rtl: refactor filenames and directory hierarchy

1 files changed, 0 insertions, 295 deletions

diff --git a/rtl/core/decode/mux.sv b/rtl/core/decode/mux.sv
deleted file mode 100644
index 6f0451a..0000000
--- a/rtl/core/decode/mux.sv
+++ /dev/null
@@ -1,295 +0,0 @@
-`include "core/decode/isa.sv"
-`include "core/uarch.sv"
-
-module core_decode_mux
-(
-	input  word          insn,
-
-	input  logic         branch_link,
-
-	input  snd_decode    snd,
-	input  logic         snd_undefined,
-
-	input  data_decode   data,
-	input  logic         data_writeback,
-	                     data_conditional,
-	                     data_update_flags,
-	                     data_restore_spsr,
-	                     data_is_imm,
-	                     data_shift_by_reg_if_reg,
-
-	input  ldst_decode   ldst_misc,
-	                     ldst_single,
-	                     ldst_multiple,
-	                     ldst_exclusive,
-	input  logic         ldst_single_is_imm,
-	                     ldst_misc_off_is_imm,
-	input  reg_num       ldst_ex_snd_r,
-	                     ldst_misc_off_reg,
-	input  logic[7:0]    ldst_misc_off_imm,
-	input  logic         ldst_mult_restore_spsr,
-	input  data_decode   data_ldst,
-
-	input  logic         mul_update_flags,
-	input  reg_num       mul_rd,
-	                     mul_rs,
-	                     mul_rm,
-
-	input  coproc_decode dec_coproc,
-	input  logic         coproc_writeback,
-	                     coproc_update_flags,
-	input  reg_num       coproc_rd,
-
-	input  logic         msr_spsr,
-	                     msr_is_imm,
-	                     mrs_spsr,
-	input  reg_num       mrs_rd,
-	input  msr_mask      msr_fields,
-
-	output snd_decode    dec_snd,
-	output data_decode   dec_data,
-	output ldst_decode   dec_ldst,
-	                     ldst_addr,
-	output logic         execute,
-	                     undefined,
-	                     conditional,
-	                     writeback,
-	                     branch,
-	                     ldst,
-	                     mul,
-	                     psr,
-	                     swi,
-	                     coproc,
-	                     bkpt,
-	                     psr_saved,
-	                     psr_write,
-	                     psr_wr_flags,
-	                     psr_wr_control,
-	                     update_flags,
-	                     restore_spsr,
-	                     snd_is_imm,
-	                     snd_ror_if_imm,
-	                     snd_shift_by_reg_if_reg
-);
-
-	always_comb begin
-		mul = 0;
-		swi = 0;
-		psr = 0;
-		ldst = 0;
-		bkpt = 0;
-		branch = 0;
-		coproc = 0;
-		execute = 1;
-		undefined = 0;
-		writeback = 0;
-		conditional = 0;
-		restore_spsr = 0;
-
-		psr_saved = 0;
-		psr_write = 0;
-		update_flags = 0;
-		psr_wr_flags = 1;
-		psr_wr_control = 1;
-
-		dec_data = {($bits(dec_data)){1'bx}};
-		dec_data.uses_rn = 1;
-
-		dec_snd = {$bits(dec_snd){1'bx}};
-		dec_snd.shr = 0;
-		dec_snd.ror = 0;
-		dec_snd.is_imm = 1;
-		dec_snd.shift_imm = {$bits(dec_snd.shift_imm){1'b0}};
-		dec_snd.shift_by_reg = 0;
-
-		snd_is_imm = 1'bx;
-		snd_ror_if_imm = 1'bx;
-		snd_shift_by_reg_if_reg = 1'bx;
-
-		dec_ldst = {($bits(dec_ldst)){1'bx}};
-		ldst_addr = {($bits(ldst_addr)){1'bx}};
-
-		// El orden de los casos es importante, NO CAMBIAR
-		priority casez(insn `FIELD_OP)
-			`GROUP_B: begin
-				branch = 1;
-				dec_data.uses_rn = branch_link;
-
-				if(branch_link) begin
-					dec_data.op = `ALU_SUB;
-					dec_data.rd = `R14;
-					dec_data.rn = `R15;
-					dec_snd.imm = 12'd4;
-					writeback = 1;
-				end
-			end
-
-			`GROUP_MUL: begin
-				mul = 1;
-
-				dec_data.rd = mul_rd;
-				dec_data.rn = mul_rs;
-
-				dec_snd.is_imm = 0;
-				dec_snd.r = mul_rm;
-
-				writeback = 1;
-				update_flags = mul_update_flags;
-			end
-
-			`GROUP_LDST_EX: begin
-				dec_ldst = ldst_exclusive;
-				ldst_addr = ldst_exclusive;
-
-				dec_snd.r = ldst_ex_snd_r;
-				dec_snd.is_imm = ldst_exclusive.load;
-			end
-
-			`GROUP_LDST_MISC: begin
-				dec_ldst = ldst_misc;
-				ldst_addr = ldst_misc;
-
-				dec_snd.r = ldst_misc_off_reg;
-				dec_snd.imm = {4'b0, ldst_misc_off_imm};
-				dec_snd.is_imm = ldst_misc_off_is_imm;
-			end
-
-			`GROUP_ALU: begin
-				snd_is_imm = data_is_imm;
-				snd_ror_if_imm = 1;
-				snd_shift_by_reg_if_reg = data_shift_by_reg_if_reg;
-
-				dec_snd = snd;
-				dec_data = data;
-
-				writeback = data_writeback;
-				update_flags = data_update_flags;
-				restore_spsr = data_restore_spsr;
-
-				undefined = snd_undefined;
-				conditional = data_conditional;
-			end
-
-			`GROUP_LDST_SINGLE: begin
-				snd_is_imm = ldst_single_is_imm;
-				snd_ror_if_imm = 0;
-				snd_shift_by_reg_if_reg = 0;
-
-				dec_snd = snd;
-				dec_ldst = ldst_single;
-				ldst_addr = ldst_single;
-
-				undefined = snd_undefined;
-			end
-
-			`GROUP_LDST_MULT: begin
-				dec_ldst = ldst_multiple;
-				ldst_addr = ldst_multiple;
-				dec_snd.imm = 12'd4;
-
-				restore_spsr = ldst_mult_restore_spsr;
-			end
-
-			`GROUP_CP: begin
-				coproc = 1;
-				writeback = coproc_writeback;
-				update_flags = coproc_update_flags;
-
-				dec_data.op = `ALU_MOV;
-				dec_data.rn = coproc_rd;
-				dec_data.rd = coproc_rd;
-				dec_data.uses_rn = dec_coproc.load;
-			end
-
-			`INSN_MRS: begin
-				dec_data.rd = mrs_rd;
-				dec_data.uses_rn = 0;
-
-				psr = 1;
-				psr_saved = mrs_spsr;
-				writeback = 1;
-				conditional = 1;
-			end
-
-			`GROUP_MSR: begin
-				dec_data.uses_rn = 0;
-
-				snd_is_imm = msr_is_imm;
-				snd_ror_if_imm = 1;
-				snd_shift_by_reg_if_reg = 0;
-
-				psr = 1;
-				dec_snd = snd;
-				psr_write = 1;
-				psr_saved = msr_spsr;
-				conditional = 1;
-				psr_wr_flags = msr_fields.f;
-				psr_wr_control = msr_fields.c;
-			end
-
-			// WONTFIX: <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=9757>
-			//`GROUP_SWP: ;
-
-			`INSN_SWI: begin
-				swi = 1;
-				dec_data.uses_rn = 0;
-			end
-
-		   /* No es parte de ARMv4 pero U-Boot lo necesita. esto se
-		    * decodifica igual que `mov pc, lr` ya que no tenemos Thumb.
-			*/
-		   `INSN_BXLR: begin
-				dec_data.op = `ALU_MOV;
-				dec_data.rd = `R15;
-				dec_data.uses_rn = 0;
-
-				dec_snd.r = `R14;
-				dec_snd.is_imm = 0;
-
-				writeback = 1;
-			end
-
-`ifdef VERILATOR
-			// No es parte de ARM del todo, es un hack para soportar gdb
-			`INSN_GDB_SWBREAK: begin
-				bkpt = 1;
-				dec_data.uses_rn = 0;
-			end
-`endif
-
-			default:
-				undefined = 1;
-		endcase
-
-		unique casez(insn `FIELD_OP)
-			// Codificación coincide con ldst
-			`GROUP_MUL: ;
-
-			`GROUP_LDST_SINGLE, `GROUP_LDST_MISC, `GROUP_LDST_MULT, `GROUP_LDST_EX: begin
-				ldst = 1;
-				dec_data = data_ldst;
-				writeback = dec_ldst.writeback || dec_ldst.load || dec_ldst.exclusive;
-			end
-
-			default: ;
-		endcase
-
-		if(undefined) begin
-			execute = 0;
-
-			mul = 1'bx;
-			psr = 1'bx;
-			ldst = 1'bx;
-			branch = 1'bx;
-			coproc = 1'bx;
-			writeback = 1'bx;
-			conditional = 1'bx;
-			update_flags = 1'bx;
-
-			dec_snd = {($bits(dec_snd)){1'bx}};
-			dec_data = {($bits(dec_data)){1'bx}};
-			dec_ldst = {($bits(dec_ldst)){1'bx}};
-		end
-	end
-
-endmodule