#!/usr/bin/bash

set -e 

if [ $# -le 1 ]; then
    echo "Usage: generate_isrs.sh <isrs_gen.c> <isrs_gen.inc>"
    exit 1
fi

ISRS_GEN_C=$1
ISRS_GEN_ASM=$2

ISRS_WITH_ERROR_CODE="8 10 11 12 13 14 17 21 29 30"

# C code
echo "// (autogenerated file)" > $ISRS_GEN_C

echo "#include \"idt.h\"" >> $ISRS_GEN_C
echo "#include \"gdt.h\"" >> $ISRS_GEN_C

echo "" >> $ISRS_GEN_C

for i in $(seq 0 255); do
        echo "void __attribute__((cdecl)) i686_ISR${i}();" >> $ISRS_GEN_C
done

echo "" >> $ISRS_GEN_C

echo "void i686_isr_initialize_gates(){" >> $ISRS_GEN_C

for i in $(seq 0 255); do
        echo "    i686_idt_set_gate(${i}, i686_ISR${i}, i686_GDT_CODE_SEGMENT, IDT_FLAG_RING0 | IDT_FLAG_GATE_32BIT_INT);" >> $ISRS_GEN_C
done

echo "}" >> $ISRS_GEN_C

# Asm code
echo "; (autogenerated file)" > $ISRS_GEN_ASM

for i in $(seq 0 255); do
    if echo "$ISRS_WITH_ERROR_CODE" | grep -q "\b${i}\b"; then
        echo "ISR_ERRORCODE ${i}" >> $ISRS_GEN_ASM
    else
        echo "ISR_NOERRORCODE ${i}" >> $ISRS_GEN_ASM
    fi
done