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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>
2010-04-26tcg-hppa: Remove automatically implemented opcodes.Richard Henderson
Remove neg, ext8u, ext16u, as requested. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-26tcg-hppa: Fix branch offset during retranslation.Richard Henderson
Branch offsets should only be overwritten during relocation, to support partial retranslation. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-26tcg-hppa: Schedule the address masking after the TLB load.Richard Henderson
Issue the tlb load as early as possible and perform the address masking while the load is completing. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-26tcg-hppa: Fix softmmu loads and stores.Richard Henderson
Along the tlb hit path, we were modifying the variables holding the input register numbers, which lead to incorrect expansion of the tlb miss path. Fix this by extracting the tlb hit path to separate functions with their own local variables. This also makes the difference between softmmu and user-only easier to read. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-26tcg-hppa: Fix GUEST_BASE initialization in prologue.Richard Henderson
Load from the guest_base variable rather than embed a constant. Always reserve TCG_GUEST_BASE_REG if guest base support enabled. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-26tcg-hppa: Constrain immediate inputs to and_i32, or_i32, andc_i32.Richard Henderson
Define "M" constraint for and_mask_p and "O" constraint for or_mask_p. Assume that inputs are correct in tcg_out_ori and tcg_out_andi. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-25Remove dead assignments in various common files, spotted by clang analyzerBlue Swirl
Value stored is never read. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-25tcg/arm: fix condition in zero/sign extension functionsAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: don't try to load constants using pcAurelien Jarno
There is statistically almost 0 chances to use this code, so remove it. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: optimize register allocation orderAurelien Jarno
The beginning of the register allocation order list on the TCG arm target matches the list of clobbered registers. This means that when an helper is called, there is almost always clobbered registers that have to be spilled. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: fix argument alignment in qemu_st64Aurelien Jarno
64-bit arguments should be aligned on an even register as specified by the "Procedure Call Standard for the ARM Architecture". Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: remove useless register tests in qemu_ld/stAurelien Jarno
addr_reg, data_reg and data_reg2 can't be register r0 or r1 du to the constraints. Don't check if they equals these registers. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: bswap arguments in qemu_ld/st if neededAurelien Jarno
On big endian targets, data arguments of qemu_ld/st ops have to be byte swapped. Two temporary registers are needed for qemu_st to do the bswap. r0 and r1 are used in system mode, do the same in user mode, which implies reworking the constraints. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: use ext* ops in qemu_ldAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: remove conditional argument for qemu_ld/stAurelien Jarno
While it make sense to pass a conditional argument to tcg_out_*() functions as the ARM architecture allows that, it doesn't make sense for qemu_ld/st functions. These functions use comparison instructions and conditional execution already, so it is not possible to use a second level of conditional execution. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: add bswap opsAurelien Jarno
Add an bswap16 and bswap32 ops, either using the rev and rev16 instructions on ARMv6+ or shifts and logical operations on previous ARM versions. In both cases the result use less instructions than the pure TCG version. These ops are also needed by the qemu_ld/st functions. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: add ext16u opAurelien Jarno
Add an ext16u op, either using the uxth instruction on ARMv6+ or two shifts on previous ARM versions. In both cases the result use the same number or less instructions than the pure TCG version. Also move all sign extension code to separate functions, so that they can be reused in other parts of the code. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: add rotation opsAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: use the blx instruction when possibleAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: sxtb and sxth are available starting with ARMv6Aurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: add variables to define the allowed instructions setAurelien Jarno
Use a set of variables to define the allowed ARM instructions, depending on the __ARM_ARCH_*__ GCC defines. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: align 64-bit arguments in function callsAurelien Jarno
As specified by the "Procedure Call Standard for the ARM Architecture". Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: replace integer values by registers enumAurelien Jarno
The TCG ARM backends uses integer values to refer to both immediate values and register number. This makes the code difficult to read. The patch below replaces all (if I haven't miss any ;-) integer values representing register number by TCG_REG_* enum values. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: remove store signed functionsAurelien Jarno
Store signed functions doesn't make sense, and are not used. Remove them. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: explicitely list clobbered/reserved regsAurelien Jarno
Instead of writing very compact code, declare all registers that are clobbered or reserved one by one. This makes the code easier to read. Also declare all the 16 registers to TCG, and mark pc as reserved. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-19tcg/arm: remove SAVE_LR codeAurelien Jarno
There is no need to save the LR register (r14) before a call to a subroutine. According to the "Procedure Call Standard for the ARM Architecture", it is the job of the callee to save this register. Moreover, this register is already saved in the prologue/epilogue. This patch removes the disabled SAVE_LR code, as there is no need to reenable later. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-18tcg/ppc: Remove redundant comparison from brcond2malc
Signed-off-by: malc <av1474@comtv.ru>
2010-04-17Fix --enable-profiler compilation.Richard Henderson
There's a header file inclusion ordering problem between cpu-all.h and qemu-timer.h, such that cpu_get_real_ticks is not defined when we attempt to use it in profile_getclock. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-17tcg: Add missing static qualifiermalc
Build breaks otherwise when USE_LIVENESS_ANALYSIS is not defined. Signed-off-by: malc <av1474@comtv.ru>
2010-04-17tcg/ppc: Fix signed versions of brcond2malc
Thanks to: Alexander Graff, Thomas Gleixner and Andreas Faerber. Signed-off-by: malc <av1474@comtv.ru>
2010-04-14tcp/mips: Change TCG_AREG0 (fp -> s0)Stefan Weil
Register fp (frame pointer) is a bad choice for compilations without optimisation, because the compiler makes heavy use of this register (so the resulting code crashes). Register s0 had been used for TCG_AREG1 in earlier releases, but was no longer used and is now free for TCG_AREG0. The resulting code works for compilations without optimisation (tested with qemu mips in qemu mips on x86 host). Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-10tcg/README: improve description of bswap*Aurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-08tcg-hppa: Don't try to calls to non-constant addresses.Richard Henderson
PA-RISC uses procedure descriptors. We'd need to emit a call to the millicode routine $$dyncall. However, this situation doesn't actually arise, since we always have the descriptor available at TCG code generation time. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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