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-rw-r--r--rtl/core/control/control.sv19
-rw-r--r--rtl/core/control/exception.sv28
2 files changed, 37 insertions, 10 deletions
diff --git a/rtl/core/control/control.sv b/rtl/core/control/control.sv
index ec8f773..cc8f160 100644
--- a/rtl/core/control/control.sv
+++ b/rtl/core/control/control.sv
@@ -54,20 +54,14 @@ module core_control
coproc
);
- logic ldst, ldst_pre, ldst_increment,
- ldst_writeback, pop_valid, exception, high_vectors;
-
- logic[2:0] vector_offset;
- word mem_offset, vector;
+ logic ldst, ldst_pre, ldst_increment, ldst_writeback, pop_valid;
+ word mem_offset;
reg_num r_shift, popped_upper, popped_lower, popped;
reg_list mem_regs, next_regs_upper, next_regs_lower;
assign reg_mode = `MODE_SVC; //TODO
assign mem_data_wr = rd_value_b;
assign popped = ldst_increment ? popped_lower : popped_upper;
- assign exception = undefined; //TODO
- assign high_vectors = 0; //TODO
- assign vector = {{16{high_vectors}}, 11'b0, vector_offset, 2'b00};
ctrl_cycle cycle, next_cycle;
@@ -122,8 +116,13 @@ module core_control
.*
);
- always_comb
- vector_offset = 3'b001; //TODO
+ word vector;
+ logic exception;
+
+ core_control_exception ctrl_exc
+ (
+ .*
+ );
always_ff @(posedge clk) begin
wb_alu_flags <= alu_flags;
diff --git a/rtl/core/control/exception.sv b/rtl/core/control/exception.sv
new file mode 100644
index 0000000..9a64cd5
--- /dev/null
+++ b/rtl/core/control/exception.sv
@@ -0,0 +1,28 @@
+`include "core/uarch.sv"
+
+module core_control_exception
+(
+ input logic clk,
+
+ input logic undefined,
+
+ output word vector,
+ output logic exception
+);
+
+ logic high_vectors;
+ logic[2:0] vector_offset;
+
+ assign exception = undefined; //TODO
+ assign high_vectors = 0; //TODO
+ assign vector = {{16{high_vectors}}, 11'b0, vector_offset, 2'b00};
+
+ always_comb
+ vector_offset = 3'b001; //TODO
+
+ //TODO: spsr_<mode> = cpsr
+ //TODO: actualizar modo
+ //TODO: deshabilitar IRQs/FIQs dependiendo de modo
+ //TODO: Considerar que data abort usa + 8, no + 4
+
+endmodule