RISC-V's .p2align (currently) ignores the max-skip argument. As we
have experimental patches underway to address this in a
backwards-compatible manner, let's prepare GCC for the day when
binutils gets updated.
gcc/ChangeLog:
* config/riscv/riscv.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Implement.
Signed-off-by: Philipp Tomsich <philipp.toms...@vrull.eu>
---
gcc/config/riscv/riscv.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
index 2d0d170645c..c216173cf6b 100644
--- a/gcc/config/riscv/riscv.h
+++ b/gcc/config/riscv/riscv.h
@@ -938,6 +938,24 @@ typedef struct {
fprintf (STREAM, "\t.word\t%sL%d-%sL%d\n", \
LOCAL_LABEL_PREFIX, VALUE, LOCAL_LABEL_PREFIX, REL)
+#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
+/* Support for -falign-* switches. Use .p2align to ensure that code
+ sections are padded with NOP instructions, rather than zeros. */
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
+ do \
+ { \
+ if ((LOG) != 0) \
+ { \
+ if ((MAX_SKIP) == 0) \
+ fprintf ((FILE), "\t.p2align %d\n", (int) (LOG)); \
+ else \
+ fprintf ((FILE), "\t.p2align %d,,%d\n", \
+ (int) (LOG), (int) (MAX_SKIP)); \
+ } \
+ } while (0)
+
+#endif /* HAVE_GAS_MAX_SKIP_P2ALIGN */
+
/* This is how to output an assembler line
that says to advance the location counter
to a multiple of 2**LOG bytes. */
--
2.34.1
