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| author | Jason Molenda <jmolenda@apple.com> | 1999-05-25 18:09:09 +0000 |
|---|---|---|
| committer | Jason Molenda <jmolenda@apple.com> | 1999-05-25 18:09:09 +0000 |
| commit | 392a587b0562bfd8561bc15ad2625a4f49f461f0 (patch) | |
| tree | 933e0970b7845c901c7ea3e128fa9cb0dcf9fe14 /gdb/m68k-tdep.c | |
| parent | 751d21b5b946a4a451552fbac692b14abea3d816 (diff) | |
| download | gdb-392a587b0562bfd8561bc15ad2625a4f49f461f0.zip gdb-392a587b0562bfd8561bc15ad2625a4f49f461f0.tar.gz gdb-392a587b0562bfd8561bc15ad2625a4f49f461f0.tar.bz2 | |
import gdb-1999-05-25 snapshot
Diffstat (limited to 'gdb/m68k-tdep.c')
| -rw-r--r-- | gdb/m68k-tdep.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/gdb/m68k-tdep.c b/gdb/m68k-tdep.c index 56e5552..769ffe8 100644 --- a/gdb/m68k-tdep.c +++ b/gdb/m68k-tdep.c @@ -72,6 +72,77 @@ isi_skip_prologue (pc) return pc; } +/* Return number of args passed to a frame. + Can return -1, meaning no way to tell. */ + +int +isi_frame_num_args (fi) + struct frame_info *fi; +{ + int val; + CORE_ADDR pc = FRAME_SAVED_PC (fi); + int insn = 0177777 & read_memory_integer (pc, 2); + val = 0; + if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */ + val = read_memory_integer (pc + 2, 2); + else if ((insn & 0170777) == 0050217 /* addql #N, sp */ + || (insn & 0170777) == 0050117) /* addqw */ + { + val = (insn >> 9) & 7; + if (val == 0) + val = 8; + } + else if (insn == 0157774) /* addal #WW, sp */ + val = read_memory_integer (pc + 2, 4); + val >>= 2; + return val; +} + +int +delta68_frame_num_args (fi) + struct frame_info *fi; +{ + int val; + CORE_ADDR pc = FRAME_SAVED_PC (fi); + int insn = 0177777 & read_memory_integer (pc, 2); + val = 0; + if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */ + val = read_memory_integer (pc + 2, 2); + else if ((insn & 0170777) == 0050217 /* addql #N, sp */ + || (insn & 0170777) == 0050117) /* addqw */ + { + val = (insn >> 9) & 7; + if (val == 0) + val = 8; + } + else if (insn == 0157774) /* addal #WW, sp */ + val = read_memory_integer (pc + 2, 4); + val >>= 2; + return val; +} + +int +news_frame_num_args (fi) + struct frame_info *fi; +{ + int val; + CORE_ADDR pc = FRAME_SAVED_PC (fi); + int insn = 0177777 & read_memory_integer (pc, 2); + val = 0; + if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */ + val = read_memory_integer (pc + 2, 2); + else if ((insn & 0170777) == 0050217 /* addql #N, sp */ + || (insn & 0170777) == 0050117) /* addqw */ + { + val = (insn >> 9) & 7; + if (val == 0) + val = 8; + } + else if (insn == 0157774) /* addal #WW, sp */ + val = read_memory_integer (pc + 2, 4); + val >>= 2; + return val; +} /* Push an empty stack frame, to record the current PC, etc. */ |