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Make asmproc produce a linkable obj

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Document compile.sh
This commit is contained in:
hondew
2021-03-14 23:46:12 -04:00
parent 4a15dea90f
commit 19651447d5
4 changed files with 33 additions and 25 deletions
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12
tools/asm_processor/asm_processor.py
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@@ -575,7 +575,7 @@ class GlobalAsmBlock:
self.add_sized(int(line.split()[1], 0), real_line)
elif line.startswith('.balign') or line.startswith('.align'):
align = int(line.split()[1])
if align != 2:
if align != 4:
self.fail("only .balign 4 is supported", real_line)
self.align4()
elif line.startswith('.asci'):
@@ -586,9 +586,6 @@ class GlobalAsmBlock:
# Branches are 4 bytes long
elif line.startswith('bl'):
self.add_sized(4, real_line)
elif line.startswith('.'):
# .macro, ...
self.fail("asm directive not supported", real_line)
else:
# Unfortunately, macros are hard to support for .rodata --
# we don't know how how space they will expand to before
@@ -1027,8 +1024,11 @@ def fixup_objfile(objfile_name, functions, asm_prelude, assembler, output_enc):
loc1 = asm_objfile.symtab.find_symbol_in_section(temp_name + '_asm_start', source)
loc2 = asm_objfile.symtab.find_symbol_in_section(temp_name + '_asm_end', source)
assert loc1 == pos, "assembly and C files don't line up for section " + sectype + ", " + fn_desc
if loc2 - loc1 != count:
raise Failure("incorrectly computed size for section " + sectype + ", " + fn_desc + ". If using .double, make sure to provide explicit alignment padding.")
# Since we are nonmatching whole functions, we don't need to insert the correct
# amount of padding into the src file. We don't actually need to insert padding
# at all. We can just plop the asm's text section into the objfile.
# if loc2 - loc1 != count:
# raise Failure("incorrectly computed size for section " + sectype + ", " + fn_desc + ". If using .double, make sure to provide explicit alignment padding.")
if sectype == '.bss' or sectype == '.sbss2':
continue
target = objfile.find_section(sectype, n_text if sectype == '.text' else 0)