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Support preserved registers as identifiers

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… in expressions
This commit is contained in:
Eugen Wissner
2025-04-29 23:08:46 +02:00
parent 9c66cec171
commit 23b7a1ab30
6 changed files with 851 additions and 503 deletions
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181
boot/tokenizer.s Normal file
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.global _tokenizer_initialize
.section .rodata
raw_classes:
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "space\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "digit\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "upper\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "lower\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.ascii "invalid\n"
.section .bss
.type class_names, @object
.size class_names, 1024
class_names: .zero 1024
.section .data
.type classes, @object
.size classes, 512 # 128 characters * 4 byte.
classes:
.section .text
# Initializes the classification table.
#
# Paramaters:
# a0 - Raw input for the classification table.
.type _tokenizer_classes, @function
_tokenizer_classes:
# Prologue.
addi sp, sp, -8
sw ra, 4(sp)
sw s0, 0(sp)
addi s0, sp, 8
# Epilogue.
lw ra, 4(sp)
lw s0, 0(sp)
addi sp, sp, 8
ret
# Initializes the lookup tables.
.type _tokenizer_initialize, @function
_tokenizer_initialize:
# Prologue.
addi sp, sp, -8
sw ra, 4(sp)
sw s0, 0(sp)
addi s0, sp, 8
la a0, raw_classes
call _tokenizer_classes
# Epilogue.
lw ra, 4(sp)
lw s0, 0(sp)
addi sp, sp, 8
ret