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2010-10-20tcg: Fix compiler error (comparison of unsigned expression)Stefan Weil
When qemu is configured with --enable-debug-tcg, gcc throws this warning (or error with -Werror): tcg/tcg.c:1030: error: comparison of unsigned expression >= 0 is always true Fix it by removing the >= 0 part. The type cast to 'unsigned' catches negative values of op (which should never happen). This is a modification of Hollis Blanchard's patch. Cc: Hollis Blanchard <hollis@penguinppc.org> Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-08-15TCG: Revert ppc64 tcg_out_movi32 changeAndreas Färber
3b6dac34161bc0a342336072643c2f6d17e0ec45 apparently broke the ppc64 TCG target compilation in the code path without guest base. Reverting this line fixes the build. Signed-off-by: Andreas F?rber <andreas.faerber@web.de> Cc: malc <av1474@comtv.ru> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: malc <av1474@comtv.ru>
2010-08-15TCG: Fix Darwin/ppc calling convention recognitionAndreas Färber
5da79c86a3744e3a901c7986c109dd06951befd2 broke compilation on Mac OS X v10.5 ppc. Apple's GCC 4.0.1 does not define _CALL_DARWIN. Recognize __APPLE__ again as well. Signed-off-by: Andreas F?rber <andreas.faerber@web.de> Cc: malc <av1474@comtv.ru> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: J?rgen Lock <nox@jelal.kn-bremen.de> Cc: Stefan Weil <weil@mail.berlios.de> Signed-off-by: malc <av1474@comtv.ru>
2010-06-29tcg-s390: new TCG TargetRichard Henderson
Original patch from Ulrich Hecht, further work from Alexander Graf and Richard Henderson. Cc: Ulrich Hecht <uli@suse.de> Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-29tcg-ppc: Conditionally reserve TCG_GUEST_BASE_REG.Richard Henderson
We need not reserve the register unless we're going to use it. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: malc <av1474@comtv.ru>
2010-06-16tcg: Optionally sign-extend 32-bit arguments for 64-bit hosts.Richard Henderson
Some hosts (amd64, ia64) have an ABI that ignores the high bits of the 64-bit register when passing 32-bit arguments. Others require the value to be properly sign-extended for the type. I.e. "int32_t" must be sign-extended and "uint32_t" must be zero-extended to 64-bits. To effect this, extend the "sizemask" parameter to tcg_gen_callN to include the signedness of the type of each parameter. If the tcg target requires it, extend each 32-bit argument into a 64-bit temp and pass that to the function call. This ABI feature is required by sparc64, ppc64 and s390x. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-11tcg: fix DEF macro after commit c61aaf7a388c4ad95d8b546fdb9267dc01183317Aurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-11tcg-s390: Icache flush is a no-op.Richard Henderson
Before gcc 4.2, __builtin___clear_cache doesn't exist, and afterward the gcc s390 backend implements it as nothing. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-10tcg-i386: fix andi r, r, 0xffAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-10tcg-i386: remove use of _Bool that slipped code reviewAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-10tcg-i386: Merge 64-bit generation.Richard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-09tcg: get rid of DEF2 in tcg-opc.hAurelien Jarno
Now that tcg-opc.h is only used in TCG code, get rid of DEF2 in tcg-opc.h. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-09tcg: get rid of copy_size in TCGOpDefAurelien Jarno
copy_size is a left-over from the dyngen era, remove it. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-09tcg: Make some tcg-target.c routines static.Richard Henderson
Both tcg_target_init and tcg_target_qemu_prologue are unused outside of tcg.c. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-09tcg: Add TYPE parameter to tcg_out_mov.Richard Henderson
Mirror tcg_out_movi in having a TYPE parameter. This allows x86_64 to perform the move at the proper width, which may elide a REX prefix. Introduce a TCG_TYPE_REG enumerator to represent the "native width" of the host register, and to distinguish the usage from "pointer data" as represented by the existing TCG_TYPE_PTR. Update all targets to match. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-03tcg-i386: fix a typoAurelien Jarno
Fix a typo introduced by c28b14c694d759f39fe3ae4f8d03b567da5b93f8. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-02tcg-i386: declare tcg_out_tlb_load() inlineAurelien Jarno
Declare tcg_out_tlb_load() inline so that we don't loose optimisations with commit 8516a04467cb7954cdc32e8b79b4b7df56dccb16. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-02tcg-i386: Remove some ifdefs in qemu_ld/st.Richard Henderson
Tidy some code by replacing ifdefs by C ifs. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-02tcg-i386: Split out tlb load function.Richard Henderson
Share some code between qemu_ld and qemu_st. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-02tcg-i386: Swap order of TLB hit and miss paths.Richard Henderson
Make fallthru be TLB hit and branch be TLB miss. Doing this both improves branch prediction and will allow further cleanup. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-02tcg-i386: Split out TLB Hit path from qemu_ld/st.Richard Henderson
Splitting out these functions will allow further cleanups. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-06-02tcg-i386: Tidy data16 prefixes.Richard Henderson
Include it in the opcode as an extension, as with P_EXT or the REX bits in the x86-64 port. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-28tcg: Use INDEX_op_qemu_ld32 for 32-bit results.Richard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-ia64: Load GUEST_BASE into a register.Richard Henderson
Saves one bundle per memory operation. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-ia64: Fix some register usage issues.Richard Henderson
(1) The output registers were not marked call-clobbered, even though they can be modified by called functions. (2) The thread pointer was not marked reserved. (3) R4-R6 are call-saved, but not saved by the prologue. Rather than save them, mark them reserved so that we don't use them. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-hppa: Load GUEST_BASE as an immediate.Richard Henderson
Now that the prologue is generated after GUEST_BASE is fixed, we can load it as an immediate, and also avoid reserving the register if it isn't necessary. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg: Initialize the prologue after GUEST_BASE is fixed.Richard Henderson
This will allow backends to make intelligent choices about how to implement GUEST_BASE. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Nuke trailing whitespace.Richard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Use lea for three-operand add.Richard Henderson
The result is shorter than the mov+add that TCG would otherwise generate for us. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy lea.Richard Henderson
Implement full modrm+sib addressing mode processing. Use that in qemu_ld/st to output the LEA. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy xchg.Richard Henderson
Define and use OPC_XCHG_ax_r32. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy multiply.Richard Henderson
Define and use OPC_IMUL_GvEv{,Ib,Iz}. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy unary arithmetic.Richard Henderson
Define OPC_GRP3 and EXT3_FOO to match. Use them instead of bare constants. Define OPC_GRP5 and rename the existing EXT_BAR to EXT5_BAR to make it clear which extension should be used with which opcode. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy setcc.Richard Henderson
Define and use OPC_SETCC. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy ret.Richard Henderson
Define and use OPC_RET. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy calls.Richard Henderson
Define OPC_CALL_Jz, generated by tcg_out_calli; use the later throughout. Unify the calls within qemu_st; adjust the stack with a single pop if applicable. Define and use EXT_CALLN_Ev for indirect calls. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy push/pop.Richard Henderson
Move tcg_out_push/pop up in the file so that they can be used by qemu_ld/st. Define a tcg_out_pushi to be used as well. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy movi.Richard Henderson
Define and use OPC_MOVL_Iv. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy non-immediate arithmetic operations.Richard Henderson
Add more OPC values, and tgen_arithr. Use the later throughout. Note that normal reg/reg arithmetic now uses the Gv,Ev opcode form instead of the Ev,Gv opcode form used previously. Both forms disassemble properly, and so there's no visible change when diffing log files before and after the change. This change makes the operand ordering within the output routines more natural, and avoids the need to define an OPC_ARITH_EvGv since a read-modify-write with memory is not needed within TCG. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy immediate arithmetic operations.Richard Henderson
Define OPC_ARITH_EvI[bz]; use throughout. Use tcg_out_ext8u directly in setcond. Use tgen_arithi in qemu_ld/st. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy ext8s and ext16s operations.Richard Henderson
Define OPC_MOVSBL and OPC_MOVSWL. Factor opcode emission to separate functions. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-21tcg-i386: Tidy ext8u and ext16u operations.Richard Henderson
Define OPC_MOVZBL and OPC_MOVZWL. Factor opcode emission to separate functions. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-20tcg-i386: Tidy jumps.Richard Henderson
Define OPC_JCC*, OC_JMP*, and EXT_JMPN_Ev. Use them throughout. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-20tcg-i386: Eliminate extra move from qemu_ld64.Richard Henderson
If the address register overlaps one of the output registers simply issue the clobbering load last, rather than emitting an extra move of the address register. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-20tcg-i386: Tidy move operations.Richard Henderson
Define OPC_MOVB* and OPC_MOVL*; use them throughout. Use tcg_out_ld/st instead of bare tcg_out_modrm_offset when it makes sense. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-20tcg-i386: Tidy shift operations.Richard Henderson
Define OPC_SHIFT_{1,Ib,cl}. Factor opcode emission to a function. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-20tcg-i386: Tidy bswap operations.Richard Henderson
Define OPC_BSWAP. Factor opcode emission to separate functions. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-19tcg-i386: Tidy initialization of tcg_target_call_clobber_regs.Richard Henderson
Setting the registers one by one is easier to read, and gets optimized by the compiler just the same. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-19tcg-i386: Allocate call-saved registers first.Richard Henderson
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-07tcg: Add missing 'static' attributeStefan Weil
tcg_out_reloc is only used locally (in */target.c which is included in tcg.c). Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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