Your task, should you choose to accept it, is to make it cope with other
forms of relaxation where necessary.
And if not, please open a bug :-)
There are a few other missing cases that cause MC to produce code that
is more relaxed than it needs to be.
Cheers,
Rafael
On 20.02.2015 15:58, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
When experimenting with compiling GRUB2 with clang using integrated as,
I found out that it generates a 16-bit code bigger than gas counterpart
and result gets too big for size constraints of bootsector. This was
traced mainly
When experimenting with compiling GRUB2 with clang using integrated as,
I found out that it generates a 16-bit code bigger than gas counterpart
and result gets too big for size constraints of bootsector. This was
traced mainly to 2 problems.
32-bit access to 16-bit addresses.
source:
movl
On 30.01.15 at 18:54, daniel.ki...@oracle.com wrote:
--- a/xen/arch/x86/boot/Makefile
+++ b/xen/arch/x86/boot/Makefile
@@ -1,6 +1,7 @@
obj-bin-y += head.o
-RELOC_DEPS = $(BASEDIR)/include/asm-x86/config.h
$(BASEDIR)/include/xen/multiboot.h
+RELOC_DEPS =
On 30.01.15 at 18:54, daniel.ki...@oracle.com wrote:
We need more fine grained knowledge about EFI environment and check
for EFI platform and EFI loader separately to properly support
multiboot2 protocol.
... because of ... (i.e. I can't see from the description what the
separation is good
On 30.01.15 at 18:54, daniel.ki...@oracle.com wrote:
--- a/xen/arch/x86/shutdown.c
+++ b/xen/arch/x86/shutdown.c
@@ -504,7 +504,8 @@ void machine_restart(unsigned int delay_millisecs)
tboot_shutdown(TB_SHUTDOWN_REBOOT);
}
-efi_reset_system(reboot_mode != 0);
+if (
On Fri, 2015-02-20 at 16:05 +, David Woodhouse wrote:
It's been a while since I looked at this... but I think for the short
jumps we just emit the 8-bit version and there's a fixup which can go
back and re-emit the instruction in 32-bit mode if it finds it doesn't
fit?
Do we just need
On Fri, 2015-02-20 at 15:58 +0100, Vladimir 'φ-coder/phcoder' Serbinenko
wrote:
When experimenting with compiling GRUB2 with clang using integrated as,
I found out that it generates a 16-bit code bigger than gas counterpart
and result gets too big for size constraints of bootsector. This was
On Fri, 2015-02-20 at 16:46 +0100, Vladimir 'φ-coder/phcoder' Serbinenko
wrote:
All labels are local to the source file. If I use %eax instead of %ebx
in first example I get the short code. For the second example how does
clang detect that offset fits into one byte for issuing EB XX sequence
