Thread (11 messages) 11 messages, 3 authors, 2024-02-16

Re: [kvm-unit-tests PATCH v1 01/18] Makefile: Define __ASSEMBLY__ for assembly files

From: Andrew Jones <hidden>
Date: 2024-01-15 12:53:26
Also in: kvm, kvmarm

On Thu, Nov 30, 2023 at 04:07:03AM -0500, Shaoqin Huang wrote:
quoted hunk ↗ jump to hunk
From: Alexandru Elisei <redacted>

There are 25 header files today (found with grep -r "#ifndef __ASSEMBLY__)
with functionality relies on the __ASSEMBLY__ prepocessor constant being
correctly defined to work correctly. So far, kvm-unit-tests has relied on
the assembly files to define the constant before including any header
files which depend on it.

Let's make sure that nobody gets this wrong and define it as a compiler
constant when compiling assembly files. __ASSEMBLY__ is now defined for all
.S files, even those that didn't set it explicitely before.

Reviewed-by: Nikos Nikoleris <redacted>
Reviewed-by: Andrew Jones <redacted>
Signed-off-by: Alexandru Elisei <redacted>
Signed-off-by: Shaoqin Huang <redacted>
---
 Makefile           | 5 ++++-
 arm/cstart.S       | 1 -
 arm/cstart64.S     | 1 -
 powerpc/cstart64.S | 1 -
 4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/Makefile b/Makefile
index 602910dd..27ed14e6 100644
--- a/Makefile
+++ b/Makefile
@@ -92,6 +92,9 @@ CFLAGS += -Woverride-init -Wmissing-prototypes -Wstrict-prototypes
 
 autodepend-flags = -MMD -MP -MF $(dir $*).$(notdir $*).d
 
+AFLAGS  = $(CFLAGS)
+AFLAGS += -D__ASSEMBLY__
+
 LDFLAGS += -nostdlib $(no_pie) -z noexecstack
 
 $(libcflat): $(cflatobjs)
@@ -113,7 +116,7 @@ directories:
 	@mkdir -p $(OBJDIRS)
 
 %.o: %.S
-	$(CC) $(CFLAGS) -c -nostdlib -o $@ $<
+	$(CC) $(AFLAGS) -c -nostdlib -o $@ $<
I think we can drop the two hunks above from this patch and just rely on
the compiler to add __ASSEMBLY__ for us when compiling assembly files.

Thanks,
drew
quoted hunk ↗ jump to hunk
 
 -include */.*.d */*/.*.d
 
diff --git a/arm/cstart.S b/arm/cstart.S
index 3dd71ed9..b24ecabc 100644
--- a/arm/cstart.S
+++ b/arm/cstart.S
@@ -5,7 +5,6 @@
  *
  * This work is licensed under the terms of the GNU LGPL, version 2.
  */
-#define __ASSEMBLY__
 #include <auxinfo.h>
 #include <asm/assembler.h>
 #include <asm/thread_info.h>
diff --git a/arm/cstart64.S b/arm/cstart64.S
index bc2be45a..a8ad6dc8 100644
--- a/arm/cstart64.S
+++ b/arm/cstart64.S
@@ -5,7 +5,6 @@
  *
  * This work is licensed under the terms of the GNU GPL, version 2.
  */
-#define __ASSEMBLY__
 #include <auxinfo.h>
 #include <asm/asm-offsets.h>
 #include <asm/assembler.h>
diff --git a/powerpc/cstart64.S b/powerpc/cstart64.S
index 34e39341..fa32ef24 100644
--- a/powerpc/cstart64.S
+++ b/powerpc/cstart64.S
@@ -5,7 +5,6 @@
  *
  * This work is licensed under the terms of the GNU LGPL, version 2.
  */
-#define __ASSEMBLY__
 #include <asm/hcall.h>
 #include <asm/ppc_asm.h>
 #include <asm/rtas.h>
-- 
2.40.1
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