Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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. */
/* Forward declarations of some types we use in prototypes */
Zero on most machines. */
#define FUNCTION_START_OFFSET 0
-
+
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
/* elz: adjust the quantity to the next highest value which is 64-bit aligned.
This is used in valops.c, when the sp is adjusted.
- On hppa the sp must always be kept 64-bit aligned*/
+ On hppa the sp must always be kept 64-bit aligned */
#define STACK_ALIGN(arg) ( ((arg)%8) ? (((arg)+7)&-8) : (arg))
-#define NO_EXTRA_ALIGNMENT_NEEDED 1
+#define NO_EXTRA_ALIGNMENT_NEEDED 1
/* Sequence of bytes for breakpoint instruction. */
is of these "really, truly negative" addresses that come from the
minimal symbols, I'm resorting to the gross hack of checking the
top byte of the address for all 1's. Sigh.
- */
+ */
#define PC_REQUIRES_RUN_BEFORE_USE(pc) \
(! target_has_stack && (pc & 0xFF000000))
-/* return instruction is bv r0(rp) or bv,n r0(rp)*/
+/* return instruction is bv r0(rp) or bv,n r0(rp) */
#define ABOUT_TO_RETURN(pc) ((read_memory_integer (pc, 4) | 0x2) == 0xE840C002)
#define RCR_REGNUM 51 /* Recover Counter (also known as cr0) */
#define CCR_REGNUM 54 /* Coprocessor Configuration Register */
#define TR0_REGNUM 57 /* Temporary Registers (cr24 -> cr31) */
-#define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */
-#define FP0_REGNUM 64 /* floating point reg. 0 (fspr)*/
+#define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */
+#define FP0_REGNUM 64 /* floating point reg. 0 (fspr) */
#define FP4_REGNUM 72
-#define ARG0_REGNUM 26 /* The first argument of a callee. */
-#define ARG1_REGNUM 25 /* The second argument of a callee. */
-#define ARG2_REGNUM 24 /* The third argument of a callee. */
-#define ARG3_REGNUM 23 /* The fourth argument of a callee. */
+#define ARG0_REGNUM 26 /* The first argument of a callee. */
+#define ARG1_REGNUM 25 /* The second argument of a callee. */
+#define ARG2_REGNUM 24 /* The third argument of a callee. */
+#define ARG3_REGNUM 23 /* The fourth argument of a callee. */
/* compatibility with the rest of gdb. */
#define PC_REGNUM PCOQ_HEAD_REGNUM
* Processor Status Word Masks
*/
-#define PSW_T 0x01000000 /* Taken Branch Trap Enable */
-#define PSW_H 0x00800000 /* Higher-Privilege Transfer Trap Enable */
-#define PSW_L 0x00400000 /* Lower-Privilege Transfer Trap Enable */
-#define PSW_N 0x00200000 /* PC Queue Front Instruction Nullified */
-#define PSW_X 0x00100000 /* Data Memory Break Disable */
-#define PSW_B 0x00080000 /* Taken Branch in Previous Cycle */
-#define PSW_C 0x00040000 /* Code Address Translation Enable */
-#define PSW_V 0x00020000 /* Divide Step Correction */
-#define PSW_M 0x00010000 /* High-Priority Machine Check Disable */
-#define PSW_CB 0x0000ff00 /* Carry/Borrow Bits */
-#define PSW_R 0x00000010 /* Recovery Counter Enable */
-#define PSW_Q 0x00000008 /* Interruption State Collection Enable */
-#define PSW_P 0x00000004 /* Protection ID Validation Enable */
-#define PSW_D 0x00000002 /* Data Address Translation Enable */
-#define PSW_I 0x00000001 /* External, Power Failure, Low-Priority */
- /* Machine Check Interruption Enable */
+#define PSW_T 0x01000000 /* Taken Branch Trap Enable */
+#define PSW_H 0x00800000 /* Higher-Privilege Transfer Trap Enable */
+#define PSW_L 0x00400000 /* Lower-Privilege Transfer Trap Enable */
+#define PSW_N 0x00200000 /* PC Queue Front Instruction Nullified */
+#define PSW_X 0x00100000 /* Data Memory Break Disable */
+#define PSW_B 0x00080000 /* Taken Branch in Previous Cycle */
+#define PSW_C 0x00040000 /* Code Address Translation Enable */
+#define PSW_V 0x00020000 /* Divide Step Correction */
+#define PSW_M 0x00010000 /* High-Priority Machine Check Disable */
+#define PSW_CB 0x0000ff00 /* Carry/Borrow Bits */
+#define PSW_R 0x00000010 /* Recovery Counter Enable */
+#define PSW_Q 0x00000008 /* Interruption State Collection Enable */
+#define PSW_P 0x00000004 /* Protection ID Validation Enable */
+#define PSW_D 0x00000002 /* Data Address Translation Enable */
+#define PSW_I 0x00000001 /* External, Power Failure, Low-Priority */
+ /* Machine Check Interruption Enable */
/* When fetching register values from an inferior or a core file,
clean them up using this macro. BUF is a char pointer to
fr4: floating point up to 64 bits
sr1: space identifier (32-bit)
stack: any lager than 64-bit, with the address in r28
- */
+ */
extern use_struct_convention_fn hppa_use_struct_convention;
#define USE_STRUCT_CONVENTION(gcc_p,type) hppa_use_struct_convention (gcc_p,type)
convention doc. As far as I know, the only way to get the return value
is to have the caller tell us where it told the callee to put it, rather
than have the callee tell us.
-*/
+ */
#define VALUE_RETURNED_FROM_STACK(valtype,addr) \
hppa_value_returned_from_stack (valtype, addr)
(frameless_function_invocation (FI))
extern int frameless_function_invocation PARAMS ((struct frame_info *));
-extern CORE_ADDR hppa_frame_saved_pc PARAMS ((struct frame_info *frame));
+extern CORE_ADDR hppa_frame_saved_pc PARAMS ((struct frame_info * frame));
#define FRAME_SAVED_PC(FRAME) hppa_frame_saved_pc (FRAME)
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
extern void
hppa_frame_find_saved_regs PARAMS ((struct frame_info *,
struct frame_saved_regs *));
-
\f
+
/* Things needed for making the inferior call functions. */
/* Push an empty stack frame, to record the current PC, etc. */
/* This sequence of words is the instructions
-; Call stack frame has already been built by gdb. Since we could be calling
-; a varargs function, and we do not have the benefit of a stub to put things in
-; the right place, we load the first 4 word of arguments into both the general
-; and fp registers.
-call_dummy
- ldw -36(sp), arg0
- ldw -40(sp), arg1
- ldw -44(sp), arg2
- ldw -48(sp), arg3
- ldo -36(sp), r1
- fldws 0(0, r1), fr4
- fldds -4(0, r1), fr5
- fldws -8(0, r1), fr6
- fldds -12(0, r1), fr7
- ldil 0, r22 ; FUNC_LDIL_OFFSET must point here
- ldo 0(r22), r22 ; FUNC_LDO_OFFSET must point here
- ldsid (0,r22), r4
- ldil 0, r1 ; SR4EXPORT_LDIL_OFFSET must point here
- ldo 0(r1), r1 ; SR4EXPORT_LDO_OFFSET must point here
- ldsid (0,r1), r20
- combt,=,n r4, r20, text_space ; If target is in data space, do a
- ble 0(sr5, r22) ; "normal" procedure call
- copy r31, r2
- break 4, 8
- mtsp r21, sr0
- ble,n 0(sr0, r22)
-text_space ; Otherwise, go through _sr4export,
- ble (sr4, r1) ; which will return back here.
- stw r31,-24(r30)
- break 4, 8
- mtsp r21, sr0
- ble,n 0(sr0, r22)
- nop ; To avoid kernel bugs
- nop ; and keep the dummy 8 byte aligned
+ ; Call stack frame has already been built by gdb. Since we could be calling
+ ; a varargs function, and we do not have the benefit of a stub to put things in
+ ; the right place, we load the first 4 word of arguments into both the general
+ ; and fp registers.
+ call_dummy
+ ldw -36(sp), arg0
+ ldw -40(sp), arg1
+ ldw -44(sp), arg2
+ ldw -48(sp), arg3
+ ldo -36(sp), r1
+ fldws 0(0, r1), fr4
+ fldds -4(0, r1), fr5
+ fldws -8(0, r1), fr6
+ fldds -12(0, r1), fr7
+ ldil 0, r22 ; FUNC_LDIL_OFFSET must point here
+ ldo 0(r22), r22 ; FUNC_LDO_OFFSET must point here
+ ldsid (0,r22), r4
+ ldil 0, r1 ; SR4EXPORT_LDIL_OFFSET must point here
+ ldo 0(r1), r1 ; SR4EXPORT_LDO_OFFSET must point here
+ ldsid (0,r1), r20
+ combt,=,n r4, r20, text_space ; If target is in data space, do a
+ ble 0(sr5, r22) ; "normal" procedure call
+ copy r31, r2
+ break 4, 8
+ mtsp r21, sr0
+ ble,n 0(sr0, r22)
+ text_space ; Otherwise, go through _sr4export,
+ ble (sr4, r1) ; which will return back here.
+ stw r31,-24(r30)
+ break 4, 8
+ mtsp r21, sr0
+ ble,n 0(sr0, r22)
+ nop ; To avoid kernel bugs
+ nop ; and keep the dummy 8 byte aligned
The dummy decides if the target is in text space or data space. If
it's in data space, there's no problem because the target can
registers (or floating point??), so we skip all that inter-space call stuff,
and avoid touching the fp regs.
-call_dummy
-
- ldw -36(%sp), %arg0
- ldw -40(%sp), %arg1
- ldw -44(%sp), %arg2
- ldw -48(%sp), %arg3
- ldil 0, %r31 ; FUNC_LDIL_OFFSET must point here
- ldo 0(%r31), %r31 ; FUNC_LDO_OFFSET must point here
- ble 0(%sr0, %r31)
- copy %r31, %r2
- break 4, 8
- nop ; restore_pc_queue expects these
- bv,n 0(%r22) ; instructions to be here...
- nop
-*/
+ call_dummy
+
+ ldw -36(%sp), %arg0
+ ldw -40(%sp), %arg1
+ ldw -44(%sp), %arg2
+ ldw -48(%sp), %arg3
+ ldil 0, %r31 ; FUNC_LDIL_OFFSET must point here
+ ldo 0(%r31), %r31 ; FUNC_LDO_OFFSET must point here
+ ble 0(%sr0, %r31)
+ copy %r31, %r2
+ break 4, 8
+ nop ; restore_pc_queue expects these
+ bv,n 0(%r22) ; instructions to be here...
+ nop
+ */
/* Define offsets into the call dummy for the target function address */
#define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 4)
#define FIX_CALL_DUMMY hppa_fix_call_dummy
extern CORE_ADDR
-hppa_fix_call_dummy PARAMS ((char *, CORE_ADDR, CORE_ADDR, int,
- struct value **, struct type *, int));
+ hppa_fix_call_dummy PARAMS ((char *, CORE_ADDR, CORE_ADDR, int,
+ struct value **, struct type *, int));
#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
(hppa_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
extern CORE_ADDR
-hppa_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int,
- CORE_ADDR));
+ hppa_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int,
+ CORE_ADDR));
\f
/* The low two bits of the PC on the PA contain the privilege level. Some
genius implementing a (non-GCC) compiler apparently decided this means
* Unwind table and descriptor.
*/
-struct unwind_table_entry {
- unsigned int region_start;
- unsigned int region_end;
-
- unsigned int Cannot_unwind : 1; /* 0 */
- unsigned int Millicode : 1; /* 1 */
- unsigned int Millicode_save_sr0 : 1; /* 2 */
- unsigned int Region_description : 2; /* 3..4 */
- unsigned int reserved1 : 1; /* 5 */
- unsigned int Entry_SR : 1; /* 6 */
- unsigned int Entry_FR : 4; /* number saved */ /* 7..10 */
- unsigned int Entry_GR : 5; /* number saved */ /* 11..15 */
- unsigned int Args_stored : 1; /* 16 */
- unsigned int Variable_Frame : 1; /* 17 */
- unsigned int Separate_Package_Body : 1; /* 18 */
- unsigned int Frame_Extension_Millicode:1; /* 19 */
- unsigned int Stack_Overflow_Check : 1; /* 20 */
- unsigned int Two_Instruction_SP_Increment:1; /* 21 */
- unsigned int Ada_Region : 1; /* 22 */
- unsigned int cxx_info : 1; /* 23 */
- unsigned int cxx_try_catch : 1; /* 24 */
- unsigned int sched_entry_seq : 1; /* 25 */
- unsigned int reserved2 : 1; /* 26 */
- unsigned int Save_SP : 1; /* 27 */
- unsigned int Save_RP : 1; /* 28 */
- unsigned int Save_MRP_in_frame : 1; /* 29 */
- unsigned int extn_ptr_defined : 1; /* 30 */
- unsigned int Cleanup_defined : 1; /* 31 */
-
- unsigned int MPE_XL_interrupt_marker: 1; /* 0 */
- unsigned int HP_UX_interrupt_marker: 1; /* 1 */
- unsigned int Large_frame : 1; /* 2 */
- unsigned int Pseudo_SP_Set : 1; /* 3 */
- unsigned int reserved4 : 1; /* 4 */
- unsigned int Total_frame_size : 27; /* 5..31 */
-
- /* This is *NOT* part of an actual unwind_descriptor in an object
- file. It is *ONLY* part of the "internalized" descriptors that
- we create from those in a file.
+struct unwind_table_entry
+ {
+ unsigned int region_start;
+ unsigned int region_end;
+
+ unsigned int Cannot_unwind:1; /* 0 */
+ unsigned int Millicode:1; /* 1 */
+ unsigned int Millicode_save_sr0:1; /* 2 */
+ unsigned int Region_description:2; /* 3..4 */
+ unsigned int reserved1:1; /* 5 */
+ unsigned int Entry_SR:1; /* 6 */
+ unsigned int Entry_FR:4; /* number saved *//* 7..10 */
+ unsigned int Entry_GR:5; /* number saved *//* 11..15 */
+ unsigned int Args_stored:1; /* 16 */
+ unsigned int Variable_Frame:1; /* 17 */
+ unsigned int Separate_Package_Body:1; /* 18 */
+ unsigned int Frame_Extension_Millicode:1; /* 19 */
+ unsigned int Stack_Overflow_Check:1; /* 20 */
+ unsigned int Two_Instruction_SP_Increment:1; /* 21 */
+ unsigned int Ada_Region:1; /* 22 */
+ unsigned int cxx_info:1; /* 23 */
+ unsigned int cxx_try_catch:1; /* 24 */
+ unsigned int sched_entry_seq:1; /* 25 */
+ unsigned int reserved2:1; /* 26 */
+ unsigned int Save_SP:1; /* 27 */
+ unsigned int Save_RP:1; /* 28 */
+ unsigned int Save_MRP_in_frame:1; /* 29 */
+ unsigned int extn_ptr_defined:1; /* 30 */
+ unsigned int Cleanup_defined:1; /* 31 */
+
+ unsigned int MPE_XL_interrupt_marker:1; /* 0 */
+ unsigned int HP_UX_interrupt_marker:1; /* 1 */
+ unsigned int Large_frame:1; /* 2 */
+ unsigned int Pseudo_SP_Set:1; /* 3 */
+ unsigned int reserved4:1; /* 4 */
+ unsigned int Total_frame_size:27; /* 5..31 */
+
+ /* This is *NOT* part of an actual unwind_descriptor in an object
+ file. It is *ONLY* part of the "internalized" descriptors that
+ we create from those in a file.
*/
- struct {
- unsigned int stub_type : 4; /* 0..3 */
- unsigned int padding : 28; /* 4..31 */
- } stub_unwind;
-};
+ struct
+ {
+ unsigned int stub_type:4; /* 0..3 */
+ unsigned int padding:28; /* 4..31 */
+ }
+ stub_unwind;
+ };
/* HP linkers also generate unwinds for various linker-generated stubs.
GDB reads in the stubs from the $UNWIND_END$ subspace, then
fields to store the stub type. */
struct stub_unwind_entry
-{
- /* The offset within the executable for the associated stub. */
- unsigned stub_offset;
+ {
+ /* The offset within the executable for the associated stub. */
+ unsigned stub_offset;
- /* The type of stub this unwind entry describes. */
- char type;
+ /* The type of stub this unwind entry describes. */
+ char type;
- /* Unknown. Not needed by GDB at this time. */
- char prs_info;
+ /* Unknown. Not needed by GDB at this time. */
+ char prs_info;
- /* Length (in instructions) of the associated stub. */
- short stub_length;
-};
+ /* Length (in instructions) of the associated stub. */
+ short stub_length;
+ };
/* Sizes (in bytes) of the native unwind entries. */
#define UNWIND_ENTRY_SIZE 16
/* The gaps represent linker stubs used in MPE and space for future
expansion. */
enum unwind_stub_types
-{
- LONG_BRANCH = 1,
- PARAMETER_RELOCATION = 2,
- EXPORT = 10,
- IMPORT = 11,
- IMPORT_SHLIB = 12,
-};
+ {
+ LONG_BRANCH = 1,
+ PARAMETER_RELOCATION = 2,
+ EXPORT = 10,
+ IMPORT = 11,
+ IMPORT_SHLIB = 12,
+ };
/* We use the objfile->obj_private pointer for two things:
- *
+
* 1. An unwind table;
*
* 2. A pointer to any associated shared library object.
*
* #defines are used to help refer to these objects.
*/
-
+
/* Info about the unwind table associated with an object file.
- *
+
* This is hung off of the "objfile->obj_private" pointer, and
* is allocated in the objfile's psymbol obstack. This allows
* us to have unique unwind info for each executable and shared
* library that we are debugging.
*/
-struct obj_unwind_info {
- struct unwind_table_entry *table; /* Pointer to unwind info */
- struct unwind_table_entry *cache; /* Pointer to last entry we found */
- int last; /* Index of last entry */
-};
-
-typedef struct obj_private_struct {
- struct obj_unwind_info *unwind_info; /* a pointer */
- struct so_list *so_info; /* a pointer */
-} obj_private_data_t;
+struct obj_unwind_info
+ {
+ struct unwind_table_entry *table; /* Pointer to unwind info */
+ struct unwind_table_entry *cache; /* Pointer to last entry we found */
+ int last; /* Index of last entry */
+ };
+
+typedef struct obj_private_struct
+ {
+ struct obj_unwind_info *unwind_info; /* a pointer */
+ struct so_list *so_info; /* a pointer */
+ }
+obj_private_data_t;
#if 0
-extern void target_write_pc PARAMS ((CORE_ADDR, int))
-extern CORE_ADDR target_read_pc PARAMS ((int));
-extern CORE_ADDR skip_trampoline_code PARAMS ((CORE_ADDR, char *));
+extern void target_write_pc
+PARAMS ((CORE_ADDR, int))
+ extern CORE_ADDR target_read_pc PARAMS ((int));
+ extern CORE_ADDR skip_trampoline_code PARAMS ((CORE_ADDR, char *));
#endif
#define TARGET_READ_PC(pid) target_read_pc (pid)
-extern CORE_ADDR target_read_pc PARAMS ((int));
+ extern CORE_ADDR target_read_pc PARAMS ((int));
#define TARGET_WRITE_PC(v,pid) target_write_pc (v,pid)
-extern void target_write_pc PARAMS ((CORE_ADDR, int));
+ extern void target_write_pc PARAMS ((CORE_ADDR, int));
#define TARGET_READ_FP() target_read_fp (inferior_pid)
-extern CORE_ADDR target_read_fp PARAMS ((int));
+ extern CORE_ADDR target_read_fp PARAMS ((int));
/* For a number of horrible reasons we may have to adjust the location
of variables on the stack. Ugh. */
#define HPREAD_ADJUST_STACK_ADDRESS(ADDR) hpread_adjust_stack_address(ADDR)
-extern int hpread_adjust_stack_address PARAMS ((CORE_ADDR));
+ extern int hpread_adjust_stack_address PARAMS ((CORE_ADDR));
/* If the current gcc for for this target does not produce correct debugging
information for float parameters, both prototyped and unprototyped, then