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| author | Sergey Bugaev <bugaevc@gmail.com> | 2024-03-27 19:18:34 +0300 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-03-27 19:51:06 +0100 |
| commit | 62e3c40ebb090e24c70a38c13957f5a02857383e (patch) | |
| tree | 0c866ffc3e0222486ae71c0bbce8de04604b1b4a | |
| parent | 6036cc18e6a67a15e2b6d9dff37d05b411c199c3 (diff) | |
| download | gnumach-62e3c40ebb090e24c70a38c13957f5a02857383e.tar.gz gnumach-62e3c40ebb090e24c70a38c13957f5a02857383e.tar.bz2 gnumach-62e3c40ebb090e24c70a38c13957f5a02857383e.zip | |
Make -fno-PIE etc. architecture-dependent
There might be good reasons why Mach on x86 shouldn't be built as PIC/
PIE, but there are also very good reasons to support PIE on other
architectures. Potentially implementing KASLR is one such reason; but
also the Linux AArch64 boot protocol (that the AArch64 port will use for
booting) lets the bootloader load the kernel image at any address,
which makes PIC pretty much required.
Message-ID: <20240327161841.95685-11-bugaevc@gmail.com>
| -rw-r--r-- | Makefile.am | 4 | ||||
| -rw-r--r-- | i386/Makefrag.am | 4 | ||||
| -rw-r--r-- | x86_64/Makefrag.am | 4 |
3 files changed, 8 insertions, 4 deletions
diff --git a/Makefile.am b/Makefile.am index ad38249b..357e8470 100644 --- a/Makefile.am +++ b/Makefile.am @@ -79,10 +79,6 @@ AM_CFLAGS += \ -fno-stack-protector endif -# We do not support or need position-independent -AM_CFLAGS += \ - -no-pie -fno-PIE -fno-pie -fno-pic - # This must be the same size as port names, see e.g. ipc/ipc_entry.c AM_CFLAGS += -DRDXTREE_KEY_32 diff --git a/i386/Makefrag.am b/i386/Makefrag.am index 5e7d4740..7a339417 100644 --- a/i386/Makefrag.am +++ b/i386/Makefrag.am @@ -170,6 +170,10 @@ gnumach_LINKFLAGS += \ -T '$(srcdir)'/i386/ldscript endif +# We do not support or need position-independent +AM_CFLAGS += \ + -no-pie -fno-PIE -fno-pie -fno-pic + AM_CFLAGS += \ -mno-3dnow \ -mno-mmx \ diff --git a/x86_64/Makefrag.am b/x86_64/Makefrag.am index 2bbed986..a3a52bf1 100644 --- a/x86_64/Makefrag.am +++ b/x86_64/Makefrag.am @@ -236,6 +236,10 @@ gnumach_LINKFLAGS += \ -T '$(srcdir)'/x86_64/ldscript endif +# We do not support or need position-independent +AM_CFLAGS += \ + -no-pie -fno-PIE -fno-pie -fno-pic + AM_CFLAGS += -D_START_MAP=$(_START_MAP) \ -DKERNEL_MAP_BASE=$(KERNEL_MAP_BASE) AM_CCASFLAGS += -D_START_MAP=$(_START_MAP) \ |