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Do not wait for PCPI core when handling SCALL and SBREAK

This commit is contained in:
Clifford Wolf 2016-06-01 11:57:04 +02:00
parent 38d51a3383
commit fd18475e23
1 changed files with 6 additions and 6 deletions
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10
picorv32.v
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@ -502,7 +502,7 @@ module picorv32 #(
reg instr_lb, instr_lh, instr_lw, instr_lbu, instr_lhu, instr_sb, instr_sh, instr_sw;
reg instr_addi, instr_slti, instr_sltiu, instr_xori, instr_ori, instr_andi, instr_slli, instr_srli, instr_srai;
reg instr_add, instr_sub, instr_sll, instr_slt, instr_sltu, instr_xor, instr_srl, instr_sra, instr_or, instr_and;
reg instr_rdcycle, instr_rdcycleh, instr_rdinstr, instr_rdinstrh, instr_sbreak;
reg instr_rdcycle, instr_rdcycleh, instr_rdinstr, instr_rdinstrh, instr_scall_sbreak;
reg instr_getq, instr_setq, instr_retirq, instr_maskirq, instr_waitirq, instr_timer;
wire instr_trap;
@ -918,7 +918,7 @@ module picorv32 #(
instr_rdinstr <= (mem_rdata_q[6:0] == 7'b1110011 && mem_rdata_q[31:12] == 'b11000000001000000010) && ENABLE_COUNTERS;
instr_rdinstrh <= (mem_rdata_q[6:0] == 7'b1110011 && mem_rdata_q[31:12] == 'b11001000001000000010) && ENABLE_COUNTERS && ENABLE_COUNTERS64;
instr_sbreak <= !CATCH_ILLINSN && ((mem_rdata_q[6:0] == 7'b1110011 && mem_rdata_q[31:7] == 'b0000000000010000000000000) ||
instr_scall_sbreak <= ((mem_rdata_q[6:0] == 7'b1110011 && !mem_rdata_q[31:21] && !mem_rdata_q[19:7]) ||
(COMPRESSED_ISA && mem_rdata_q[15:0] == 16'h9002));
instr_getq <= mem_rdata_q[6:0] == 7'b0001011 && mem_rdata_q[31:25] == 7'b0000000 && ENABLE_IRQ && ENABLE_IRQ_QREGS;
@ -1269,7 +1269,7 @@ module picorv32 #(
latched_store <= pcpi_int_wr;
cpu_state <= cpu_state_fetch;
end else
if (CATCH_ILLINSN && pcpi_timeout) begin
if (CATCH_ILLINSN && (pcpi_timeout || instr_scall_sbreak)) begin
pcpi_valid <= 0;
`debug($display("SBREAK OR UNSUPPORTED INSN AT 0x%08x", reg_pc);)
if (ENABLE_IRQ && !irq_mask[irq_sbreak] && !irq_active) begin
@ -1419,7 +1419,7 @@ module picorv32 #(
latched_store <= pcpi_int_wr;
cpu_state <= cpu_state_fetch;
end else
if (CATCH_ILLINSN && pcpi_timeout) begin
if (CATCH_ILLINSN && (pcpi_timeout || instr_scall_sbreak)) begin
pcpi_valid <= 0;
`debug($display("SBREAK OR UNSUPPORTED INSN AT 0x%08x", reg_pc);)
if (ENABLE_IRQ && !irq_mask[irq_sbreak] && !irq_active) begin
@ -1570,7 +1570,7 @@ module picorv32 #(
end else
cpu_state <= cpu_state_trap;
end
if (!CATCH_ILLINSN && decoder_trigger_q && !decoder_pseudo_trigger_q && instr_sbreak) begin
if (!CATCH_ILLINSN && decoder_trigger_q && !decoder_pseudo_trigger_q && instr_scall_sbreak) begin
cpu_state <= cpu_state_trap;
end