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20 Commits

Author SHA1 Message Date
Richard Henderson 52065d8f46 target/microblaze: Convert dec_stream to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:43:35 -07:00
Richard Henderson 9df297a2d8 target/microblaze: Convert dec_msr to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:43:35 -07:00
Richard Henderson 536e340f46 target/microblaze: Convert msrclr, msrset to decodetree 
Split this out of dec_msr.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:43:35 -07:00
Richard Henderson e6cb035488 target/microblaze: Convert dec_rts to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:43:35 -07:00
Richard Henderson fd77911304 target/microblaze: Convert dec_bcc to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:43:35 -07:00
Richard Henderson 16bbbbc91a target/microblaze: Convert dec_br to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:43:35 -07:00
Richard Henderson ee8c7f9f9a target/microblaze: Convert mbar to decodetree 
Split this out of the normal branch instructions,
as it requires special handling.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:43:35 -07:00
Richard Henderson f523531471 target/microblaze: Convert brk and brki to decodetree 
Split these out of the normal branch instructions, as they require
special handling.  Perform the entire operation inline, instead of
raising EXCP_BREAK to do the work in mb_cpu_do_interrupt.

This fixes a bug in that brki rd, imm, for imm != 0x18 is not
supposed to set MSR_BIP.  This fixes a bug in that imm == 0 is
the reset vector and 0x18 is the debug vector, and neither should
raise a tcg exception in system mode.

Introduce EXCP_SYSCALL for microblaze-linux-user.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:43:35 -07:00
Richard Henderson d8e59c4a6f target/microblaze: Convert dec_load and dec_store to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson d5aead3df4 target/microblaze: Convert dec_fpu to decodetree 
The current dec_check_fpuv2 test, raising an FPU exception for
an unimplemented instruction, appears to be contradictory to
the manual.  Drop that and merely check use_fpu == 2.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson e64b2e5cfe target/microblaze: Convert dec_imm to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson 081d8e02c3 target/microblaze: Convert dec_barrel to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson 39cf386458 target/microblaze: Convert dec_bit to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson b1354342c1 target/microblaze: Convert dec_div to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson 97955ceb42 target/microblaze: Convert dec_mul to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson cb0a0a4c86 target/microblaze: Convert dec_and, dec_or, dec_xor to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson 607f576762 target/microblaze: Convert dec_pattern to decodetree 
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson a2b0b90e79 target/microblaze: Convert dec_sub to decodetree 
Use tcg_gen_add2_i32 for computing carry.
This removes the last use of helper_carry, so remove that.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson 2080017965 target/microblaze: Convert dec_add to decodetree 
Adds infrastrucure for translation of instructions, which could
not be added before their first use.  Cache a temporary which
represents r0 as the immediate 0 value, or a sink.

Move the special case of opcode_0_illegal from old_decode()
into decodetree as well, lest this get interpreted as add.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00
Richard Henderson 44d1432ba2 target/microblaze: Add decodetree infrastructure 
The new interface is a stub that recognizes no instructions.
It falls back to the old decoder for all instructions.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
 2020-09-01 07:41:38 -07:00