wingo pushed a commit to branch lightning
in repository guile.
commit 066db584c9e3d0b367ea94401373072735335fa2
Author: pcpa <[email protected]>
Date: Mon Apr 8 18:00:36 2013 -0300
Ensure the end argument of __clear_cache is page aligned.
* lib/jit_arm.c, lib/jit_ppc.c: Do not rely on __clear_cache
aligning to the next page boundary the end argument. It may
actually truncate it.
---
ChangeLog | 6 ++++++
lib/jit_arm.c | 3 ++-
lib/jit_ppc.c | 3 ++-
3 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index a174e64..fe265f9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2013-04-08 Paulo Andrade <[email protected]>
+
+ * lib/jit_arm.c, lib/jit_ppc.c: Do not rely on __clear_cache
+ aligning to the next page boundary the end argument. It may
+ actually truncate it.
+
2013-03-29 Paulo Andrade <[email protected]>
* include/lightning/jit_private.h, lib/jit_arm.c, lib/jit_memory.c,
diff --git a/lib/jit_arm.c b/lib/jit_arm.c
index c4fe59e..07223e5 100644
--- a/lib/jit_arm.c
+++ b/lib/jit_arm.c
@@ -1563,7 +1563,8 @@ _emit_code(jit_state_t *_jit)
patch_at(_jitc->patches.ptr[offset].kind & ~arm_patch_node, word,
value);
}
- __clear_cache(_jit->code.ptr, _jit->pc.uc);
+ word = sysconf(_SC_PAGE_SIZE);
+ __clear_cache(_jit->code.ptr, (void *)((_jit->pc.w + word) & -word));
return (_jit->code.ptr);
}
diff --git a/lib/jit_ppc.c b/lib/jit_ppc.c
index a09b24f..1f1c6b4 100644
--- a/lib/jit_ppc.c
+++ b/lib/jit_ppc.c
@@ -1346,7 +1346,8 @@ _emit_code(jit_state_t *_jit)
patch_at(_jitc->patches.ptr[offset].inst, word);
}
- __clear_cache(_jit->code.ptr, _jit->pc.uc);
+ word = sysconf(_SC_PAGE_SIZE);
+ __clear_cache(_jit->code.ptr, (void *)((_jit->pc.w + word) & -word));
return (_jit->code.ptr);
}
