by GCC for HPPA to hold the return address where the signal trampoline
will resume. XXX Same treatment is needed for HPPA64, but not done as
part of this commit.
Thanks to thorpej for help with this. (ages ago)
used instead of secsize obtained by SAIOSECSIZE ioctl.
This hack avoids divdi3 and friends from being linked, in order to
support variable secsize for some archs.
Should be useful for ancient archs, for which secsize is fixed.
Thanks christos@ for comment.
This is wrong reasoning; 68020 and above (incl. 040 and 060) support
32-bit displacements for PC relative addressing (via "fully extension
addressing mode" with null index register).
I've still not figured out what goes wrong with amiga/boot(8) when
compiled without -l option for gas(1)...
On 2022/04/27 20:48, Rin Okuyama wrote:
> Module Name: src
> Committed By: rin
> Date: Wed Apr 27 11:48:26 UTC 2022
>
> Modified Files:
> src/sys/lib/libsa: ext2fs.c minixfs3.c stand.h ufs.c
>
> Log Message:
> Introduce SA_HARDCODED_SECSIZE hack, by which hardcoded DEV_BSIZE is
> used instead of secsize obtained by SAIOSECSIZE ioctl.
>
> This hack avoids divdi3 and friends from being linked, in order to
> support variable secsize.
>
> This is useful for amiga/boot(8); it is loaded by firmware into
> unpredictable address, and therefore all symbols should be
> addressable by PC relative mode with only 16-bit displacements.
>
> See sys/arch/amiga/stand/bootblock/{boot/bbstart.s,elf2bb,txlt} for
> more details.
>
>
> To generate a diff of this commit:
> cvs rdiff -u -r1.31 -r1.32 src/sys/lib/libsa/ext2fs.c
> cvs rdiff -u -r1.10 -r1.11 src/sys/lib/libsa/minixfs3.c
> cvs rdiff -u -r1.83 -r1.84 src/sys/lib/libsa/stand.h src/sys/lib/libsa/ufs.c
>
> Please note that diffs are not public domain; they are subject to the
> copyright notices on the relevant files.
used instead of secsize obtained by SAIOSECSIZE ioctl.
This hack avoids divdi3 and friends from being linked, in order to
support variable secsize.
This is useful for amiga/boot(8); it is loaded by firmware into
unpredictable address, and therefore all symbols should be
addressable by PC relative mode with only 16-bit displacements.
See sys/arch/amiga/stand/bootblock/{boot/bbstart.s,elf2bb,txlt} for
more details.
This way it is no longer necessary to mark variables __diagused if
they are used in KASSERT conditions.
Fix fallout from this by removing now-unnecessary and `#ifdef
DIAGNOSTIC'.
Don't do the same for KDASSERT if !DEBUG -- unlike KASSERT and
DIAGNOSTIC, variables needed by KDASSERT and DEBUG are likely to be
expensive to compute (and potentially difficult for a compiler to
prove flushable), so we don't want to require them under !DEBUG.
that change had no effect because vpanic() is marked __dead / noreturn
and thus the compiler would optimize away everything after a call to vpanic().
the original problem has now been fixed differently (but only for x86 so far).
by GCC for MIPS64 to hold the MDHI and MDLO registers, as well as the return
address where the signal trampoline will resume.
- In the MIPS64 validFloatVectorRegister(), compare against the internal
register numbers, not the DWARF register numbers.
by GCC for MIPS to hold the MDHI and MDLO registers, as well as the return
address where the signal trampoline will resume. XXX Same treatment is
needed for MIPS64, but not done as part of this commit.
- In the MIPS validFloatVectorRegister(), compare against the internal
register numbers, not the DWARF register numbers.
Normally, functions called from mcount.c are expected to be expanded inline,
so _mcount() will never be called recursively. But when build with COPTS=-O0,
`static inline' functions aren't inlined, and _mcount() will be called
recursively.
Even if _mcount() has `__attribute__((__no_ instrument_function__))',
it has no effect on the calling external (no-inlined) function.
To avoid this, PROF.<fn> is added can be set the profiling flag of any file.
"PROF.mcount.c" is set to blank by default, mcount.c itself is compiled
without -pg.
This harmonizes efiboot and the various x86 bootloaders to use shared
code for printing the banner. By friendly coincidence, it also adds
support for specifying 'banner=' in arm efiboot's boot.cfg, as on x86.
Fix ABI mismatch for armhf runtime routines for floating-point arithmetics;
For hard-float arm variants, provide
(1) generic runtime routines with correct calling convention, and
(2) EABI runtime routines at the same time.
I've confirmed that no binary changes for kernels.
LGTM by skrll
Bump LAST_REGISTER and LAST_RESTORE_REG to REGNO_ARM32_S31 for arm.
There are two numbering schemes for VFPv2 registers: s0-s31 and d0-d15.
The former is used by GCC, and the latter is by LLVM. Since libunwind was
derived from LLVM, it has never supported the former. This results in
crashes for GCC-compiled binaries in exception handler of C++, if it
encounters VFPv2 registers when unwinding frames.
This commit adds support for s0-s31 numbering to libunwind. I choose an
implementation in which VFPv2 registers are ``double-counted'' as s0-s31
AND d0-d15. This does not cause real problems, since the former is only
used by GCC, and the later is by LLVM. That is, different numbering
schemes cannot appear in a same frame. To make sure, assertions are added
in order to check this.
I've confirmed that no regression for ATF both for GCC- and LLVM-compiled
userlands.
Misc style fixes for clarity:
- Rename lazyVFP1() and lazyVFP3() to lazyVFPv2() and lazyVFPv3(),
respectively. Note that VFPv1 was obsoleted and replaced by VFPv2.
- Introduce enum for flags.
- Add few comments.
No functional changes.
ffs frontends to "ufs.c" now also define ufs_dinode_swap, ufs_indp_swap,
and FS_MAGIC (moved from ufs.c #if segments.) these are used to call
the right (32/64 bit) ffsv1/v2 version.
ufs.c 'struct file' gains f_swapped member. accessors for d_magic,
d_reclen, and d_ino are introduced (they need to be swapped.) sfter
reading an inode from disk, read_inode() may call ufs_dinode_swap().
indirect block number and caches may be swapped.
error handling in ffs_find_superblock() is cleaned up. (size is slightly
reduced on some ports with this part.)
defaults for new defines added to ufs.c. (XXX: we build ufs.c but i think
all the consumers don't use it, and we can stop building it.)
LFS support is not included.
add a cut-down copy of ffs_bswap.c from the kernel.
also enable bi-endian disklabel support in efiboot.
most ports build and sizes compared for platforms that don't enable this
code and all but one saw reduced code size. booted several platforms with
new boot code.
rin