| Line 104... |
Line 104... |
input [3:0] i_daddress_sel,
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input [3:0] i_daddress_sel,
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input [2:0] i_pc_sel,
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input [2:0] i_pc_sel,
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input [1:0] i_byte_enable_sel,
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input [1:0] i_byte_enable_sel,
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input [2:0] i_status_bits_sel,
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input [2:0] i_status_bits_sel,
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input [2:0] i_reg_write_sel,
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input [2:0] i_reg_write_sel,
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// input i_user_mode_regs_load,
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input i_user_mode_regs_store_nxt,
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input i_user_mode_regs_store_nxt,
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input i_firq_not_user_mode,
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input i_firq_not_user_mode,
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input i_use_carry_in, // e.g. add with carry instruction
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input i_write_data_wen,
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input i_write_data_wen,
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input i_base_address_wen, // save LDM base address register,
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input i_base_address_wen, // save LDM base address register,
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// in case of data abort
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// in case of data abort
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input i_pc_wen,
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input i_pc_wen,
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| Line 212... |
Line 212... |
wire [31:0] save_int_pc;
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wire [31:0] save_int_pc;
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wire [31:0] save_int_pc_m4;
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wire [31:0] save_int_pc_m4;
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wire ldm_flags;
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wire ldm_flags;
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wire ldm_status_bits;
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wire ldm_status_bits;
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wire carry_in;
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// ========================================================
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// ========================================================
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// Status Bits in PC register
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// Status Bits in PC register
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// ========================================================
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// ========================================================
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wire [1:0] status_bits_mode_out;
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wire [1:0] status_bits_mode_out;
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assign status_bits_mode_out = (i_status_bits_mode_wen && i_status_bits_sel == 3'd1 && !ldm_status_bits) ?
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assign status_bits_mode_out = (i_status_bits_mode_wen && i_status_bits_sel == 3'd1 && !ldm_status_bits) ?
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| Line 556... |
Line 559... |
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// ========================================================
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// ========================================================
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// Instantiate Barrel Shift
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// Instantiate Barrel Shift
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// ========================================================
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// ========================================================
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assign carry_in = i_use_carry_in ? status_bits_flags[1] : 1'd0;
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a25_barrel_shift u_barrel_shift (
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a25_barrel_shift u_barrel_shift (
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.i_clk ( i_clk ),
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.i_clk ( i_clk ),
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.i_in ( barrel_shift_in ),
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.i_in ( barrel_shift_in ),
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.i_carry_in ( status_bits_flags[1] ),
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.i_carry_in ( carry_in ),
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.i_shift_amount ( shift_amount ),
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.i_shift_amount ( shift_amount ),
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.i_shift_imm_zero ( i_shift_imm_zero ),
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.i_shift_imm_zero ( i_shift_imm_zero ),
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.i_function ( i_barrel_shift_function ),
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.i_function ( i_barrel_shift_function ),
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.o_out ( barrel_shift_out ),
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.o_out ( barrel_shift_out ),
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