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2021-01-13tcg: Add tcg_reg_alloc_dup2Richard Henderson
There are several ways we can expand a vector dup of a 64-bit element on a 32-bit host. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Remove movi and dupi opcodesRichard Henderson
These are now completely covered by mov from a TYPE_CONST temporary. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg/tci: Add special tci_movi_{i32,i64} opcodesRichard Henderson
The normal movi opcodes are going away. We need something for TCI to use internally. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Use tcg_constant_{i32,i64,vec} with gvec expandersRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Use tcg_constant_{i32,i64} with tcg int expandersRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Convert tcg_gen_dupi_vec to TCG_CONSTRichard Henderson
Because we now store uint64_t in TCGTemp, we can now always store the full 64-bit duplicate immediate. So remove the difference between 32- and 64-bit hosts. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg/optimize: Use tcg_constant_internal with constant foldingRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg/optimize: Adjust TempOptInfo allocationRichard Henderson
Do not allocate a large block for indexing. Instead, allocate for each temporary as they are seen. In general, this will use less memory, if we consider that most TBs do not touch every target register. This also allows us to allocate TempOptInfo for new temps created during optimization. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg/optimize: Improve find_better_copyRichard Henderson
Prefer TEMP_CONST over anything else. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Introduce TYPE_CONST temporariesRichard Henderson
These will hold a single constant for the duration of the TB. They are hashed, so that each value has one temp across the TB. Not used yet, this is all infrastructure. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Expand TempOptInfo to 64-bitsRichard Henderson
This propagates the extended value of TCGTemp.val that we did before. In addition, it will be required for vector constants. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Rename struct tcg_temp_info to TempOptInfoRichard Henderson
Fix this name vs our coding style. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Expand TCGTemp.val to 64-bitsRichard Henderson
This will reduce the differences between 32-bit and 64-bit hosts, allowing full 64-bit constants to be created with the same interface. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Add temp_readonlyRichard Henderson
In most, but not all, places that we check for TEMP_FIXED, we are really testing that we do not modify the temporary. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Consolidate 3 bits into enum TCGTempKindRichard Henderson
The temp_fixed, temp_global, temp_local bits are all related. Combine them into a single enumeration. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Increase tcg_out_dupi_vec immediate to int64_tRichard Henderson
While we don't store more than tcg_target_long in TCGTemp, we shouldn't be limited to that for code generation. We will be able to use this for INDEX_op_dup2_vec with 2 constants. Also pass along the minimal vece that may be said to apply to the constant. This allows some simplification in the various backends. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-13tcg: Use tcg_out_dupi_vec from temp_loadRichard Henderson
Having dupi pass though movi is confusing and arguably wrong. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Constify TCGLabelQemuLdst.raddrRichard Henderson
Now that all native tcg hosts support splitwx, make this pointer const. Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Constify tcg_code_gen_epilogueRichard Henderson
Now that all native tcg hosts support splitwx, make this pointer const. Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Remove TCG_TARGET_SUPPORT_MIRRORRichard Henderson
Now that all native tcg hosts support splitwx, remove the define. Replace the one use with a test for CONFIG_TCG_INTERPRETER. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/arm: Support split-wx code generationRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/mips: Support split-wx code generationRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/mips: Do not assert on relocation overflowRichard Henderson
This target was not updated with 7ecd02a06f8, and so did not allow re-compilation with relocation overflow. Remove reloc_26 and reloc_26_val as unused. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/riscv: Support split-wx code generationRichard Henderson
Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/riscv: Remove branch-over-branch fallbackRichard Henderson
Since 7ecd02a06f8, we are prepared to re-start code generation with a smaller TB if a relocation is out of range. We no longer need to leave a nop in the stream Just In Case. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/riscv: Fix branch range checksRichard Henderson
The offset even checks were folded into the range check incorrectly. By offsetting by 1, and not decrementing the width, we silently allowed out of range branches. Assert that the offset is always even instead. Move tcg_out_goto down into the CONFIG_SOFTMMU block so that it is not unused. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/s390: Support split-wx code generationRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/s390: Use tcg_tbrel_diffRichard Henderson
Use tcg_tbrel_diff when we need a displacement to a label, and with a NULL argument when we need the normalizing addend. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/sparc: Support split-wx code generationRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/sparc: Use tcg_tbrel_diffRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/ppc: Support split-wx code generationRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/ppc: Use tcg_out_mem_long to reset TCG_REG_TBRichard Henderson
The maximum TB code gen size is UINT16_MAX, which the current code does not support. Use our utility function to optimally add an arbitrary constant. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/ppc: Use tcg_tbrel_diffRichard Henderson
Use tcg_tbrel_diff when we need a displacement to a label, and with a NULL argument when we need the normalizing addend. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/tci: Push const down through bytecode readingRichard Henderson
Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/aarch64: Support split-wx code generationRichard Henderson
Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/aarch64: Use B not BL for tcg_out_goto_longRichard Henderson
A typo generated a branch-and-link insn instead of plain branch. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg/i386: Support split-wx code generationRichard Henderson
Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Return the TB pointer from the rx region from exit_tbRichard Henderson
This produces a small pc-relative displacement within the generated code to the TB structure that preceeds it. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Add --accel tcg,split-wx propertyRichard Henderson
Plumb the value through to alloc_code_gen_buffer. This is not supported by any os or tcg backend, so for now enabling it will result in an error. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Make DisasContextBase.tb constRichard Henderson
There is nothing within the translators that ought to be changing the TranslationBlock data, so make it const. This does not actually use the read-only copy of the data structure that exists within the rx region. Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Adjust tb_target_set_jmp_target for split-wxRichard Henderson
Pass both rx and rw addresses to tb_target_set_jmp_target. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Adjust tcg_register_jit for constRichard Henderson
We must change all targets at once, since all must match the declaration in tcg.c. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Adjust tcg_out_label for constRichard Henderson
Simplify the arguments to always use s->code_ptr instead of take it as an argument. That makes it easy to ensure that the value_ptr is always the rx version. Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Adjust tcg_out_call for constRichard Henderson
We must change all targets at once, since all must match the declaration in tcg.c. Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Adjust TCGLabel for constRichard Henderson
Change TCGLabel.u.value_ptr to const, and initialize it with tcg_splitwx_to_rx. Propagate const through tcg/host/ only as far as needed to avoid errors from the value_ptr change. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Introduce tcg_splitwx_to_{rx,rw}Richard Henderson
Add two helper functions, using a global variable to hold the displacement. The displacement is currently always 0, so no change in behaviour. Begin using the functions in tcg common code only. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Move tcg epilogue pointer out of TCGContextRichard Henderson
This value is constant across all thread-local copies of TCGContext, so we might as well move it out of thread-local storage. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Move tcg prologue pointer out of TCGContextRichard Henderson
This value is constant across all thread-local copies of TCGContext, so we might as well move it out of thread-local storage. Use the correct function pointer type, and name the variable tcg_qemu_tb_exec, which means that we are able to remove the macro that does the casting. Replace HAVE_TCG_QEMU_TB_EXEC with CONFIG_TCG_INTERPRETER, as this is somewhat clearer in intent. Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07util: Enhance flush_icache_range with separate data pointerRichard Henderson
We are shortly going to have a split rw/rx jit buffer. Depending on the host, we need to flush the dcache at the rw data pointer and flush the icache at the rx code pointer. For now, the two passed pointers are identical, so there is no effective change in behaviour. Reviewed-by: Joelle van Dyne <j@getutm.app> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-01-07tcg: Do not flush icache for interpreterRichard Henderson
This is currently a no-op within tci/tcg-target.h, but is about to be moved to a more generic location. Reviewed-by: Joelle van Dyne <j@getutm.app> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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