| /* Target-dependent code for HPUX running on PA-RISC, for GDB. |
| |
| Copyright 2002, 2003 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include "arch-utils.h" |
| #include "gdbcore.h" |
| #include "osabi.h" |
| #include "gdb_string.h" |
| #include "frame.h" |
| #include "symtab.h" |
| #include "objfiles.h" |
| #include "inferior.h" |
| #include "infcall.h" |
| #include "hppa-tdep.h" |
| |
| #include <dl.h> |
| #include <machine/save_state.h> |
| |
| /* Forward declarations. */ |
| extern void _initialize_hppa_hpux_tdep (void); |
| extern initialize_file_ftype _initialize_hppa_hpux_tdep; |
| |
| typedef struct |
| { |
| struct minimal_symbol *msym; |
| CORE_ADDR solib_handle; |
| CORE_ADDR return_val; |
| } |
| args_for_find_stub; |
| |
| /* FIXME: brobecker 2002-12-25. The following functions will eventually |
| become static, after the multiarching conversion is done. */ |
| int hppa_hpux_pc_in_sigtramp (CORE_ADDR pc, char *name); |
| void hppa32_hpux_frame_saved_pc_in_sigtramp (struct frame_info *fi, |
| CORE_ADDR *tmp); |
| void hppa32_hpux_frame_base_before_sigtramp (struct frame_info *fi, |
| CORE_ADDR *tmp); |
| void hppa32_hpux_frame_find_saved_regs_in_sigtramp (struct frame_info *fi, |
| CORE_ADDR *fsr); |
| void hppa64_hpux_frame_saved_pc_in_sigtramp (struct frame_info *fi, |
| CORE_ADDR *tmp); |
| void hppa64_hpux_frame_base_before_sigtramp (struct frame_info *fi, |
| CORE_ADDR *tmp); |
| void hppa64_hpux_frame_find_saved_regs_in_sigtramp (struct frame_info *fi, |
| CORE_ADDR *fsr); |
| |
| int |
| hppa_hpux_pc_in_sigtramp (CORE_ADDR pc, char *name) |
| { |
| /* Actually, for a PA running HPUX the kernel calls the signal handler |
| without an intermediate trampoline. Luckily the kernel always sets |
| the return pointer for the signal handler to point to _sigreturn. */ |
| return (name && (strcmp ("_sigreturn", name) == 0)); |
| } |
| |
| /* For hppa32_hpux_frame_saved_pc_in_sigtramp, |
| hppa32_hpux_frame_base_before_sigtramp and |
| hppa32_hpux_frame_find_saved_regs_in_sigtramp: |
| |
| The signal context structure pointer is always saved at the base |
| of the frame which "calls" the signal handler. We only want to find |
| the hardware save state structure, which lives 10 32bit words into |
| sigcontext structure. |
| |
| Within the hardware save state structure, registers are found in the |
| same order as the register numbers in GDB. |
| |
| At one time we peeked at %r31 rather than the PC queues to determine |
| what instruction took the fault. This was done on purpose, but I don't |
| remember why. Looking at the PC queues is really the right way, and |
| I don't remember why that didn't work when this code was originally |
| written. */ |
| |
| void |
| hppa32_hpux_frame_saved_pc_in_sigtramp (struct frame_info *fi, CORE_ADDR *tmp) |
| { |
| *tmp = read_memory_integer (get_frame_base (fi) + (43 * 4), 4); |
| } |
| |
| void |
| hppa32_hpux_frame_base_before_sigtramp (struct frame_info *fi, |
| CORE_ADDR *tmp) |
| { |
| *tmp = read_memory_integer (get_frame_base (fi) + (40 * 4), 4); |
| } |
| |
| void |
| hppa32_hpux_frame_find_saved_regs_in_sigtramp (struct frame_info *fi, |
| CORE_ADDR *fsr) |
| { |
| int i; |
| const CORE_ADDR tmp = get_frame_base (fi) + (10 * 4); |
| |
| for (i = 0; i < NUM_REGS; i++) |
| { |
| if (i == HPPA_SP_REGNUM) |
| fsr[HPPA_SP_REGNUM] = read_memory_integer (tmp + HPPA_SP_REGNUM * 4, 4); |
| else |
| fsr[i] = tmp + i * 4; |
| } |
| } |
| |
| /* For hppa64_hpux_frame_saved_pc_in_sigtramp, |
| hppa64_hpux_frame_base_before_sigtramp and |
| hppa64_hpux_frame_find_saved_regs_in_sigtramp: |
| |
| These functions are the PA64 ABI equivalents of the 32bits counterparts |
| above. See the comments there. |
| |
| For PA64, the save_state structure is at an offset of 24 32-bit words |
| from the sigcontext structure. The 64 bit general registers are at an |
| offset of 640 bytes from the beginning of the save_state structure, |
| and the floating pointer register are at an offset of 256 bytes from |
| the beginning of the save_state structure. */ |
| |
| void |
| hppa64_hpux_frame_saved_pc_in_sigtramp (struct frame_info *fi, CORE_ADDR *tmp) |
| { |
| *tmp = read_memory_integer |
| (get_frame_base (fi) + (24 * 4) + 640 + (33 * 8), 8); |
| } |
| |
| void |
| hppa64_hpux_frame_base_before_sigtramp (struct frame_info *fi, |
| CORE_ADDR *tmp) |
| { |
| *tmp = read_memory_integer |
| (get_frame_base (fi) + (24 * 4) + 640 + (30 * 8), 8); |
| } |
| |
| void |
| hppa64_hpux_frame_find_saved_regs_in_sigtramp (struct frame_info *fi, |
| CORE_ADDR *fsr) |
| { |
| int i; |
| const CORE_ADDR tmp1 = get_frame_base (fi) + (24 * 4) + 640; |
| const CORE_ADDR tmp2 = get_frame_base (fi) + (24 * 4) + 256; |
| |
| for (i = 0; i < NUM_REGS; i++) |
| { |
| if (i == HPPA_SP_REGNUM) |
| fsr[HPPA_SP_REGNUM] = read_memory_integer (tmp1 + HPPA_SP_REGNUM * 8, 8); |
| else if (i >= HPPA_FP0_REGNUM) |
| fsr[i] = tmp2 + (i - HPPA_FP0_REGNUM) * 8; |
| else |
| fsr[i] = tmp1 + i * 8; |
| } |
| } |
| |
| /* Return one if PC is in the call path of a trampoline, else return zero. |
| |
| Note we return one for *any* call trampoline (long-call, arg-reloc), not |
| just shared library trampolines (import, export). */ |
| |
| static int |
| hppa32_hpux_in_solib_call_trampoline (CORE_ADDR pc, char *name) |
| { |
| struct minimal_symbol *minsym; |
| struct unwind_table_entry *u; |
| static CORE_ADDR dyncall = 0; |
| static CORE_ADDR sr4export = 0; |
| |
| /* FIXME XXX - dyncall and sr4export must be initialized whenever we get a |
| new exec file */ |
| |
| /* First see if PC is in one of the two C-library trampolines. */ |
| if (!dyncall) |
| { |
| minsym = lookup_minimal_symbol ("$$dyncall", NULL, NULL); |
| if (minsym) |
| dyncall = SYMBOL_VALUE_ADDRESS (minsym); |
| else |
| dyncall = -1; |
| } |
| |
| if (!sr4export) |
| { |
| minsym = lookup_minimal_symbol ("_sr4export", NULL, NULL); |
| if (minsym) |
| sr4export = SYMBOL_VALUE_ADDRESS (minsym); |
| else |
| sr4export = -1; |
| } |
| |
| if (pc == dyncall || pc == sr4export) |
| return 1; |
| |
| minsym = lookup_minimal_symbol_by_pc (pc); |
| if (minsym && strcmp (DEPRECATED_SYMBOL_NAME (minsym), ".stub") == 0) |
| return 1; |
| |
| /* Get the unwind descriptor corresponding to PC, return zero |
| if no unwind was found. */ |
| u = find_unwind_entry (pc); |
| if (!u) |
| return 0; |
| |
| /* If this isn't a linker stub, then return now. */ |
| if (u->stub_unwind.stub_type == 0) |
| return 0; |
| |
| /* By definition a long-branch stub is a call stub. */ |
| if (u->stub_unwind.stub_type == LONG_BRANCH) |
| return 1; |
| |
| /* The call and return path execute the same instructions within |
| an IMPORT stub! So an IMPORT stub is both a call and return |
| trampoline. */ |
| if (u->stub_unwind.stub_type == IMPORT) |
| return 1; |
| |
| /* Parameter relocation stubs always have a call path and may have a |
| return path. */ |
| if (u->stub_unwind.stub_type == PARAMETER_RELOCATION |
| || u->stub_unwind.stub_type == EXPORT) |
| { |
| CORE_ADDR addr; |
| |
| /* Search forward from the current PC until we hit a branch |
| or the end of the stub. */ |
| for (addr = pc; addr <= u->region_end; addr += 4) |
| { |
| unsigned long insn; |
| |
| insn = read_memory_integer (addr, 4); |
| |
| /* Does it look like a bl? If so then it's the call path, if |
| we find a bv or be first, then we're on the return path. */ |
| if ((insn & 0xfc00e000) == 0xe8000000) |
| return 1; |
| else if ((insn & 0xfc00e001) == 0xe800c000 |
| || (insn & 0xfc000000) == 0xe0000000) |
| return 0; |
| } |
| |
| /* Should never happen. */ |
| warning ("Unable to find branch in parameter relocation stub.\n"); |
| return 0; |
| } |
| |
| /* Unknown stub type. For now, just return zero. */ |
| return 0; |
| } |
| |
| static int |
| hppa64_hpux_in_solib_call_trampoline (CORE_ADDR pc, char *name) |
| { |
| /* PA64 has a completely different stub/trampoline scheme. Is it |
| better? Maybe. It's certainly harder to determine with any |
| certainty that we are in a stub because we can not refer to the |
| unwinders to help. |
| |
| The heuristic is simple. Try to lookup the current PC value in th |
| minimal symbol table. If that fails, then assume we are not in a |
| stub and return. |
| |
| Then see if the PC value falls within the section bounds for the |
| section containing the minimal symbol we found in the first |
| step. If it does, then assume we are not in a stub and return. |
| |
| Finally peek at the instructions to see if they look like a stub. */ |
| struct minimal_symbol *minsym; |
| asection *sec; |
| CORE_ADDR addr; |
| int insn, i; |
| |
| minsym = lookup_minimal_symbol_by_pc (pc); |
| if (! minsym) |
| return 0; |
| |
| sec = SYMBOL_BFD_SECTION (minsym); |
| |
| if (bfd_get_section_vma (sec->owner, sec) <= pc |
| && pc < (bfd_get_section_vma (sec->owner, sec) |
| + bfd_section_size (sec->owner, sec))) |
| return 0; |
| |
| /* We might be in a stub. Peek at the instructions. Stubs are 3 |
| instructions long. */ |
| insn = read_memory_integer (pc, 4); |
| |
| /* Find out where we think we are within the stub. */ |
| if ((insn & 0xffffc00e) == 0x53610000) |
| addr = pc; |
| else if ((insn & 0xffffffff) == 0xe820d000) |
| addr = pc - 4; |
| else if ((insn & 0xffffc00e) == 0x537b0000) |
| addr = pc - 8; |
| else |
| return 0; |
| |
| /* Now verify each insn in the range looks like a stub instruction. */ |
| insn = read_memory_integer (addr, 4); |
| if ((insn & 0xffffc00e) != 0x53610000) |
| return 0; |
| |
| /* Now verify each insn in the range looks like a stub instruction. */ |
| insn = read_memory_integer (addr + 4, 4); |
| if ((insn & 0xffffffff) != 0xe820d000) |
| return 0; |
| |
| /* Now verify each insn in the range looks like a stub instruction. */ |
| insn = read_memory_integer (addr + 8, 4); |
| if ((insn & 0xffffc00e) != 0x537b0000) |
| return 0; |
| |
| /* Looks like a stub. */ |
| return 1; |
| } |
| |
| /* Return one if PC is in the return path of a trampoline, else return zero. |
| |
| Note we return one for *any* call trampoline (long-call, arg-reloc), not |
| just shared library trampolines (import, export). */ |
| |
| static int |
| hppa_hpux_in_solib_return_trampoline (CORE_ADDR pc, char *name) |
| { |
| struct unwind_table_entry *u; |
| |
| /* Get the unwind descriptor corresponding to PC, return zero |
| if no unwind was found. */ |
| u = find_unwind_entry (pc); |
| if (!u) |
| return 0; |
| |
| /* If this isn't a linker stub or it's just a long branch stub, then |
| return zero. */ |
| if (u->stub_unwind.stub_type == 0 || u->stub_unwind.stub_type == LONG_BRANCH) |
| return 0; |
| |
| /* The call and return path execute the same instructions within |
| an IMPORT stub! So an IMPORT stub is both a call and return |
| trampoline. */ |
| if (u->stub_unwind.stub_type == IMPORT) |
| return 1; |
| |
| /* Parameter relocation stubs always have a call path and may have a |
| return path. */ |
| if (u->stub_unwind.stub_type == PARAMETER_RELOCATION |
| || u->stub_unwind.stub_type == EXPORT) |
| { |
| CORE_ADDR addr; |
| |
| /* Search forward from the current PC until we hit a branch |
| or the end of the stub. */ |
| for (addr = pc; addr <= u->region_end; addr += 4) |
| { |
| unsigned long insn; |
| |
| insn = read_memory_integer (addr, 4); |
| |
| /* Does it look like a bl? If so then it's the call path, if |
| we find a bv or be first, then we're on the return path. */ |
| if ((insn & 0xfc00e000) == 0xe8000000) |
| return 0; |
| else if ((insn & 0xfc00e001) == 0xe800c000 |
| || (insn & 0xfc000000) == 0xe0000000) |
| return 1; |
| } |
| |
| /* Should never happen. */ |
| warning ("Unable to find branch in parameter relocation stub.\n"); |
| return 0; |
| } |
| |
| /* Unknown stub type. For now, just return zero. */ |
| return 0; |
| |
| } |
| |
| /* Figure out if PC is in a trampoline, and if so find out where |
| the trampoline will jump to. If not in a trampoline, return zero. |
| |
| Simple code examination probably is not a good idea since the code |
| sequences in trampolines can also appear in user code. |
| |
| We use unwinds and information from the minimal symbol table to |
| determine when we're in a trampoline. This won't work for ELF |
| (yet) since it doesn't create stub unwind entries. Whether or |
| not ELF will create stub unwinds or normal unwinds for linker |
| stubs is still being debated. |
| |
| This should handle simple calls through dyncall or sr4export, |
| long calls, argument relocation stubs, and dyncall/sr4export |
| calling an argument relocation stub. It even handles some stubs |
| used in dynamic executables. */ |
| |
| static CORE_ADDR |
| hppa_hpux_skip_trampoline_code (CORE_ADDR pc) |
| { |
| long orig_pc = pc; |
| long prev_inst, curr_inst, loc; |
| static CORE_ADDR dyncall = 0; |
| static CORE_ADDR dyncall_external = 0; |
| static CORE_ADDR sr4export = 0; |
| struct minimal_symbol *msym; |
| struct unwind_table_entry *u; |
| |
| /* FIXME XXX - dyncall and sr4export must be initialized whenever we get a |
| new exec file */ |
| |
| if (!dyncall) |
| { |
| msym = lookup_minimal_symbol ("$$dyncall", NULL, NULL); |
| if (msym) |
| dyncall = SYMBOL_VALUE_ADDRESS (msym); |
| else |
| dyncall = -1; |
| } |
| |
| if (!dyncall_external) |
| { |
| msym = lookup_minimal_symbol ("$$dyncall_external", NULL, NULL); |
| if (msym) |
| dyncall_external = SYMBOL_VALUE_ADDRESS (msym); |
| else |
| dyncall_external = -1; |
| } |
| |
| if (!sr4export) |
| { |
| msym = lookup_minimal_symbol ("_sr4export", NULL, NULL); |
| if (msym) |
| sr4export = SYMBOL_VALUE_ADDRESS (msym); |
| else |
| sr4export = -1; |
| } |
| |
| /* Addresses passed to dyncall may *NOT* be the actual address |
| of the function. So we may have to do something special. */ |
| if (pc == dyncall) |
| { |
| pc = (CORE_ADDR) read_register (22); |
| |
| /* If bit 30 (counting from the left) is on, then pc is the address of |
| the PLT entry for this function, not the address of the function |
| itself. Bit 31 has meaning too, but only for MPE. */ |
| if (pc & 0x2) |
| pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, TARGET_PTR_BIT / 8); |
| } |
| if (pc == dyncall_external) |
| { |
| pc = (CORE_ADDR) read_register (22); |
| pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, TARGET_PTR_BIT / 8); |
| } |
| else if (pc == sr4export) |
| pc = (CORE_ADDR) (read_register (22)); |
| |
| /* Get the unwind descriptor corresponding to PC, return zero |
| if no unwind was found. */ |
| u = find_unwind_entry (pc); |
| if (!u) |
| return 0; |
| |
| /* If this isn't a linker stub, then return now. */ |
| /* elz: attention here! (FIXME) because of a compiler/linker |
| error, some stubs which should have a non zero stub_unwind.stub_type |
| have unfortunately a value of zero. So this function would return here |
| as if we were not in a trampoline. To fix this, we go look at the partial |
| symbol information, which reports this guy as a stub. |
| (FIXME): Unfortunately, we are not that lucky: it turns out that the |
| partial symbol information is also wrong sometimes. This is because |
| when it is entered (somread.c::som_symtab_read()) it can happen that |
| if the type of the symbol (from the som) is Entry, and the symbol is |
| in a shared library, then it can also be a trampoline. This would |
| be OK, except that I believe the way they decide if we are ina shared library |
| does not work. SOOOO..., even if we have a regular function w/o trampolines |
| its minimal symbol can be assigned type mst_solib_trampoline. |
| Also, if we find that the symbol is a real stub, then we fix the unwind |
| descriptor, and define the stub type to be EXPORT. |
| Hopefully this is correct most of the times. */ |
| if (u->stub_unwind.stub_type == 0) |
| { |
| |
| /* elz: NOTE (FIXME!) once the problem with the unwind information is fixed |
| we can delete all the code which appears between the lines */ |
| /*--------------------------------------------------------------------------*/ |
| msym = lookup_minimal_symbol_by_pc (pc); |
| |
| if (msym == NULL || MSYMBOL_TYPE (msym) != mst_solib_trampoline) |
| return orig_pc == pc ? 0 : pc & ~0x3; |
| |
| else if (msym != NULL && MSYMBOL_TYPE (msym) == mst_solib_trampoline) |
| { |
| struct objfile *objfile; |
| struct minimal_symbol *msymbol; |
| int function_found = 0; |
| |
| /* go look if there is another minimal symbol with the same name as |
| this one, but with type mst_text. This would happen if the msym |
| is an actual trampoline, in which case there would be another |
| symbol with the same name corresponding to the real function */ |
| |
| ALL_MSYMBOLS (objfile, msymbol) |
| { |
| if (MSYMBOL_TYPE (msymbol) == mst_text |
| && DEPRECATED_STREQ (DEPRECATED_SYMBOL_NAME (msymbol), DEPRECATED_SYMBOL_NAME (msym))) |
| { |
| function_found = 1; |
| break; |
| } |
| } |
| |
| if (function_found) |
| /* the type of msym is correct (mst_solib_trampoline), but |
| the unwind info is wrong, so set it to the correct value */ |
| u->stub_unwind.stub_type = EXPORT; |
| else |
| /* the stub type info in the unwind is correct (this is not a |
| trampoline), but the msym type information is wrong, it |
| should be mst_text. So we need to fix the msym, and also |
| get out of this function */ |
| { |
| MSYMBOL_TYPE (msym) = mst_text; |
| return orig_pc == pc ? 0 : pc & ~0x3; |
| } |
| } |
| |
| /*--------------------------------------------------------------------------*/ |
| } |
| |
| /* It's a stub. Search for a branch and figure out where it goes. |
| Note we have to handle multi insn branch sequences like ldil;ble. |
| Most (all?) other branches can be determined by examining the contents |
| of certain registers and the stack. */ |
| |
| loc = pc; |
| curr_inst = 0; |
| prev_inst = 0; |
| while (1) |
| { |
| /* Make sure we haven't walked outside the range of this stub. */ |
| if (u != find_unwind_entry (loc)) |
| { |
| warning ("Unable to find branch in linker stub"); |
| return orig_pc == pc ? 0 : pc & ~0x3; |
| } |
| |
| prev_inst = curr_inst; |
| curr_inst = read_memory_integer (loc, 4); |
| |
| /* Does it look like a branch external using %r1? Then it's the |
| branch from the stub to the actual function. */ |
| if ((curr_inst & 0xffe0e000) == 0xe0202000) |
| { |
| /* Yup. See if the previous instruction loaded |
| a value into %r1. If so compute and return the jump address. */ |
| if ((prev_inst & 0xffe00000) == 0x20200000) |
| return (hppa_extract_21 (prev_inst) + hppa_extract_17 (curr_inst)) & ~0x3; |
| else |
| { |
| warning ("Unable to find ldil X,%%r1 before ble Y(%%sr4,%%r1)."); |
| return orig_pc == pc ? 0 : pc & ~0x3; |
| } |
| } |
| |
| /* Does it look like a be 0(sr0,%r21)? OR |
| Does it look like a be, n 0(sr0,%r21)? OR |
| Does it look like a bve (r21)? (this is on PA2.0) |
| Does it look like a bve, n(r21)? (this is also on PA2.0) |
| That's the branch from an |
| import stub to an export stub. |
| |
| It is impossible to determine the target of the branch via |
| simple examination of instructions and/or data (consider |
| that the address in the plabel may be the address of the |
| bind-on-reference routine in the dynamic loader). |
| |
| So we have try an alternative approach. |
| |
| Get the name of the symbol at our current location; it should |
| be a stub symbol with the same name as the symbol in the |
| shared library. |
| |
| Then lookup a minimal symbol with the same name; we should |
| get the minimal symbol for the target routine in the shared |
| library as those take precedence of import/export stubs. */ |
| if ((curr_inst == 0xe2a00000) || |
| (curr_inst == 0xe2a00002) || |
| (curr_inst == 0xeaa0d000) || |
| (curr_inst == 0xeaa0d002)) |
| { |
| struct minimal_symbol *stubsym, *libsym; |
| |
| stubsym = lookup_minimal_symbol_by_pc (loc); |
| if (stubsym == NULL) |
| { |
| warning ("Unable to find symbol for 0x%lx", loc); |
| return orig_pc == pc ? 0 : pc & ~0x3; |
| } |
| |
| libsym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (stubsym), NULL, NULL); |
| if (libsym == NULL) |
| { |
| warning ("Unable to find library symbol for %s\n", |
| DEPRECATED_SYMBOL_NAME (stubsym)); |
| return orig_pc == pc ? 0 : pc & ~0x3; |
| } |
| |
| return SYMBOL_VALUE (libsym); |
| } |
| |
| /* Does it look like bl X,%rp or bl X,%r0? Another way to do a |
| branch from the stub to the actual function. */ |
| /*elz */ |
| else if ((curr_inst & 0xffe0e000) == 0xe8400000 |
| || (curr_inst & 0xffe0e000) == 0xe8000000 |
| || (curr_inst & 0xffe0e000) == 0xe800A000) |
| return (loc + hppa_extract_17 (curr_inst) + 8) & ~0x3; |
| |
| /* Does it look like bv (rp)? Note this depends on the |
| current stack pointer being the same as the stack |
| pointer in the stub itself! This is a branch on from the |
| stub back to the original caller. */ |
| /*else if ((curr_inst & 0xffe0e000) == 0xe840c000) */ |
| else if ((curr_inst & 0xffe0f000) == 0xe840c000) |
| { |
| /* Yup. See if the previous instruction loaded |
| rp from sp - 8. */ |
| if (prev_inst == 0x4bc23ff1) |
| return (read_memory_integer |
| (read_register (HPPA_SP_REGNUM) - 8, 4)) & ~0x3; |
| else |
| { |
| warning ("Unable to find restore of %%rp before bv (%%rp)."); |
| return orig_pc == pc ? 0 : pc & ~0x3; |
| } |
| } |
| |
| /* elz: added this case to capture the new instruction |
| at the end of the return part of an export stub used by |
| the PA2.0: BVE, n (rp) */ |
| else if ((curr_inst & 0xffe0f000) == 0xe840d000) |
| { |
| return (read_memory_integer |
| (read_register (HPPA_SP_REGNUM) - 24, TARGET_PTR_BIT / 8)) & ~0x3; |
| } |
| |
| /* What about be,n 0(sr0,%rp)? It's just another way we return to |
| the original caller from the stub. Used in dynamic executables. */ |
| else if (curr_inst == 0xe0400002) |
| { |
| /* The value we jump to is sitting in sp - 24. But that's |
| loaded several instructions before the be instruction. |
| I guess we could check for the previous instruction being |
| mtsp %r1,%sr0 if we want to do sanity checking. */ |
| return (read_memory_integer |
| (read_register (HPPA_SP_REGNUM) - 24, TARGET_PTR_BIT / 8)) & ~0x3; |
| } |
| |
| /* Haven't found the branch yet, but we're still in the stub. |
| Keep looking. */ |
| loc += 4; |
| } |
| } |
| |
| |
| /* Exception handling support for the HP-UX ANSI C++ compiler. |
| The compiler (aCC) provides a callback for exception events; |
| GDB can set a breakpoint on this callback and find out what |
| exception event has occurred. */ |
| |
| /* The name of the hook to be set to point to the callback function */ |
| static char HP_ACC_EH_notify_hook[] = "__eh_notify_hook"; |
| /* The name of the function to be used to set the hook value */ |
| static char HP_ACC_EH_set_hook_value[] = "__eh_set_hook_value"; |
| /* The name of the callback function in end.o */ |
| static char HP_ACC_EH_notify_callback[] = "__d_eh_notify_callback"; |
| /* Name of function in end.o on which a break is set (called by above) */ |
| static char HP_ACC_EH_break[] = "__d_eh_break"; |
| /* Name of flag (in end.o) that enables catching throws */ |
| static char HP_ACC_EH_catch_throw[] = "__d_eh_catch_throw"; |
| /* Name of flag (in end.o) that enables catching catching */ |
| static char HP_ACC_EH_catch_catch[] = "__d_eh_catch_catch"; |
| /* The enum used by aCC */ |
| typedef enum |
| { |
| __EH_NOTIFY_THROW, |
| __EH_NOTIFY_CATCH |
| } |
| __eh_notification; |
| |
| /* Is exception-handling support available with this executable? */ |
| static int hp_cxx_exception_support = 0; |
| /* Has the initialize function been run? */ |
| int hp_cxx_exception_support_initialized = 0; |
| /* Address of __eh_notify_hook */ |
| static CORE_ADDR eh_notify_hook_addr = 0; |
| /* Address of __d_eh_notify_callback */ |
| static CORE_ADDR eh_notify_callback_addr = 0; |
| /* Address of __d_eh_break */ |
| static CORE_ADDR eh_break_addr = 0; |
| /* Address of __d_eh_catch_catch */ |
| static CORE_ADDR eh_catch_catch_addr = 0; |
| /* Address of __d_eh_catch_throw */ |
| static CORE_ADDR eh_catch_throw_addr = 0; |
| /* Sal for __d_eh_break */ |
| static struct symtab_and_line *break_callback_sal = 0; |
| |
| /* Code in end.c expects __d_pid to be set in the inferior, |
| otherwise __d_eh_notify_callback doesn't bother to call |
| __d_eh_break! So we poke the pid into this symbol |
| ourselves. |
| 0 => success |
| 1 => failure */ |
| int |
| setup_d_pid_in_inferior (void) |
| { |
| CORE_ADDR anaddr; |
| struct minimal_symbol *msymbol; |
| char buf[4]; /* FIXME 32x64? */ |
| |
| /* Slam the pid of the process into __d_pid; failing is only a warning! */ |
| msymbol = lookup_minimal_symbol ("__d_pid", NULL, symfile_objfile); |
| if (msymbol == NULL) |
| { |
| warning ("Unable to find __d_pid symbol in object file."); |
| warning ("Suggest linking executable with -g (links in /opt/langtools/lib/end.o)."); |
| return 1; |
| } |
| |
| anaddr = SYMBOL_VALUE_ADDRESS (msymbol); |
| store_unsigned_integer (buf, 4, PIDGET (inferior_ptid)); /* FIXME 32x64? */ |
| if (target_write_memory (anaddr, buf, 4)) /* FIXME 32x64? */ |
| { |
| warning ("Unable to write __d_pid"); |
| warning ("Suggest linking executable with -g (links in /opt/langtools/lib/end.o)."); |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* elz: Used to lookup a symbol in the shared libraries. |
| This function calls shl_findsym, indirectly through a |
| call to __d_shl_get. __d_shl_get is in end.c, which is always |
| linked in by the hp compilers/linkers. |
| The call to shl_findsym cannot be made directly because it needs |
| to be active in target address space. |
| inputs: - minimal symbol pointer for the function we want to look up |
| - address in target space of the descriptor for the library |
| where we want to look the symbol up. |
| This address is retrieved using the |
| som_solib_get_solib_by_pc function (somsolib.c). |
| output: - real address in the library of the function. |
| note: the handle can be null, in which case shl_findsym will look for |
| the symbol in all the loaded shared libraries. |
| files to look at if you need reference on this stuff: |
| dld.c, dld_shl_findsym.c |
| end.c |
| man entry for shl_findsym */ |
| |
| CORE_ADDR |
| find_stub_with_shl_get (struct minimal_symbol *function, CORE_ADDR handle) |
| { |
| struct symbol *get_sym, *symbol2; |
| struct minimal_symbol *buff_minsym, *msymbol; |
| struct type *ftype; |
| struct value **args; |
| struct value *funcval; |
| struct value *val; |
| |
| int x, namelen, err_value, tmp = -1; |
| CORE_ADDR endo_buff_addr, value_return_addr, errno_return_addr; |
| CORE_ADDR stub_addr; |
| |
| |
| args = alloca (sizeof (struct value *) * 8); /* 6 for the arguments and one null one??? */ |
| funcval = find_function_in_inferior ("__d_shl_get"); |
| get_sym = lookup_symbol ("__d_shl_get", NULL, VAR_DOMAIN, NULL, NULL); |
| buff_minsym = lookup_minimal_symbol ("__buffer", NULL, NULL); |
| msymbol = lookup_minimal_symbol ("__shldp", NULL, NULL); |
| symbol2 = lookup_symbol ("__shldp", NULL, VAR_DOMAIN, NULL, NULL); |
| endo_buff_addr = SYMBOL_VALUE_ADDRESS (buff_minsym); |
| namelen = strlen (DEPRECATED_SYMBOL_NAME (function)); |
| value_return_addr = endo_buff_addr + namelen; |
| ftype = check_typedef (SYMBOL_TYPE (get_sym)); |
| |
| /* do alignment */ |
| if ((x = value_return_addr % 64) != 0) |
| value_return_addr = value_return_addr + 64 - x; |
| |
| errno_return_addr = value_return_addr + 64; |
| |
| |
| /* set up stuff needed by __d_shl_get in buffer in end.o */ |
| |
| target_write_memory (endo_buff_addr, DEPRECATED_SYMBOL_NAME (function), namelen); |
| |
| target_write_memory (value_return_addr, (char *) &tmp, 4); |
| |
| target_write_memory (errno_return_addr, (char *) &tmp, 4); |
| |
| target_write_memory (SYMBOL_VALUE_ADDRESS (msymbol), |
| (char *) &handle, 4); |
| |
| /* now prepare the arguments for the call */ |
| |
| args[0] = value_from_longest (TYPE_FIELD_TYPE (ftype, 0), 12); |
| args[1] = value_from_pointer (TYPE_FIELD_TYPE (ftype, 1), SYMBOL_VALUE_ADDRESS (msymbol)); |
| args[2] = value_from_pointer (TYPE_FIELD_TYPE (ftype, 2), endo_buff_addr); |
| args[3] = value_from_longest (TYPE_FIELD_TYPE (ftype, 3), TYPE_PROCEDURE); |
| args[4] = value_from_pointer (TYPE_FIELD_TYPE (ftype, 4), value_return_addr); |
| args[5] = value_from_pointer (TYPE_FIELD_TYPE (ftype, 5), errno_return_addr); |
| |
| /* now call the function */ |
| |
| val = call_function_by_hand (funcval, 6, args); |
| |
| /* now get the results */ |
| |
| target_read_memory (errno_return_addr, (char *) &err_value, sizeof (err_value)); |
| |
| target_read_memory (value_return_addr, (char *) &stub_addr, sizeof (stub_addr)); |
| if (stub_addr <= 0) |
| error ("call to __d_shl_get failed, error code is %d", err_value); |
| |
| return (stub_addr); |
| } |
| |
| /* Cover routine for find_stub_with_shl_get to pass to catch_errors */ |
| static int |
| cover_find_stub_with_shl_get (void *args_untyped) |
| { |
| args_for_find_stub *args = args_untyped; |
| args->return_val = find_stub_with_shl_get (args->msym, args->solib_handle); |
| return 0; |
| } |
| |
| /* Initialize exception catchpoint support by looking for the |
| necessary hooks/callbacks in end.o, etc., and set the hook value to |
| point to the required debug function |
| |
| Return 0 => failure |
| 1 => success */ |
| |
| static int |
| initialize_hp_cxx_exception_support (void) |
| { |
| struct symtabs_and_lines sals; |
| struct cleanup *old_chain; |
| struct cleanup *canonical_strings_chain = NULL; |
| int i; |
| char *addr_start; |
| char *addr_end = NULL; |
| char **canonical = (char **) NULL; |
| int thread = -1; |
| struct symbol *sym = NULL; |
| struct minimal_symbol *msym = NULL; |
| struct objfile *objfile; |
| asection *shlib_info; |
| |
| /* Detect and disallow recursion. On HP-UX with aCC, infinite |
| recursion is a possibility because finding the hook for exception |
| callbacks involves making a call in the inferior, which means |
| re-inserting breakpoints which can re-invoke this code */ |
| |
| static int recurse = 0; |
| if (recurse > 0) |
| { |
| hp_cxx_exception_support_initialized = 0; |
| deprecated_exception_support_initialized = 0; |
| return 0; |
| } |
| |
| hp_cxx_exception_support = 0; |
| |
| /* First check if we have seen any HP compiled objects; if not, |
| it is very unlikely that HP's idiosyncratic callback mechanism |
| for exception handling debug support will be available! |
| This will percolate back up to breakpoint.c, where our callers |
| will decide to try the g++ exception-handling support instead. */ |
| if (!deprecated_hp_som_som_object_present) |
| return 0; |
| |
| /* We have a SOM executable with SOM debug info; find the hooks */ |
| |
| /* First look for the notify hook provided by aCC runtime libs */ |
| /* If we find this symbol, we conclude that the executable must |
| have HP aCC exception support built in. If this symbol is not |
| found, even though we're a HP SOM-SOM file, we may have been |
| built with some other compiler (not aCC). This results percolates |
| back up to our callers in breakpoint.c which can decide to |
| try the g++ style of exception support instead. |
| If this symbol is found but the other symbols we require are |
| not found, there is something weird going on, and g++ support |
| should *not* be tried as an alternative. |
| |
| ASSUMPTION: Only HP aCC code will have __eh_notify_hook defined. |
| ASSUMPTION: HP aCC and g++ modules cannot be linked together. */ |
| |
| /* libCsup has this hook; it'll usually be non-debuggable */ |
| msym = lookup_minimal_symbol (HP_ACC_EH_notify_hook, NULL, NULL); |
| if (msym) |
| { |
| eh_notify_hook_addr = SYMBOL_VALUE_ADDRESS (msym); |
| hp_cxx_exception_support = 1; |
| } |
| else |
| { |
| warning ("Unable to find exception callback hook (%s).", HP_ACC_EH_notify_hook); |
| warning ("Executable may not have been compiled debuggable with HP aCC."); |
| warning ("GDB will be unable to intercept exception events."); |
| eh_notify_hook_addr = 0; |
| hp_cxx_exception_support = 0; |
| return 0; |
| } |
| |
| /* Next look for the notify callback routine in end.o */ |
| /* This is always available in the SOM symbol dictionary if end.o is linked in */ |
| msym = lookup_minimal_symbol (HP_ACC_EH_notify_callback, NULL, NULL); |
| if (msym) |
| { |
| eh_notify_callback_addr = SYMBOL_VALUE_ADDRESS (msym); |
| hp_cxx_exception_support = 1; |
| } |
| else |
| { |
| warning ("Unable to find exception callback routine (%s).", HP_ACC_EH_notify_callback); |
| warning ("Suggest linking executable with -g (links in /opt/langtools/lib/end.o)."); |
| warning ("GDB will be unable to intercept exception events."); |
| eh_notify_callback_addr = 0; |
| return 0; |
| } |
| |
| #ifndef GDB_TARGET_IS_HPPA_20W |
| /* Check whether the executable is dynamically linked or archive bound */ |
| /* With an archive-bound executable we can use the raw addresses we find |
| for the callback function, etc. without modification. For an executable |
| with shared libraries, we have to do more work to find the plabel, which |
| can be the target of a call through $$dyncall from the aCC runtime support |
| library (libCsup) which is linked shared by default by aCC. */ |
| /* This test below was copied from somsolib.c/somread.c. It may not be a very |
| reliable one to test that an executable is linked shared. pai/1997-07-18 */ |
| shlib_info = bfd_get_section_by_name (symfile_objfile->obfd, "$SHLIB_INFO$"); |
| if (shlib_info && (bfd_section_size (symfile_objfile->obfd, shlib_info) != 0)) |
| { |
| /* The minsym we have has the local code address, but that's not the |
| plabel that can be used by an inter-load-module call. */ |
| /* Find solib handle for main image (which has end.o), and use that |
| and the min sym as arguments to __d_shl_get() (which does the equivalent |
| of shl_findsym()) to find the plabel. */ |
| |
| args_for_find_stub args; |
| static char message[] = "Error while finding exception callback hook:\n"; |
| |
| args.solib_handle = som_solib_get_solib_by_pc (eh_notify_callback_addr); |
| args.msym = msym; |
| args.return_val = 0; |
| |
| recurse++; |
| catch_errors (cover_find_stub_with_shl_get, &args, message, |
| RETURN_MASK_ALL); |
| eh_notify_callback_addr = args.return_val; |
| recurse--; |
| |
| deprecated_exception_catchpoints_are_fragile = 1; |
| |
| if (!eh_notify_callback_addr) |
| { |
| /* We can get here either if there is no plabel in the export list |
| for the main image, or if something strange happened (?) */ |
| warning ("Couldn't find a plabel (indirect function label) for the exception callback."); |
| warning ("GDB will not be able to intercept exception events."); |
| return 0; |
| } |
| } |
| else |
| deprecated_exception_catchpoints_are_fragile = 0; |
| #endif |
| |
| /* Now, look for the breakpointable routine in end.o */ |
| /* This should also be available in the SOM symbol dict. if end.o linked in */ |
| msym = lookup_minimal_symbol (HP_ACC_EH_break, NULL, NULL); |
| if (msym) |
| { |
| eh_break_addr = SYMBOL_VALUE_ADDRESS (msym); |
| hp_cxx_exception_support = 1; |
| } |
| else |
| { |
| warning ("Unable to find exception callback routine to set breakpoint (%s).", HP_ACC_EH_break); |
| warning ("Suggest linking executable with -g (link in /opt/langtools/lib/end.o)."); |
| warning ("GDB will be unable to intercept exception events."); |
| eh_break_addr = 0; |
| return 0; |
| } |
| |
| /* Next look for the catch enable flag provided in end.o */ |
| sym = lookup_symbol (HP_ACC_EH_catch_catch, (struct block *) NULL, |
| VAR_DOMAIN, 0, (struct symtab **) NULL); |
| if (sym) /* sometimes present in debug info */ |
| { |
| eh_catch_catch_addr = SYMBOL_VALUE_ADDRESS (sym); |
| hp_cxx_exception_support = 1; |
| } |
| else |
| /* otherwise look in SOM symbol dict. */ |
| { |
| msym = lookup_minimal_symbol (HP_ACC_EH_catch_catch, NULL, NULL); |
| if (msym) |
| { |
| eh_catch_catch_addr = SYMBOL_VALUE_ADDRESS (msym); |
| hp_cxx_exception_support = 1; |
| } |
| else |
| { |
| warning ("Unable to enable interception of exception catches."); |
| warning ("Executable may not have been compiled debuggable with HP aCC."); |
| warning ("Suggest linking executable with -g (link in /opt/langtools/lib/end.o)."); |
| return 0; |
| } |
| } |
| |
| /* Next look for the catch enable flag provided end.o */ |
| sym = lookup_symbol (HP_ACC_EH_catch_catch, (struct block *) NULL, |
| VAR_DOMAIN, 0, (struct symtab **) NULL); |
| if (sym) /* sometimes present in debug info */ |
| { |
| eh_catch_throw_addr = SYMBOL_VALUE_ADDRESS (sym); |
| hp_cxx_exception_support = 1; |
| } |
| else |
| /* otherwise look in SOM symbol dict. */ |
| { |
| msym = lookup_minimal_symbol (HP_ACC_EH_catch_throw, NULL, NULL); |
| if (msym) |
| { |
| eh_catch_throw_addr = SYMBOL_VALUE_ADDRESS (msym); |
| hp_cxx_exception_support = 1; |
| } |
| else |
| { |
| warning ("Unable to enable interception of exception throws."); |
| warning ("Executable may not have been compiled debuggable with HP aCC."); |
| warning ("Suggest linking executable with -g (link in /opt/langtools/lib/end.o)."); |
| return 0; |
| } |
| } |
| |
| /* Set the flags */ |
| hp_cxx_exception_support = 2; /* everything worked so far */ |
| hp_cxx_exception_support_initialized = 1; |
| deprecated_exception_support_initialized = 1; |
| |
| return 1; |
| } |
| |
| /* Target operation for enabling or disabling interception of |
| exception events. |
| KIND is either EX_EVENT_THROW or EX_EVENT_CATCH |
| ENABLE is either 0 (disable) or 1 (enable). |
| Return value is NULL if no support found; |
| -1 if something went wrong, |
| or a pointer to a symtab/line struct if the breakpointable |
| address was found. */ |
| |
| struct symtab_and_line * |
| child_enable_exception_callback (enum exception_event_kind kind, int enable) |
| { |
| char buf[4]; |
| |
| if (!deprecated_exception_support_initialized |
| || !hp_cxx_exception_support_initialized) |
| if (!initialize_hp_cxx_exception_support ()) |
| return NULL; |
| |
| switch (hp_cxx_exception_support) |
| { |
| case 0: |
| /* Assuming no HP support at all */ |
| return NULL; |
| case 1: |
| /* HP support should be present, but something went wrong */ |
| return (struct symtab_and_line *) -1; /* yuck! */ |
| /* there may be other cases in the future */ |
| } |
| |
| /* Set the EH hook to point to the callback routine */ |
| store_unsigned_integer (buf, 4, enable ? eh_notify_callback_addr : 0); /* FIXME 32x64 problem */ |
| /* pai: (temp) FIXME should there be a pack operation first? */ |
| if (target_write_memory (eh_notify_hook_addr, buf, 4)) /* FIXME 32x64 problem */ |
| { |
| warning ("Could not write to target memory for exception event callback."); |
| warning ("Interception of exception events may not work."); |
| return (struct symtab_and_line *) -1; |
| } |
| if (enable) |
| { |
| /* Ensure that __d_pid is set up correctly -- end.c code checks this. :-( */ |
| if (PIDGET (inferior_ptid) > 0) |
| { |
| if (setup_d_pid_in_inferior ()) |
| return (struct symtab_and_line *) -1; |
| } |
| else |
| { |
| warning ("Internal error: Invalid inferior pid? Cannot intercept exception events."); |
| return (struct symtab_and_line *) -1; |
| } |
| } |
| |
| switch (kind) |
| { |
| case EX_EVENT_THROW: |
| store_unsigned_integer (buf, 4, enable ? 1 : 0); |
| if (target_write_memory (eh_catch_throw_addr, buf, 4)) /* FIXME 32x64? */ |
| { |
| warning ("Couldn't enable exception throw interception."); |
| return (struct symtab_and_line *) -1; |
| } |
| break; |
| case EX_EVENT_CATCH: |
| store_unsigned_integer (buf, 4, enable ? 1 : 0); |
| if (target_write_memory (eh_catch_catch_addr, buf, 4)) /* FIXME 32x64? */ |
| { |
| warning ("Couldn't enable exception catch interception."); |
| return (struct symtab_and_line *) -1; |
| } |
| break; |
| default: |
| error ("Request to enable unknown or unsupported exception event."); |
| } |
| |
| /* Copy break address into new sal struct, malloc'ing if needed. */ |
| if (!break_callback_sal) |
| { |
| break_callback_sal = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); |
| } |
| init_sal (break_callback_sal); |
| break_callback_sal->symtab = NULL; |
| break_callback_sal->pc = eh_break_addr; |
| break_callback_sal->line = 0; |
| break_callback_sal->end = eh_break_addr; |
| |
| return break_callback_sal; |
| } |
| |
| /* Record some information about the current exception event */ |
| static struct exception_event_record current_ex_event; |
| /* Convenience struct */ |
| static struct symtab_and_line null_symtab_and_line = |
| {NULL, 0, 0, 0}; |
| |
| /* Report current exception event. Returns a pointer to a record |
| that describes the kind of the event, where it was thrown from, |
| and where it will be caught. More information may be reported |
| in the future */ |
| struct exception_event_record * |
| child_get_current_exception_event (void) |
| { |
| CORE_ADDR event_kind; |
| CORE_ADDR throw_addr; |
| CORE_ADDR catch_addr; |
| struct frame_info *fi, *curr_frame; |
| int level = 1; |
| |
| curr_frame = get_current_frame (); |
| if (!curr_frame) |
| return (struct exception_event_record *) NULL; |
| |
| /* Go up one frame to __d_eh_notify_callback, because at the |
| point when this code is executed, there's garbage in the |
| arguments of __d_eh_break. */ |
| fi = find_relative_frame (curr_frame, &level); |
| if (level != 0) |
| return (struct exception_event_record *) NULL; |
| |
| select_frame (fi); |
| |
| /* Read in the arguments */ |
| /* __d_eh_notify_callback() is called with 3 arguments: |
| 1. event kind catch or throw |
| 2. the target address if known |
| 3. a flag -- not sure what this is. pai/1997-07-17 */ |
| event_kind = read_register (HPPA_ARG0_REGNUM); |
| catch_addr = read_register (HPPA_ARG1_REGNUM); |
| |
| /* Now go down to a user frame */ |
| /* For a throw, __d_eh_break is called by |
| __d_eh_notify_callback which is called by |
| __notify_throw which is called |
| from user code. |
| For a catch, __d_eh_break is called by |
| __d_eh_notify_callback which is called by |
| <stackwalking stuff> which is called by |
| __throw__<stuff> or __rethrow_<stuff> which is called |
| from user code. */ |
| /* FIXME: Don't use such magic numbers; search for the frames */ |
| level = (event_kind == EX_EVENT_THROW) ? 3 : 4; |
| fi = find_relative_frame (curr_frame, &level); |
| if (level != 0) |
| return (struct exception_event_record *) NULL; |
| |
| select_frame (fi); |
| throw_addr = get_frame_pc (fi); |
| |
| /* Go back to original (top) frame */ |
| select_frame (curr_frame); |
| |
| current_ex_event.kind = (enum exception_event_kind) event_kind; |
| current_ex_event.throw_sal = find_pc_line (throw_addr, 1); |
| current_ex_event.catch_sal = find_pc_line (catch_addr, 1); |
| |
| return ¤t_ex_event; |
| } |
| |
| static void |
| hppa_hpux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| |
| if (tdep->bytes_per_address == 4) |
| set_gdbarch_in_solib_call_trampoline (gdbarch, |
| hppa32_hpux_in_solib_call_trampoline); |
| else |
| set_gdbarch_in_solib_call_trampoline (gdbarch, |
| hppa64_hpux_in_solib_call_trampoline); |
| |
| set_gdbarch_in_solib_return_trampoline (gdbarch, |
| hppa_hpux_in_solib_return_trampoline); |
| set_gdbarch_skip_trampoline_code (gdbarch, hppa_hpux_skip_trampoline_code); |
| } |
| |
| static void |
| hppa_hpux_som_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| |
| tdep->is_elf = 0; |
| hppa_hpux_init_abi (info, gdbarch); |
| } |
| |
| static void |
| hppa_hpux_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| |
| tdep->is_elf = 1; |
| hppa_hpux_init_abi (info, gdbarch); |
| } |
| |
| void |
| _initialize_hppa_hpux_tdep (void) |
| { |
| gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_HPUX_SOM, |
| hppa_hpux_som_init_abi); |
| gdbarch_register_osabi (bfd_arch_hppa, bfd_mach_hppa20w, GDB_OSABI_HPUX_ELF, |
| hppa_hpux_elf_init_abi); |
| } |