Commit Graph

29 Commits

Author SHA1 Message Date
Laurent Desnogues 7990496dcb ARM back-end: Use sxt[bh] instructions for ext{8, 6}s
This patch uses sxtb for ext8s_i32 and sxth for ext16s_i32 in ARM back-end.

Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-09-26 21:29:59 +02:00
Stefan Weil d89c682f20 Suppress some variants of English in comments
Replace surpress, supress by suppress.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-09-25 16:31:35 +02:00
Laurent Desnogues 4e6f6d4c20 ARM back-end: Fix encode_imm
the encode_imm function in tcg/arm/tcg-target.c lacks shift declaration.

Laurent

Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2009-08-25 01:14:14 +02:00
Laurent Desnogues 94953e6d74 ARM back-end: Handle all possible immediates for ALU ops
this patch handles all possible constants for immediate operand of ALU ops.
I'm not very satisfied by the implementation.

Laurent

Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2009-08-22 14:29:09 +02:00
Laurent Desnogues f878d2d235 ARM back-end: Add TCG not
this patch:

 - implements TCG not.

Laurent

Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2009-08-22 13:55:06 +02:00
Juan Quintela e2542fe2bc rename WORDS_BIGENDIAN to HOST_WORDS_BIGENDIAN
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-27 14:09:21 -05:00
Laurent Desnogues cb4e581fae this patch improves the ARM back-end in the following way:
- use movw/movt to load immediate values for ARMv7-A
- implement add/sub/and/or/xor with immediate (only 8-bit)

Laurent

Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2009-07-18 14:20:30 +02:00
Paul Brook 379f6698d7 Userspace guest address offsetting
Re-implement GUEST_BASE support.
Offset guest ddress space by default if the guest binary contains
regions below the host mmap_min_addr.
Implement support for i386, x86-64 and arm hosts.

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-07-17 13:12:41 +01:00
Paul Brook 2d69f3590d ARM host fixes
Minor TCG cleanups and warning fixes for ARM hosts.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-07-17 11:21:12 +01:00
aurel32 66896cb803 tcg: rename bswap_i32/i64 functions
Rename bswap_i32 into bswap32_i32 and bswap_i64 into bswap64_i64

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6829 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-13 09:34:48 +00:00
aurel32 419bafa517 tcg-arm: fix qemu_ld64
Emulating fldl on arm doesn't seem to work too well. It's the way
qemu_ld64 is translated to arm instructions.

        tcg_out_ld32_12(s, COND_AL, data_reg, addr_reg, 0);
        tcg_out_ld32_12(s, COND_AL, data_reg2, addr_reg, 4);

Consider case where data_reg==0, data_reg2==1, and addr_reg==0. First load
overwrited addr_reg. So let's put an if (data_ref==addr_reg).

(Pablo Virolainen)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6808 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-10 21:43:25 +00:00
blueswir1 e63d7abdde Prune unused TCG_AREGs
Remove definitions for TCG_AREGs corresponding to AREG definitions
removed in r6778.

Signed-off-by: Stuart Brady <stuart.brady@gmail.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6779 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-08 14:45:45 +00:00
balrog aef3a282a4 Fix 64-bit targets compilation on ARM host.
Only fix compilation, probably doesn't run.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5947 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-07 23:35:47 +00:00
balrog 0c9c3a9e3a arm: Don't potentially overwrite input registers in add2, sub2.
According to malc TCG will often genereate an add2/sub2/mul2 with low
half of the output in the same register as high half of one of the
inputs, so account for that.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5847 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-01 11:57:21 +00:00
balrog fe33867b0d Don't rely on ARM tcg_out_goto() generating just a single insn.
Otherwise when tb_exit generates a jump beyond the pc-relative range,
tcg_out_goto() spans two/three instructions and we load the tb return
value from a wrong address.  This is #ifdefed out currently because
we take care for the jumps to be local.
Problem spotted by Steffen Liebergeld.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5845 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-01 02:17:12 +00:00
balrog 3233f0d463 Use libgcc __clear_cache to clean icache, when available.
Calling the clear cache syscall directly generates an illegal instruction 
on some (armv4) kernels.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5843 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-01 02:02:37 +00:00
blueswir1 d4a9eb1fc6 Add some missing static and const qualifiers, reg_names only used if NDEBUG set
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5421 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-05 09:59:14 +00:00
blueswir1 79383c9c08 Fix some warnings that would be generated by gcc -Wredundant-decls
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5115 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-30 09:51:20 +00:00
pbrook 9b7b85d260 Fix off-by-one unwinding error.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4570 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-25 00:36:06 +00:00
balrog d0660ed482 Relax a constraint for qemu_ld64 on ARM host.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4567 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-24 23:12:19 +00:00
balrog eae6ce5238 Fix a deadly typo, correct comments.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4566 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-24 22:56:51 +00:00
pbrook 3979144c49 Fix ARM host TLB.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4564 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-24 20:07:07 +00:00
balrog 91a3c1b00d Comment non-obvious calculation. Don't clobber r3 in qemu_st64.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4548 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-23 18:51:15 +00:00
balrog e936243aca A branch insn must not overwrite the branch target before relocation.
When a branch to label is translated it generates a reloc that is filled in
when the label is translated.  However, when handling an exception and
searching for the pc we abort the translation early and we sometimes
translate the branch but not the corresponding label and so no relocation
is done.  When the block is executed again the branch points to no-where.

It seems tcg/sparc/ is going to suffer from the same issue.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4547 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-23 18:50:44 +00:00
balrog 225b437649 Fix qemu_ld/st for mem_index > 0 on arm host.
offsetof(CPUState, tlb_table[mem_index][0].addr_read) with mem_index > 0
was larger than max immediate offset for ldr and str (12-bit) so insert an
additional insn to add the mem_index offset.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4542 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-23 12:55:11 +00:00
balrog bedba0cd07 Define TCG_TARGET_CALL_STACK_OFFSET on arm.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4541 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-23 12:47:22 +00:00
balrog 204c1674ef Fix 8-bit signed load/store and a typo.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4504 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-20 11:28:35 +00:00
balrog 650bbb361e Implement neg_i32, clean-up.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4503 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-20 11:26:40 +00:00
balrog 811d4cf4b0 ARM host support for TCG targets.
Updated from previous version to use the tcg prologue/epilogue mechanism, may be slower than direct call.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4500 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-19 23:59:38 +00:00