From: Robert Walsh <rjwalsh@valgrind.org>
Date: Mon, 23 Aug 2004 18:15:12 +0000 (+0000)
Subject: Add explanatory comment.
X-Git-Tag: svn/VALGRIND_2_2_0~29
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd3e480bb377db861dacda35603ff1d36540defe;p=thirdparty%2Fvalgrind.git

Add explanatory comment.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2607
---

diff --git a/coregrind/vg_main.c b/coregrind/vg_main.c
index 10d50d11b0..0b28677bed 100644
--- a/coregrind/vg_main.c
+++ b/coregrind/vg_main.c
@@ -108,6 +108,11 @@ Addr VG_(shadow_base);	         /* tool's shadow memory */
 Addr VG_(shadow_end);
 
 Addr VG_(valgrind_base);	 /* valgrind's address range */
+
+// VG_(valgrind_end) has a slightly different meaning to all the other
+// VG_(*_end) vars -- ie. it names the last byte, whereas the others
+// go one byte past the end.
+
 Addr VG_(valgrind_end);
 
 vki_rlimit VG_(client_rlimit_data);
@@ -432,6 +437,11 @@ static void layout_remaining_space(Addr argc_addr, float ratio)
    addr_t client_size, shadow_size;
 
    VG_(valgrind_base)  = (addr_t)&kickstart_base;
+
+   // VG_(valgrind_end) has a slightly different meaning to all the other
+   // VG_(*_end) vars -- ie. it names the last byte, whereas the others
+   // go one byte past the end.
+
    VG_(valgrind_end)   = ROUNDUP(argc_addr, 0x10000) - 1; // stack
 
    // This gives the client the largest possible address space while