forked from Imagelibrary/binutils-gdb
2000-05-10 Michael Snyder <msnyder@seadog.cygnus.com>
Make Sparc a Multi-Arch target. Discard PARAMS macro (require ANSI). * sparc-tdep.c: include arch-utils.h. (SPARC_HAS_FPU, FP_REGISTER_BYTES, FP_MAX_REG NUM, SPARC_INTREG_SIZE, DUMMY_REG_SAVE_OFFSET): provide multi-arch-compatible definitions. (GDB_TARGET_IS_SPARC64): make into a runtime test. (struct frame_extra_info): Define, use instead of the macro. (Many places): Use alloca instead of statically allocated buffers that depend on a multi-arch variable such as MAX_REGISTER_RAW_SIZE. (sparc_extract_struct_value_address): Accept a pointer arg instead of an array sized by REGISTER_BYTES. (examine_prologue): Accept a pointer to an array of CORE_ADDR, instead of the defunct struct frame_saved_regs. Recognize new Sparc64 store instructions as part of the prologue. Ignore the destination of a frame store when parsing the prologue (so long as it's on the stack). (sparc_push_dummy_frame): Fix incorrect buffer offset for PSTATE. (sparc_frame_find_saved_regs): Accept a ptr to an array of CORE_ADDR instead of the defunct struct frame_saved_regs. (supply_gregset): Discard unnecessary 'zerobuf': just send NULL to supply_register. Provide 4-byte offset to compensate for diff between size of the prgreg_t elements on a 64-bit host and size of the registers for a 32-bit target. Fill all inaccessible regs with zero so they won't keep being requested again and again. (fill_gregset): Handle 32/64 size difference between registers and prgreg_t. Handle as many new 64-bit regs as possible. (supply_fpregset, fill_fpregset): Attempt to handle 64-bit world. (sparc_push_arguments): Rename to sparc32_push_arguments. Copy arguments into registers as well as onto stack, so that the CALL_DUMMY (code pushed onto the target stack) is not required. (sparc_extract_return_value): Rename to sparc32_extract_return_value. (sparc_store_return_value): Use memset instead of bzero. Use write_register_gen instead of write_register_bytes. (sparclet_store_return_value): New function. (_initialize_sparc_tdep): Call register_gdbarch_init to activate the gdbarch multi-architecture system. (sp64_push_arguments): Rename to sparc64_push_arguments. Extend to store arguments in general registers as well as on stack. (sparc64_extract_return_value): Rename to sp64_extract_return_value. Use as a private function, to be called by the new external function sparc64_extract_return_value. (sparclet_extract_return_value): New function. (sparc32_stack_align, sparc64_stack_align, sparc32_register_name, sparc64_register_name, sparc_print_extra_frame_info, sparclite_register_name, sparclet_register_name, sparc_push_return_address, sparc64_use_struct_convention, sparc32_store_struct_return, sparc64_store_struct_return, sparc32_register_virtual_type, sparc64_register_virtual_type, sparc32_register_size, sparc64_register_size, sparc32_register_byte, sparc64_register_byte, sparc_gdbarch_skip_prologue, sparc_convert_to_virtual, sparc_convert_to_raw, sparc_frame_init_saved_regs, sparc_frame_address, sparc_gdbarch_fix_call_dummy, sparc_coerce_float_to_double, sparc_call_dummy_address, sparc_y_regnum, sparc_reg_struct_has_addr, sparc_intreg_size, sparc_return_value_on_stack): New functions supporting multi-arch. (sparc_gdbarch_init): New function; initialize multi-arch. (struct gdbarch_tdep): Define, use for private multi-arch data. * config/sparc/tm-sparc.h: Move definitions around, enclose with #ifdef GDB_MULTI_ARCH tests, provide some multi-arch alternate definitions. Add enums for register names, to help debugging gdb. This header file must work for non-multi-arch and for multi-arch. * config/sparc/tm-sp64.h: Add GDB_MULTI_ARCH configuration. Also add AT_ENTRY_POINT definitions for CALL_DUMMY, for non-multi-arch case. Define GDB_MULTI_ARCH. * config/sparc/tm-sparclet.h: Add GDB_MULTI_ARCH configuration. Do not define GDB_MULTI_ARCH (bfd does not correctly identify target). * config/sparc/tm-sparclite.h: Ditto. * config/sparc/tm-sun4sol2.h: Define GDB_MULTI_ARCH. * sparclet-rom.c (sparclet_regnames): Initialize explicitly, to avoid using deprecated REGISTER_NAMES macro. * Makefile.in: Let sparc-tdep.c depend on arch-utils.h.
This commit is contained in:
Michael Snyder
@@ -22,9 +22,13 @@
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#define GDB_TARGET_IS_SPARC64
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#define GDB_MULTI_ARCH 2
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struct value;
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#ifndef GDB_TARGET_IS_SPARC64
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#define GDB_TARGET_IS_SPARC64 1
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#endif
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#include "sparc/tm-sparc.h"
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/* Eeeew. Ok, we have to assume (for now) that the processor really is
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in sparc64 mode. While this is the same instruction sequence as
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@@ -70,6 +74,57 @@ struct value;
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nop
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*/
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#if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0)
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/*
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* The following defines must go away for MULTI_ARCH.
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*/
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#ifndef DO_CALL_DUMMY_ON_STACK
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/*
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* These defines will suffice for the AT_ENTRY_POINT call dummy method.
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*/
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#undef CALL_DUMMY
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#define CALL_DUMMY {0}
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#undef CALL_DUMMY_LENGTH
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#define CALL_DUMMY_LENGTH 0
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#undef CALL_DUMMY_CALL_OFFSET
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#define CALL_DUMMY_CALL_OFFSET 0
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#undef CALL_DUMMY_START_OFFSET
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#define CALL_DUMMY_START_OFFSET 0
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#undef CALL_DUMMY_BREAKPOINT_OFFSET
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#define CALL_DUMMY_BREAKPOINT_OFFSET 0
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#undef CALL_DUMMY_BREAKPOINT_OFFSET_P
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#define CALL_DUMMY_BREAKPOINT_OFFSET_P 1
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#undef CALL_DUMMY_LOCATION
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#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
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#undef CALL_DUMMY_STACK_ADJUST
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#define CALL_DUMMY_STACK_ADJUST 128
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#undef SIZEOF_CALL_DUMMY_WORDS
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#define SIZEOF_CALL_DUMMY_WORDS 0
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#undef CALL_DUMMY_ADDRESS
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#define CALL_DUMMY_ADDRESS() entry_point_address()
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#undef FIX_CALL_DUMMY
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#define FIX_CALL_DUMMY(DUMMYNAME, PC, FUN, NARGS, ARGS, TYPE, GCC_P)
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#undef PUSH_RETURN_ADDRESS
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#define PUSH_RETURN_ADDRESS(PC, SP) sparc_at_entry_push_return_address (PC, SP)
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extern CORE_ADDR
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sparc_at_entry_push_return_address (CORE_ADDR pc, CORE_ADDR sp);
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#undef STORE_STRUCT_RETURN
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#define STORE_STRUCT_RETURN(ADDR, SP) \
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sparc_at_entry_store_struct_return (ADDR, SP)
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extern void
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sparc_at_entry_store_struct_return (CORE_ADDR addr, CORE_ADDR sp);
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#else
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/*
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* Old call dummy method, with CALL_DUMMY on the stack.
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*/
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#undef CALL_DUMMY
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#define CALL_DUMMY { 0x9de3bec0fd3fa7f7LL, 0xf93fa7eff53fa7e7LL,\
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0xf13fa7dfed3fa7d7LL, 0xe93fa7cfe53fa7c7LL,\
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0xe13fa7bfdd3fa7b7LL, 0xd93fa7afd53fa7a7LL,\
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@@ -86,17 +141,83 @@ struct value;
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/* 128 is to reserve space to write the %i/%l registers that will be restored
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when we resume. */
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#undef CALL_DUMMY_STACK_ADJUST
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#define CALL_DUMMY_STACK_ADJUST 128
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/* Size of the call dummy in bytes. */
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#undef CALL_DUMMY_LENGTH
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#define CALL_DUMMY_LENGTH 192
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/* Offset within CALL_DUMMY of the 'call' instruction. */
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#undef CALL_DUMMY_START_OFFSET
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#define CALL_DUMMY_START_OFFSET 148
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/* Offset within CALL_DUMMY of the 'call' instruction. */
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#undef CALL_DUMMY_CALL_OFFSET
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#define CALL_DUMMY_CALL_OFFSET (CALL_DUMMY_START_OFFSET + (5 * 4))
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/* Offset within CALL_DUMMY of the 'ta 1' instruction. */
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#undef CALL_DUMMY_BREAKPOINT_OFFSET
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#define CALL_DUMMY_BREAKPOINT_OFFSET (CALL_DUMMY_START_OFFSET + (8 * 4))
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#include "sparc/tm-sparc.h"
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/* Let's GDB know that it can make a call_dummy breakpoint. */
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#undef CALL_DUMMY_BREAKPOINT_OFFSET_P
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#define CALL_DUMMY_BREAKPOINT_OFFSET_P 1
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/* Call dummy will be located on the stack. */
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#undef CALL_DUMMY_LOCATION
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#define CALL_DUMMY_LOCATION ON_STACK
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/* Insert the function address into the call dummy. */
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#undef FIX_CALL_DUMMY
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#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
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sparc_fix_call_dummy (dummyname, pc, fun, type, gcc_p)
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void sparc_fix_call_dummy PARAMS ((char *dummy, CORE_ADDR pc, CORE_ADDR fun,
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struct type * value_type, int using_gcc));
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/* The remainder of these will accept the default definition. */
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#undef SIZEOF_CALL_DUMMY_WORDS
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#undef PUSH_RETURN_ADDRESS
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#undef CALL_DUMMY_ADDRESS
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#undef STORE_STRUCT_RETURN
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#endif
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/* Does the specified function use the "struct returning" convention
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or the "value returning" convention? The "value returning" convention
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almost invariably returns the entire value in registers. The
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"struct returning" convention often returns the entire value in
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memory, and passes a pointer (out of or into the function) saying
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where the value (is or should go).
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Since this sometimes depends on whether it was compiled with GCC,
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this is also an argument. This is used in call_function to build a
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stack, and in value_being_returned to print return values.
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On Sparc64, we only pass pointers to structs if they're larger then
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32 bytes. Otherwise they're stored in %o0-%o3 (floating-point
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values go into %fp0-%fp3). */
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#undef USE_STRUCT_CONVENTION
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#define USE_STRUCT_CONVENTION(gcc_p, type) (TYPE_LENGTH (type) > 32)
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CORE_ADDR sparc64_push_arguments PARAMS ((int,
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struct value **,
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CORE_ADDR,
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int,
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CORE_ADDR));
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#undef PUSH_ARGUMENTS
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#define PUSH_ARGUMENTS(A,B,C,D,E) \
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(sparc64_push_arguments ((A), (B), (C), (D), (E)))
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/* Store the address of the place in which to copy the structure the
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subroutine will return. This is called from call_function. */
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/* FIXME: V9 uses %o0 for this. */
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#undef STORE_STRUCT_RETURN
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#define STORE_STRUCT_RETURN(ADDR, SP) \
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{ target_write_memory ((SP)+(16*8), (char *)&(ADDR), 8); }
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/* Stack must be aligned on 128-bit boundaries when synthesizing
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function calls. */
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@@ -104,11 +225,6 @@ struct value;
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#undef STACK_ALIGN
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#define STACK_ALIGN(ADDR) (((ADDR) + 15 ) & -16)
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/* Number of machine registers. */
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#undef NUM_REGS
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#define NUM_REGS 125
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/* Initializer for an array of names of registers.
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There should be NUM_REGS strings in this initializer. */
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/* Some of these registers are only accessible from priviledged mode.
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@@ -148,6 +264,25 @@ struct value;
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"icc", "xcc", "fcc0", "fcc1", "fcc2", "fcc3" \
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}
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#undef REG_STRUCT_HAS_ADDR
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#define REG_STRUCT_HAS_ADDR(gcc_p,type) (TYPE_LENGTH (type) > 32)
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extern CORE_ADDR sparc64_read_sp ();
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extern CORE_ADDR sparc64_read_fp ();
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extern void sparc64_write_sp PARAMS ((CORE_ADDR));
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extern void sparc64_write_fp PARAMS ((CORE_ADDR));
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#define TARGET_READ_SP() (sparc64_read_sp ())
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#define TARGET_READ_FP() (sparc64_read_fp ())
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#define TARGET_WRITE_SP(X) (sparc64_write_sp (X))
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#define TARGET_WRITE_FP(X) (sparc64_write_fp (X))
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#undef EXTRACT_RETURN_VALUE
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#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
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sp64_extract_return_value(TYPE, REGBUF, VALBUF, 0)
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extern void
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sp64_extract_return_value PARAMS ((struct type *, char[], char *, int));
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/* Register numbers of various important registers.
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Note that some of these values are "real" register numbers,
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and correspond to the general registers of the machine,
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@@ -155,7 +290,8 @@ struct value;
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to be actual register numbers as far as the user is concerned
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but do serve to get the desired values when passed to read_register. */
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#if 0 /* defined in tm-sparc.h, replicated for doc purposes */
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#if 0 /* defined in tm-sparc.h, replicated
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for doc purposes */
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#define G0_REGNUM 0 /* %g0 */
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#define G1_REGNUM 1 /* %g1 */
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#define O0_REGNUM 8 /* %o0 */
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@@ -172,7 +308,7 @@ struct value;
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#define FP0_REGNUM 32 /* Floating point register 0 */
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#endif
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#define FP_MAX_REGNUM 80 /* 1 + last fp reg number */
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/*#define FP_MAX_REGNUM 80*/ /* 1 + last fp reg number */
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/* #undef v8 misc. regs */
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@@ -187,7 +323,8 @@ struct value;
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/* v9 misc. and priv. regs */
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#define C0_REGNUM FP_MAX_REGNUM /* Start of control registers */
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#define C0_REGNUM 80 /* Start of control registers */
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#define PC_REGNUM (C0_REGNUM + 0) /* Current PC */
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#define NPC_REGNUM (C0_REGNUM + 1) /* Next PC */
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#define CCR_REGNUM (C0_REGNUM + 2) /* Condition Code Register (%xcc,%icc) */
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@@ -220,6 +357,11 @@ struct value;
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#define FCC2_REGNUM (C0_REGNUM + 43) /* fp cc reg 2 */
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#define FCC3_REGNUM (C0_REGNUM + 44) /* fp cc reg 3 */
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/* Number of machine registers. */
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#undef NUM_REGS
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#define NUM_REGS 125
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/* Total amount of space needed to store our copies of the machine's
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register state, the array `registers'.
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Some of the registers aren't 64 bits, but it's a lot simpler just to assume
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@@ -291,40 +433,12 @@ struct value;
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#undef TARGET_LONG_LONG_BIT
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#define TARGET_LONG_LONG_BIT 64
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/* Does the specified function use the "struct returning" convention
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or the "value returning" convention? The "value returning" convention
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almost invariably returns the entire value in registers. The
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"struct returning" convention often returns the entire value in
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memory, and passes a pointer (out of or into the function) saying
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where the value (is or should go).
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Since this sometimes depends on whether it was compiled with GCC,
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this is also an argument. This is used in call_function to build a
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stack, and in value_being_returned to print return values.
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On Sparc64, we only pass pointers to structs if they're larger then
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32 bytes. Otherwise they're stored in %o0-%o3 (floating-point
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values go into %fp0-%fp3). */
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#undef USE_STRUCT_CONVENTION
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#define USE_STRUCT_CONVENTION(gcc_p, type) (TYPE_LENGTH (type) > 32)
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#undef REG_STRUCT_HAS_ADDR
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#define REG_STRUCT_HAS_ADDR(gcc_p,type) (TYPE_LENGTH (type) > 32)
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/* Store the address of the place in which to copy the structure the
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subroutine will return. This is called from call_function. */
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/* FIXME: V9 uses %o0 for this. */
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#undef STORE_STRUCT_RETURN
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#define STORE_STRUCT_RETURN(ADDR, SP) \
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{ target_write_memory ((SP)+(16*8), (char *)&(ADDR), 8); }
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/* Return number of bytes at start of arglist that are not really args. */
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#undef FRAME_ARGS_SKIP
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#define FRAME_ARGS_SKIP 136
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#endif /* GDB_MULTI_ARCH */
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/* Offsets into jmp_buf.
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FIXME: This was borrowed from the v8 stuff and will probably have to change
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@@ -342,36 +456,18 @@ struct value;
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#define JB_O0 7
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#define JB_WBCNT 8
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/* Figure out where the longjmp will land. We expect that we have just entered
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longjmp and haven't yet setup the stack frame, so the args are still in the
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output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we
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extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
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This routine returns true on success */
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/* Figure out where the longjmp will land. We expect that we have
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just entered longjmp and haven't yet setup the stack frame, so the
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args are still in the output regs. %o0 (O0_REGNUM) points at the
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jmp_buf structure from which we extract the pc (JB_PC) that we will
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land at. The pc is copied into ADDR. This routine returns true on
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success */
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extern int
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get_longjmp_target PARAMS ((CORE_ADDR *));
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#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
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extern CORE_ADDR sparc64_read_sp ();
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extern CORE_ADDR sparc64_read_fp ();
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extern void sparc64_write_sp PARAMS ((CORE_ADDR));
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extern void sparc64_write_fp PARAMS ((CORE_ADDR));
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#define TARGET_READ_SP() (sparc64_read_sp ())
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#define TARGET_READ_FP() (sparc64_read_fp ())
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#define TARGET_WRITE_SP(X) (sparc64_write_sp (X))
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#define TARGET_WRITE_FP(X) (sparc64_write_fp (X))
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#undef TM_PRINT_INSN_MACH
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#define TM_PRINT_INSN_MACH bfd_mach_sparc_v9a
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CORE_ADDR sp64_push_arguments PARAMS ((int, struct value **, CORE_ADDR, unsigned char, CORE_ADDR));
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#undef PUSH_ARGUMENTS
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#define PUSH_ARGUMENTS(A,B,C,D,E) (sp64_push_arguments ((A), (B), (C), (D), (E)))
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#undef EXTRACT_RETURN_VALUE
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#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
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sparc64_extract_return_value(TYPE, REGBUF, VALBUF, 0)
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extern void
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sparc64_extract_return_value PARAMS ((struct type *, char[], char *, int));
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