ *
+ * HASHFRACTION = 3 / (2 * 2 - 1) = 1
+ *
+ * Note that the division above rounds down, thus if MIN_SUBR_FRACTION
+ * is less than three, this algorithm will not work!
+ */
+#define HASHFRACTION 1
- /*
- * percent of text space to allocate for tostructs
- * with a minimum.
- */
+/*
+ * Percent of text space to allocate for tostructs with a minimum:
+ */
#define ARCDENSITY 2
#define MINARCS 50
-struct tostruct {
- char *selfpc;
- long count;
- unsigned short link;
-};
-
- /*
- * a raw arc,
- * with pointers to the calling site and the called site
- * and a count.
- */
-struct rawarc {
- unsigned long raw_frompc;
- unsigned long raw_selfpc;
- long raw_count;
-};
+struct tostruct
+ {
+ char *selfpc;
+ int count;
+ unsigned short link;
+ };
-struct veryrawarc {
- char raw_frompc[4];
- char raw_selfpc[4];
- char raw_count[4];
-};
+/*
+ * A raw arc, with pointers to the calling site and the called site
+ * and a count. Everything is defined in terms of characters so
+ * as to get a packed representation (otherwise, different compilers
+ * might introduce different padding):
+ */
+#if 0 /* For documentation purposes only. */
+ struct raw_arc
+ {
+ char from_pc[sizeof(void *)];
+ char self_pc[sizeof(void *)];
+ char count[sizeof(long)];
+ };
+#endif
- /*
- * general rounding functions.
- */
+/*
+ * General rounding functions:
+ */
#define ROUNDDOWN(x,y) (((x)/(y))*(y))
#define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
+
+#endif /* gmon_h */
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