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Added glabels with upper/lower parts used <= 15 instructions apart.

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This commit is contained in:
Antonio Castelli
2021-05-30 14:27:01 -07:00
parent a72a063b79
commit 22d8de46c8
14 changed files with 33 additions and 26 deletions
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tools/python/find_glabels.py
+6 -2
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@@ -2,13 +2,17 @@ import re
from file_util import FileUtil
# Maximum number of lines between a glabel's upper/lower usage to look for.
MAX_LINE_DIFF = 10
LINE_START_REGEX = r'\n(/\* ([0-9A-F]{6}) [0-9A-F]{8} [0-9A-F]{8} \*/\s+|\.L80[0-9A-F]{6}:)?'
REG_REGEX = r'(\$(at|v[0-1]|a[0-3]|t[0-9]|s[0-7]|f[0-9]{1,2}|k[01]|gp|sp|fp|ra|zero))'
GLABEL_UPPER_REGEX = '(' + LINE_START_REGEX + r'lui\s+' + REG_REGEX + r',\s+(0x80[0-9a-f]{2}))'
GLABEL_LOWER_LS_REGEX = r'[sl][bhwd](u|c1)?\s+' + REG_REGEX + r',\s+(-?0x[0-9a-f]{3,4})\(\4\)'
GLABEL_LOWER_ADDU_REGEX = r'addiu\s+' + REG_REGEX + r',\s+\4,\s+(-?0x[0-9a-f]{3,4})'
GLABEL_LOWER_REGEX = LINE_START_REGEX + '(' + GLABEL_LOWER_LS_REGEX + '|' + GLABEL_LOWER_ADDU_REGEX + ')'
GLABEL_REGEX = GLABEL_UPPER_REGEX + '(' + LINE_START_REGEX + '[^\n]*){0,10}' + GLABEL_LOWER_REGEX
GLABEL_REGEX_STR = GLABEL_UPPER_REGEX + '(' + LINE_START_REGEX + '[^\n]*){0,' + str(MAX_LINE_DIFF) + '}' + GLABEL_LOWER_REGEX
GLABEL_REGEX = re.compile(GLABEL_REGEX_STR)
UPPER_INSTR_REGEX_TMPL = r'(/\* %s[^\n#]*lui\s+)([^\n]*)'
LOWER_INSTR_LS_REGEX_TMPL = r'(/\* %s[^\n#]*[ls][bhwd](u|c1)?\s+' + REG_REGEX + r',\s+)-?0x[0-9a-f]{3,4}([^\n]*)'
@@ -22,7 +26,7 @@ def _find_glabels(asm):
for file in FileUtil.get_filenames_from_directory_recursive('.', '.s'):
#'''
contents = FileUtil.get_text_from_file(file)
matches = re.findall(GLABEL_REGEX, contents)
matches = GLABEL_REGEX.findall(contents)
for match in matches:
reg = match[3]
offsets = (match[2], match[10]) # ROM offsets of the lui and [sl][bhw]