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adapter-bigbang: reduce amount of xfer instruction. #70

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adapter-bigbang: reduce amount of xfer instruction. #70

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8 changes: 3 additions & 5 deletions adapter-bitbang.c
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Original file line number Diff line number Diff line change
Expand Up @@ -765,19 +765,17 @@ static void bitbang_load_executive(adapter_t *adapter,
/* Step 5. */
unsigned opcode1 = 0x3c060000 | pic32_pe_loader[i];
unsigned opcode2 = 0x34c60000 | pic32_pe_loader[i+1];
unsigned opcode3 = 0xac860000 | (i * 2);

xfer_instruction(a, opcode1); // lui a2, PE_loader_hi++
xfer_instruction(a, opcode2); // ori a2, PE_loader_lo++
xfer_instruction(a, 0xac860000); // sw a2, 0(a0)
xfer_instruction(a, 0x24840004); // addiu a0, 4
xfer_instruction(a, opcode3); // sw a2, PE_offset(a0)
}
printf(" 5");
fflush(stdout);

/* Jump to PE loader (step 6). */
xfer_instruction(a, 0x3c19a000); // lui t9, 0xa000
xfer_instruction(a, 0x37390800); // ori t9, 0x800 - t9 has a0000800
xfer_instruction(a, 0x03200008); // jr t9
xfer_instruction(a, 0x00800008); // jr a0
xfer_instruction(a, 0x00000000); // nop
printf(" 6");
fflush(stdout);
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