diff options
Diffstat (limited to 'gdb/alpha-osf1-tdep.c')
| -rw-r--r-- | gdb/alpha-osf1-tdep.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gdb/alpha-osf1-tdep.c b/gdb/alpha-osf1-tdep.c index 4eaa3c4..26e1790 100644 --- a/gdb/alpha-osf1-tdep.c +++ b/gdb/alpha-osf1-tdep.c @@ -53,6 +53,30 @@ alpha_osf1_sigcontext_addr (struct frame_info *frame) : frame->frame, 8)); } +/* This is the definition of CALL_DUMMY_ADDRESS. It's a heuristic that is used + to find a convenient place in the text segment to stick a breakpoint to + detect the completion of a target function call (ala call_function_by_hand). + */ + +static CORE_ADDR +alpha_call_dummy_address (void) +{ + CORE_ADDR entry; + struct minimal_symbol *sym; + + entry = entry_point_address (); + + if (entry != 0) + return entry; + + sym = lookup_minimal_symbol ("_Prelude", NULL, symfile_objfile); + + if (!sym || MSYMBOL_TYPE (sym) != mst_text) + return 0; + else + return SYMBOL_VALUE_ADDRESS (sym) + 4; +} + static void alpha_osf1_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) @@ -65,6 +89,11 @@ alpha_osf1_init_abi (struct gdbarch_info info, instead. */ set_gdbarch_software_single_step (gdbarch, alpha_software_single_step); + /* Alpha OSF/1 inhibits execution of code on the stack. But there is + no need for a dummy on the Alpha. PUSH_ARGUMENTS takes care of all + argument handling and bp_call_dummy takes care of stopping the dummy. */ + set_gdbarch_call_dummy_address (gdbarch, alpha_call_dummy_address); + tdep->skip_sigtramp_frame = alpha_osf1_skip_sigtramp_frame; tdep->sigcontext_addr = alpha_osf1_sigcontext_addr; |