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Diffstat (limited to 'gnu/gas/NOTES')
| -rw-r--r-- | gnu/gas/NOTES | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/gnu/gas/NOTES b/gnu/gas/NOTES deleted file mode 100644 index b3f3f92d2ef7..000000000000 --- a/gnu/gas/NOTES +++ /dev/null @@ -1,35 +0,0 @@ -gdb debugging of assembly sources: - write a function linestab() that generates a .stabd symbol - independently of the input - write a function filestab() to generate a .stabs symbol - we need to take especial care with #line directives - since we want to handle locore, and locore is passed thru cpp - this could be tough - outline of a solution: - cpp sends us lines of the form - # logical-line "logical-file" trash - these lines are interpreted ahead of the gas preprocess pass - in the starting state, the logical filename is the same - as the real filename (in case there're no #lines) - the initial logical line number is 1 - every time we're ready to process a new instruction line, - if the source file has changed, - emit a .stabs for the logical file - emit a .stabd for the logical line - bump the logical line number - can gas eat multiple actual lines in one insn? - -i386 nits: - jmp *$foo produces a short relative branch - string quotes in comments - Bill says gas eats text across newlines to find matches - works fine for me - I think it's most likely due to cpp - make / no longer be a comment char - it's now like the VAX: # is the only comment char - incorrectly assembles lcall, int3, into, bsr/f instructions - constant expressions fail if more than a few terms - gives (low+2)*3+4*5 as an example - works fine for me - cpp seems to think $ is a valid literal - use -$ in /usr/bin/cpp |