| /* OBSOLETE /* Definitions to make GDB run on a Pyramid under OSx 4.0 (4.2bsd). */ |
| /* OBSOLETE Copyright 1988, 1989, 1991, 1993 Free Software Foundation, Inc. */ |
| /* OBSOLETE */ |
| /* OBSOLETE This file is part of GDB. */ |
| /* OBSOLETE */ |
| /* OBSOLETE This program is free software; you can redistribute it and/or modify */ |
| /* OBSOLETE it under the terms of the GNU General Public License as published by */ |
| /* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ |
| /* OBSOLETE (at your option) any later version. */ |
| /* OBSOLETE */ |
| /* OBSOLETE This program is distributed in the hope that it will be useful, */ |
| /* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ |
| /* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ |
| /* OBSOLETE GNU General Public License for more details. */ |
| /* OBSOLETE */ |
| /* OBSOLETE You should have received a copy of the GNU General Public License */ |
| /* OBSOLETE along with this program; if not, write to the Free Software */ |
| /* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define TARGET_BYTE_ORDER BIG_ENDIAN */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Traditional Unix virtual address spaces have thre regions: text, */ |
| /* OBSOLETE data and stack. The text, initialised data, and uninitialised data */ |
| /* OBSOLETE are represented in separate segments of the a.out file. */ |
| /* OBSOLETE When a process dumps core, the data and stack regions are written */ |
| /* OBSOLETE to a core file. This gives a debugger enough information to */ |
| /* OBSOLETE reconstruct (and debug) the virtual address space at the time of */ |
| /* OBSOLETE the coredump. */ |
| /* OBSOLETE Pyramids have an distinct fourth region of the virtual address */ |
| /* OBSOLETE space, in which the contents of the windowed registers are stacked */ |
| /* OBSOLETE in fixed-size frames. Pyramid refer to this region as the control */ |
| /* OBSOLETE stack. Each call (or trap) automatically allocates a new register */ |
| /* OBSOLETE frame; each return deallocates the current frame and restores the */ |
| /* OBSOLETE windowed registers to their values before the call. */ |
| /* OBSOLETE */ |
| /* OBSOLETE When dumping core, the control stack is written to a core files as */ |
| /* OBSOLETE a third segment. The core-handling functions need to know to deal */ |
| /* OBSOLETE with it. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Tell corefile.c there is an extra segment. *x/ */ |
| /* OBSOLETE #define REG_STACK_SEGMENT */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Floating point is IEEE compatible on most Pyramid hardware */ |
| /* OBSOLETE (Older processors do not have IEEE NaNs). *x/ */ |
| /* OBSOLETE #define IEEE_FLOAT */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Offset from address of function to start of its code. */ |
| /* OBSOLETE Zero on most machines. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FUNCTION_START_OFFSET 0 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Advance PC across any function entry prologue instructions */ |
| /* OBSOLETE to reach some "real" code. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* FIXME -- do we want to skip insns to allocate the local frame? */ |
| /* OBSOLETE If so, what do they look like? */ |
| /* OBSOLETE This is becoming harder, since tege@sics.SE wants to change */ |
| /* OBSOLETE gcc to not output a prologue when no frame is needed. *x/ */ |
| /* OBSOLETE #define SKIP_PROLOGUE(pc) (pc) */ |
| /* OBSOLETE */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Immediately after a function call, return the saved pc. */ |
| /* OBSOLETE Can't always go through the frames for this because on some machines */ |
| /* OBSOLETE the new frame is not set up until the new function executes */ |
| /* OBSOLETE some instructions. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define SAVED_PC_AFTER_CALL(frame) FRAME_SAVED_PC(frame) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Address of end of stack space. *x/ */ |
| /* OBSOLETE /* This seems to be right for the 90x comp.vuw.ac.nz. */ |
| /* OBSOLETE The correct value at any site may be a function of the configured */ |
| /* OBSOLETE maximum control stack depth. If so, I don't know where the */ |
| /* OBSOLETE control-stack depth is configured, so I can't #include it here. *x/ */ |
| /* OBSOLETE #define STACK_END_ADDR (0xc00cc000) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Register window stack (Control stack) stack definitions */ |
| /* OBSOLETE - Address of beginning of control stack. */ |
| /* OBSOLETE - size of control stack frame */ |
| /* OBSOLETE (Note that since crts0 is usually the first function called, */ |
| /* OBSOLETE main()'s control stack is one frame (0x80 bytes) beyond this value. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define CONTROL_STACK_ADDR (0xc00cd000) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Bytes in a register window -- 16 parameter regs, 16 local regs */ |
| /* OBSOLETE for each call, is 32 regs * 4 bytes *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define CONTROL_STACK_FRAME_SIZE (32*4) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* FIXME. On a pyr, Data Stack grows downward; control stack goes upwards. */ |
| /* OBSOLETE Which direction should we use for INNER_THAN, PC_INNER_THAN ?? *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Stack must be aligned on 32-bit boundaries when synthesizing */ |
| /* OBSOLETE function calls. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define STACK_ALIGN(ADDR) (((ADDR) + 3) & -4) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Sequence of bytes for breakpoint instruction. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define BREAKPOINT {0xf0, 00, 00, 00} */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Amount PC must be decremented by after a breakpoint. */ |
| /* OBSOLETE This is often the number of bytes in BREAKPOINT */ |
| /* OBSOLETE but not always. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define DECR_PC_AFTER_BREAK 0 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Say how long (ordinary) registers are. This is a piece of bogosity */ |
| /* OBSOLETE used in push_word and a few other places; REGISTER_RAW_SIZE is the */ |
| /* OBSOLETE real way to know how big a register is. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define REGISTER_SIZE 4 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Number of machine registers *x/ */ |
| /* OBSOLETE /* pyramids have 64, plus one for the PSW; plus perhaps one more for the */ |
| /* OBSOLETE kernel stack pointer (ksp) and control-stack pointer (CSP) *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define NUM_REGS 67 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Initializer for an array of names of registers. */ |
| /* OBSOLETE There should be NUM_REGS strings in this initializer. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define REGISTER_NAMES \ */ |
| /* OBSOLETE {"gr0", "gr1", "gr2", "gr3", "gr4", "gr5", "gr6", "gr7", \ */ |
| /* OBSOLETE "gr8", "gr9", "gr10", "gr11", "logpsw", "cfp", "sp", "pc", \ */ |
| /* OBSOLETE "pr0", "pr1", "pr2", "pr3", "pr4", "pr5", "pr6", "pr7", \ */ |
| /* OBSOLETE "pr8", "pr9", "pr10", "pr11", "pr12", "pr13", "pr14", "pr15", \ */ |
| /* OBSOLETE "lr0", "lr1", "lr2", "lr3", "lr4", "lr5", "lr6", "lr7", \ */ |
| /* OBSOLETE "lr8", "lr9", "lr10", "lr11", "lr12", "lr13", "lr14", "lr15", \ */ |
| /* OBSOLETE "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7", \ */ |
| /* OBSOLETE "tr8", "tr9", "tr10", "tr11", "tr12", "tr13", "tr14", "tr15", \ */ |
| /* OBSOLETE "psw", "ksp", "csp"} */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Register numbers of various important registers. */ |
| /* OBSOLETE Note that some of these values are "real" register numbers, */ |
| /* OBSOLETE and correspond to the general registers of the machine, */ |
| /* OBSOLETE and some are "phony" register numbers which are too large */ |
| /* OBSOLETE to be actual register numbers as far as the user is concerned */ |
| /* OBSOLETE but do serve to get the desired values when passed to read_register. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* pseudo-registers: *x/ */ |
| /* OBSOLETE #define PS_REGNUM 64 /* Contains processor status *x/ */ |
| /* OBSOLETE #define PSW_REGNUM 64 /* Contains current psw, whatever it is.*x/ */ |
| /* OBSOLETE #define CSP_REGNUM 65 /* address of this control stack frame*x/ */ |
| /* OBSOLETE #define KSP_REGNUM 66 /* Contains process's Kernel Stack Pointer *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define CFP_REGNUM 13 /* Current data-stack frame ptr *x/ */ |
| /* OBSOLETE #define TR0_REGNUM 48 /* After function call, contains */ |
| /* OBSOLETE function result *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Registers interesting to the machine-independent part of gdb*x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FP_REGNUM CSP_REGNUM /* Contains address of executing (control) */ |
| /* OBSOLETE stack frame *x/ */ |
| /* OBSOLETE #define SP_REGNUM 14 /* Contains address of top of stack -??*x/ */ |
| /* OBSOLETE #define PC_REGNUM 15 /* Contains program counter *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Define DO_REGISTERS_INFO() to do machine-specific formatting */ |
| /* OBSOLETE of register dumps. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define DO_REGISTERS_INFO(_regnum, fp) pyr_do_registers_info(_regnum, fp) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* need this so we can find the global registers: they never get saved. *x/ */ |
| /* OBSOLETE extern unsigned int global_reg_offset; */ |
| /* OBSOLETE extern unsigned int last_frame_offset; */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Total amount of space needed to store our copies of the machine's */ |
| /* OBSOLETE register state, the array `registers'. *x/ */ |
| /* OBSOLETE #define REGISTER_BYTES (NUM_REGS*4) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* the Pyramid has register windows. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define HAVE_REGISTER_WINDOWS */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Is this register part of the register window system? A yes answer */ |
| /* OBSOLETE implies that 1) The name of this register will not be the same in */ |
| /* OBSOLETE other frames, and 2) This register is automatically "saved" (out */ |
| /* OBSOLETE registers shifting into ins counts) upon subroutine calls and thus */ |
| /* OBSOLETE there is no need to search more than one stack frame for it. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define REGISTER_IN_WINDOW_P(regnum) \ */ |
| /* OBSOLETE ((regnum) >= 16 && (regnum) < 64) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Index within `registers' of the first byte of the space for */ |
| /* OBSOLETE register N. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define REGISTER_BYTE(N) ((N) * 4) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Number of bytes of storage in the actual machine representation */ |
| /* OBSOLETE for register N. On the Pyramid, all regs are 4 bytes. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define REGISTER_RAW_SIZE(N) 4 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Number of bytes of storage in the program's representation */ |
| /* OBSOLETE for register N. On the Pyramid, all regs are 4 bytes. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define REGISTER_VIRTUAL_SIZE(N) 4 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Largest value REGISTER_RAW_SIZE can have. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define MAX_REGISTER_RAW_SIZE 4 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Largest value REGISTER_VIRTUAL_SIZE can have. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define MAX_REGISTER_VIRTUAL_SIZE 4 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Return the GDB type object for the "standard" data type */ |
| /* OBSOLETE of data in register N. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define REGISTER_VIRTUAL_TYPE(N) builtin_type_int */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* FIXME: It seems impossible for both EXTRACT_RETURN_VALUE and */ |
| /* OBSOLETE STORE_RETURN_VALUE to be correct. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Store the address of the place in which to copy the structure the */ |
| /* OBSOLETE subroutine will return. This is called from call_function. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /****FIXME****x/ */ |
| /* OBSOLETE #define STORE_STRUCT_RETURN(ADDR, SP) \ */ |
| /* OBSOLETE { write_register (TR0_REGNUM, (ADDR)); } */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */ |
| /* OBSOLETE a function return value of type TYPE, and copy that, in virtual format, */ |
| /* OBSOLETE into VALBUF. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Note that on a register-windowing machine (eg, Pyr, SPARC), this is */ |
| /* OBSOLETE where the value is found after the function call -- ie, it should */ |
| /* OBSOLETE correspond to GNU CC's FUNCTION_VALUE rather than FUNCTION_OUTGOING_VALUE.*x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ */ |
| /* OBSOLETE memcpy (VALBUF, ((int *)(REGBUF))+TR0_REGNUM, TYPE_LENGTH (TYPE)) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Write into appropriate registers a function return value */ |
| /* OBSOLETE of type TYPE, given in virtual format. *x/ */ |
| /* OBSOLETE /* on pyrs, values are returned in *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define STORE_RETURN_VALUE(TYPE,VALBUF) \ */ |
| /* OBSOLETE write_register_bytes (REGISTER_BYTE(TR0_REGNUM), VALBUF, TYPE_LENGTH (TYPE)) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */ |
| /* OBSOLETE the address in which a function should return its structure value, */ |
| /* OBSOLETE as a CORE_ADDR (or an expression that can be used as one). *x/ */ |
| /* OBSOLETE /* FIXME *x/ */ |
| /* OBSOLETE #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ */ |
| /* OBSOLETE ( ((int *)(REGBUF)) [TR0_REGNUM]) */ |
| /* OBSOLETE */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Describe the pointer in each stack frame to the previous stack frame */ |
| /* OBSOLETE (its caller). *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define EXTRA_FRAME_INFO \ */ |
| /* OBSOLETE CORE_ADDR bottom; \ */ |
| /* OBSOLETE CORE_ADDR frame_cfp; \ */ |
| /* OBSOLETE CORE_ADDR frame_window_addr; */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* The bottom field is misnamed, since it might imply that memory from */ |
| /* OBSOLETE bottom to frame contains this frame. That need not be true if */ |
| /* OBSOLETE stack frames are allocated in different segments (e.g. some on a */ |
| /* OBSOLETE stack, some on a heap in the data segment). *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define INIT_EXTRA_FRAME_INFO(fromleaf, fci) \ */ |
| /* OBSOLETE do { \ */ |
| /* OBSOLETE (fci)->frame_window_addr = (fci)->frame; \ */ |
| /* OBSOLETE (fci)->bottom = \ */ |
| /* OBSOLETE ((fci)->next ? \ */ |
| /* OBSOLETE ((fci)->frame == (fci)->next->frame ? \ */ |
| /* OBSOLETE (fci)->next->bottom : (fci)->next->frame) : \ */ |
| /* OBSOLETE read_register (SP_REGNUM)); \ */ |
| /* OBSOLETE (fci)->frame_cfp = \ */ |
| /* OBSOLETE read_register (CFP_REGNUM); \ */ |
| /* OBSOLETE /***fprintf (stderr, \ */ |
| /* OBSOLETE "[[creating new frame for %0x,pc=%0x,csp=%0x]]\n", \ */ |
| /* OBSOLETE (fci)->frame, (fci)->pc,(fci)->frame_cfp);*x/ \ */ |
| /* OBSOLETE } while (0); */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* FRAME_CHAIN takes a frame's nominal address */ |
| /* OBSOLETE and produces the frame's chain-pointer. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* In the case of the pyr, the frame's nominal address is the address */ |
| /* OBSOLETE of parameter register 0. The previous frame is found 32 words up. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FRAME_CHAIN(thisframe) \ */ |
| /* OBSOLETE ( (thisframe) -> frame - CONTROL_STACK_FRAME_SIZE) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /*((thisframe) >= CONTROL_STACK_ADDR))*x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Define other aspects of the stack frame. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* A macro that tells us whether the function invocation represented */ |
| /* OBSOLETE by FI does not have a frame on the stack associated with it. If it */ |
| /* OBSOLETE does not, FRAMELESS is set to 1, else 0. */ |
| /* OBSOLETE */ |
| /* OBSOLETE I do not understand what this means on a Pyramid, where functions */ |
| /* OBSOLETE *always* have a control-stack frame, but may or may not have a */ |
| /* OBSOLETE frame on the data stack. Since GBD uses the value of the */ |
| /* OBSOLETE control stack pointer as its "address" of a frame, FRAMELESS */ |
| /* OBSOLETE is always 1, so does not need to be defined. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Where is the PC for a specific frame *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FRAME_SAVED_PC(fi) \ */ |
| /* OBSOLETE ((CORE_ADDR) (read_memory_integer ( (fi) -> frame + 60, 4))) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* There may be bugs in FRAME_ARGS_ADDRESS and FRAME_LOCALS_ADDRESS; */ |
| /* OBSOLETE or there may be bugs in accessing the registers that break */ |
| /* OBSOLETE their definitions. */ |
| /* OBSOLETE Having the macros expand into functions makes them easier to debug. */ |
| /* OBSOLETE When the bug is finally located, the inline macro defintions can */ |
| /* OBSOLETE be un-#if 0ed, and frame_args_addr and frame_locals_address can */ |
| /* OBSOLETE be deleted from pyr-dep.c *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* If the argument is on the stack, it will be here. *x/ */ |
| /* OBSOLETE #define FRAME_ARGS_ADDRESS(fi) \ */ |
| /* OBSOLETE frame_args_addr(fi) */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FRAME_LOCALS_ADDRESS(fi) \ */ |
| /* OBSOLETE frame_locals_address(fi) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* The following definitions doesn't seem to work. */ |
| /* OBSOLETE I don't understand why. *x/ */ |
| /* OBSOLETE #if 0 */ |
| /* OBSOLETE #define FRAME_ARGS_ADDRESS(fi) \ */ |
| /* OBSOLETE /*(FRAME_FP(fi) + (13*4))*x/ (read_register (CFP_REGNUM)) */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FRAME_LOCALS_ADDRESS(fi) \ */ |
| /* OBSOLETE ((fi)->frame +(16*4)) */ |
| /* OBSOLETE */ |
| /* OBSOLETE #endif /* 0 *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Return number of args passed to a frame. */ |
| /* OBSOLETE Can return -1, meaning no way to tell. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FRAME_NUM_ARGS(fi) (-1) */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Return number of bytes at start of arglist that are not really args. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FRAME_ARGS_SKIP 0 */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Put here the code to store, into a struct frame_saved_regs, */ |
| /* OBSOLETE the addresses of the saved registers of frame described by FRAME_INFO. */ |
| /* OBSOLETE This includes special registers such as pc and fp saved in special */ |
| /* OBSOLETE ways in the stack frame. sp is even more special: */ |
| /* OBSOLETE the address we return for it IS the sp for the next frame. */ |
| /* OBSOLETE */ |
| /* OBSOLETE Note that on register window machines, we are currently making the */ |
| /* OBSOLETE assumption that window registers are being saved somewhere in the */ |
| /* OBSOLETE frame in which they are being used. If they are stored in an */ |
| /* OBSOLETE inferior frame, find_saved_register will break. */ |
| /* OBSOLETE */ |
| /* OBSOLETE On pyrs, frames of window registers are stored contiguously on a */ |
| /* OBSOLETE separate stack. All window registers are always stored. */ |
| /* OBSOLETE The pc and psw (gr15 and gr14) are also always saved: the call */ |
| /* OBSOLETE insn saves them in pr15 and pr14 of the new frame (tr15,tr14 of the */ |
| /* OBSOLETE old frame). */ |
| /* OBSOLETE The data-stack frame pointer (CFP) is only saved in functions which */ |
| /* OBSOLETE allocate a (data)stack frame (with "adsf"). We detect them by */ |
| /* OBSOLETE looking at the first insn of the procedure. */ |
| /* OBSOLETE */ |
| /* OBSOLETE Other non-window registers (gr0-gr11) are never saved. Pyramid's C */ |
| /* OBSOLETE compiler and gcc currently ignore them, so it's not an issue. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FRAME_FIND_SAVED_REGS(fi_p, frame_saved_regs) \ */ |
| /* OBSOLETE { register int regnum; \ */ |
| /* OBSOLETE register CORE_ADDR pc; \ */ |
| /* OBSOLETE register CORE_ADDR fn_start_pc; \ */ |
| /* OBSOLETE register int first_insn; \ */ |
| /* OBSOLETE register CORE_ADDR prev_cf_addr; \ */ |
| /* OBSOLETE register int window_ptr; \ */ |
| /* OBSOLETE if (!fi_p) fatal ("Bad frame info struct in FRAME_FIND_SAVED_REGS"); \ */ |
| /* OBSOLETE memset (&(frame_saved_regs), '\0', sizeof (frame_saved_regs)); \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE window_ptr = prev_cf_addr = FRAME_FP(fi_p); \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE for (regnum = 16 ; regnum < 64; regnum++,window_ptr+=4) \ */ |
| /* OBSOLETE { \ */ |
| /* OBSOLETE (frame_saved_regs).regs[regnum] = window_ptr; \ */ |
| /* OBSOLETE } \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE /* In each window, psw, and pc are "saved" in tr14,tr15. *x/ \ */ |
| /* OBSOLETE /*** psw is sometimes saved in gr12 (so sez <sys/pcb.h>) *x/ \ */ |
| /* OBSOLETE (frame_saved_regs).regs[PS_REGNUM] = FRAME_FP(fi_p) + (14*4); \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE /*(frame_saved_regs).regs[PC_REGNUM] = (frame_saved_regs).regs[31];*x/ \ */ |
| /* OBSOLETE (frame_saved_regs).regs[PC_REGNUM] = FRAME_FP(fi_p) + ((15+32)*4); \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE /* Functions that allocate a frame save sp *where*? *x/ \ */ |
| /* OBSOLETE /*first_insn = read_memory_integer (get_pc_function_start ((fi_p)->pc),4); *x/ \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE fn_start_pc = (get_pc_function_start ((fi_p)->pc)); \ */ |
| /* OBSOLETE first_insn = read_memory_integer(fn_start_pc, 4); \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE if (0x08 == ((first_insn >> 20) &0x0ff)) { \ */ |
| /* OBSOLETE /* NB: because WINDOW_REGISTER_P(cfp) is false, a saved cfp \ */ |
| /* OBSOLETE in this frame is only visible in this frame's callers. \ */ |
| /* OBSOLETE That means the cfp we mark saved is my caller's cfp, ie pr13. \ */ |
| /* OBSOLETE I don't understand why we don't have to do that for pc, too. *x/ \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE (frame_saved_regs).regs[CFP_REGNUM] = FRAME_FP(fi_p)+(13*4); \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE (frame_saved_regs).regs[SP_REGNUM] = \ */ |
| /* OBSOLETE read_memory_integer (FRAME_FP(fi_p)+((13+32)*4),4); \ */ |
| /* OBSOLETE } \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE /* \ */ |
| /* OBSOLETE *(frame_saved_regs).regs[CFP_REGNUM] = (frame_saved_regs).regs[61]; \ */ |
| /* OBSOLETE * (frame_saved_regs).regs[SP_REGNUM] = \ */ |
| /* OBSOLETE * read_memory_integer (FRAME_FP(fi_p)+((13+32)*4),4); \ */ |
| /* OBSOLETE *x/ \ */ |
| /* OBSOLETE \ */ |
| /* OBSOLETE (frame_saved_regs).regs[CSP_REGNUM] = prev_cf_addr; \ */ |
| /* OBSOLETE } */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Things needed for making the inferior call functions. *x/ */ |
| /* OBSOLETE #if 0 */ |
| /* OBSOLETE /* These are all lies. These macro definitions are appropriate for a */ |
| /* OBSOLETE SPARC. On a pyramid, pushing a dummy frame will */ |
| /* OBSOLETE surely involve writing the control stack pointer, */ |
| /* OBSOLETE then saving the pc. This requires a privileged instruction. */ |
| /* OBSOLETE Maybe one day Pyramid can be persuaded to add a syscall to do this. */ |
| /* OBSOLETE Until then, we are out of luck. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Push an empty stack frame, to record the current PC, etc. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define PUSH_DUMMY_FRAME \ */ |
| /* OBSOLETE { register CORE_ADDR sp = read_register (SP_REGNUM);\ */ |
| /* OBSOLETE register int regnum; \ */ |
| /* OBSOLETE sp = push_word (sp, 0); /* arglist *x/ \ */ |
| /* OBSOLETE for (regnum = 11; regnum >= 0; regnum--) \ */ |
| /* OBSOLETE sp = push_word (sp, read_register (regnum)); \ */ |
| /* OBSOLETE sp = push_word (sp, read_register (PC_REGNUM)); \ */ |
| /* OBSOLETE sp = push_word (sp, read_register (FP_REGNUM)); \ */ |
| /* OBSOLETE /* sp = push_word (sp, read_register (AP_REGNUM));*x/ \ */ |
| /* OBSOLETE sp = push_word (sp, (read_register (PS_REGNUM) & 0xffef) \ */ |
| /* OBSOLETE + 0x2fff0000); \ */ |
| /* OBSOLETE sp = push_word (sp, 0); \ */ |
| /* OBSOLETE write_register (SP_REGNUM, sp); \ */ |
| /* OBSOLETE write_register (FP_REGNUM, sp); \ */ |
| /* OBSOLETE /* write_register (AP_REGNUM, sp + 17 * sizeof (int));*x/ } */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Discard from the stack the innermost frame, restoring all registers. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define POP_FRAME \ */ |
| /* OBSOLETE { register CORE_ADDR fp = read_register (FP_REGNUM); \ */ |
| /* OBSOLETE register int regnum; \ */ |
| /* OBSOLETE register int regmask = read_memory_integer (fp + 4, 4); \ */ |
| /* OBSOLETE write_register (PS_REGNUM, \ */ |
| /* OBSOLETE (regmask & 0xffff) \ */ |
| /* OBSOLETE | (read_register (PS_REGNUM) & 0xffff0000)); \ */ |
| /* OBSOLETE write_register (PC_REGNUM, read_memory_integer (fp + 16, 4)); \ */ |
| /* OBSOLETE write_register (FP_REGNUM, read_memory_integer (fp + 12, 4)); \ */ |
| /* OBSOLETE /* write_register (AP_REGNUM, read_memory_integer (fp + 8, 4));*x/ \ */ |
| /* OBSOLETE fp += 16; \ */ |
| /* OBSOLETE for (regnum = 0; regnum < 12; regnum++) \ */ |
| /* OBSOLETE if (regmask & (0x10000 << regnum)) \ */ |
| /* OBSOLETE write_register (regnum, read_memory_integer (fp += 4, 4)); \ */ |
| /* OBSOLETE fp = fp + 4 + ((regmask >> 30) & 3); \ */ |
| /* OBSOLETE if (regmask & 0x20000000) \ */ |
| /* OBSOLETE { regnum = read_memory_integer (fp, 4); \ */ |
| /* OBSOLETE fp += (regnum + 1) * 4; } \ */ |
| /* OBSOLETE write_register (SP_REGNUM, fp); \ */ |
| /* OBSOLETE set_current_frame (read_register (FP_REGNUM)); } */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* This sequence of words is the instructions */ |
| /* OBSOLETE calls #69, @#32323232 */ |
| /* OBSOLETE bpt */ |
| /* OBSOLETE Note this is 8 bytes. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define CALL_DUMMY {0x329f69fb, 0x03323232} */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Insert the specified number of args and function address */ |
| /* OBSOLETE into a call sequence of the above form stored at DUMMYNAME. *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ */ |
| /* OBSOLETE { *((char *) dummyname + 1) = nargs; \ */ |
| /* OBSOLETE *(int *)((char *) dummyname + 3) = fun; } */ |
| /* OBSOLETE #endif /* 0 *x/ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #define POP_FRAME \ */ |
| /* OBSOLETE { error ("The return command is not supported on this machine."); } */ |
