git: 5c505b9d8166 - stable/13 - stand: i386/amd64: Always use elf format for /boot/loader and pxeldr

From: Warner Losh <>
Date: Tue, 24 Jan 2023 22:11:48 UTC
The branch stable/13 has been updated by imp:


commit 5c505b9d8166d997015d3e841846b5222375a1e7
Author:     Warner Losh <>
AuthorDate: 2022-08-11 03:18:32 +0000
Commit:     Warner Losh <>
CommitDate: 2023-01-24 21:49:29 +0000

    stand: i386/amd64: Always use elf format for /boot/loader and pxeldr
    The first level boot blocks have understood how to load ELF code since
    1999. Switch /boot/loader and /boot/pxeldr over to being ELF format so
    that in-tree tools can examine them more closely. In addition, one
    could, in theory, now have a 'lo-mem' and a 'hi-mem' segment (though a
    lot of work would need to be done with bounce buffers, btx, code segment
    marking, etc for an arrangement like that to work).
    As far as I can tell, this is the last a.out binary in the tree. There
    are several raw binaries left, but everything else is ELF.
    Reviewed by:            emaste, kevans
    Sponsored by:           Netflix
    Differential Revision:
    (cherry picked from commit e2295b9117233d8248fe919c6b28ef1d44a8950d)
 stand/i386/loader/Makefile | 2 +-
 stand/i386/pxeldr/Makefile | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/stand/i386/loader/Makefile b/stand/i386/loader/Makefile
index 571e3b2cb653..3685281ffd2c 100644
--- a/stand/i386/loader/Makefile
+++ b/stand/i386/loader/Makefile
@@ -80,7 +80,7 @@ CFLAGS+=	-I${BOOTSRC}/i386
 	vtfontcvt -f compressed-source -o ${.TARGET} ${.ALLSRC}
-	btxld -v -f aout -e ${LOADER_ADDRESS} -o ${.TARGET} -l ${BTXLDR} \
+	btxld -v -f elf -e ${LOADER_ADDRESS} -o ${.TARGET} -l ${BTXLDR} \
 		-b ${BTXKERN} ${LOADER}.bin
 ${LOADER}.bin: ${LOADER}.sym
diff --git a/stand/i386/pxeldr/Makefile b/stand/i386/pxeldr/Makefile
index 2184d391937f..a44dc0de2885 100644
--- a/stand/i386/pxeldr/Makefile
+++ b/stand/i386/pxeldr/Makefile
@@ -39,7 +39,7 @@ LDFLAGS+=${LDFLAGS_BIN}
-	btxld -v -f aout -e ${LOADER_ADDRESS} -o ${.TARGET} -l ${BTXLDR} \
+	btxld -v -f elf -e ${LOADER_ADDRESS} -o ${.TARGET} -l ${BTXLDR} \
 	    -b ${BTXKERN} ${LOADERBIN}
 .include <>