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https://opencores.org/ocsvn/neorv32/neorv32/trunk
[/] [neorv32/] [trunk/] [rtl/] [core/] [neorv32_cpu_decompressor.vhd] - Diff between revs 53 and 58
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| Rev 53 |
Rev 58 |
| Line 79... |
Line 79... |
begin
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begin
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-- defaults --
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-- defaults --
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ci_illegal_o <= '0';
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ci_illegal_o <= '0';
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ci_instr32_o <= (others => '0');
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ci_instr32_o <= (others => '0');
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-- 22-bit sign-extended immediate for J/JAL --
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-- helper: 22-bit sign-extended immediate for J/JAL --
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imm20_v := (others => ci_instr16_i(12)); -- sign extension
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imm20_v := (others => ci_instr16_i(12)); -- sign extension
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imm20_v(00):= '0';
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imm20_v(00):= '0';
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imm20_v(01):= ci_instr16_i(3);
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imm20_v(01):= ci_instr16_i(3);
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imm20_v(02):= ci_instr16_i(4);
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imm20_v(02):= ci_instr16_i(4);
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imm20_v(03):= ci_instr16_i(5);
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imm20_v(03):= ci_instr16_i(5);
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| Line 94... |
Line 94... |
imm20_v(08):= ci_instr16_i(9);
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imm20_v(08):= ci_instr16_i(9);
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imm20_v(09):= ci_instr16_i(10);
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imm20_v(09):= ci_instr16_i(10);
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imm20_v(10):= ci_instr16_i(8);
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imm20_v(10):= ci_instr16_i(8);
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imm20_v(11):= ci_instr16_i(12);
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imm20_v(11):= ci_instr16_i(12);
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-- 12-bit sign-extended immediate for branches --
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-- helper: 12-bit sign-extended immediate for branches --
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imm12_v := (others => ci_instr16_i(12)); -- sign extension
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imm12_v := (others => ci_instr16_i(12)); -- sign extension
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imm12_v(00):= '0';
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imm12_v(00):= '0';
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imm12_v(01):= ci_instr16_i(3);
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imm12_v(01):= ci_instr16_i(3);
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imm12_v(02):= ci_instr16_i(4);
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imm12_v(02):= ci_instr16_i(4);
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imm12_v(03):= ci_instr16_i(10);
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imm12_v(03):= ci_instr16_i(10);
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