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-rw-r--r--sim/sh/interp.c2777
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diff --git a/sim/sh/interp.c b/sim/sh/interp.c
deleted file mode 100644
index d89b0dc..0000000
--- a/sim/sh/interp.c
+++ /dev/null
@@ -1,2777 +0,0 @@
-/* Simulator for the Renesas (formerly Hitachi) / SuperH Inc. SH architecture.
-
- Written by Steve Chamberlain of Cygnus Support.
- sac@cygnus.com
-
- This file is part of SH sim
-
-
- THIS SOFTWARE IS NOT COPYRIGHTED
-
- Cygnus offers the following for use in the public domain. Cygnus
- makes no warranty with regard to the software or it's performance
- and the user accepts the software "AS IS" with all faults.
-
- CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
- THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
-*/
-
-#include "config.h"
-
-#include <signal.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#ifdef HAVE_MMAP
-#include <sys/mman.h>
-# ifndef MAP_FAILED
-# define MAP_FAILED -1
-# endif
-# if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
-# define MAP_ANONYMOUS MAP_ANON
-# endif
-#endif
-
-#include "sysdep.h"
-#include "bfd.h"
-#include "gdb/callback.h"
-#include "gdb/remote-sim.h"
-#include "gdb/sim-sh.h"
-
-/* This file is local - if newlib changes, then so should this. */
-#include "syscall.h"
-
-#include <math.h>
-
-#ifdef _WIN32
-#include <float.h> /* Needed for _isnan() */
-#define isnan _isnan
-#endif
-
-#ifndef SIGBUS
-#define SIGBUS SIGSEGV
-#endif
-
-#ifndef SIGQUIT
-#define SIGQUIT SIGTERM
-#endif
-
-#ifndef SIGTRAP
-#define SIGTRAP 5
-#endif
-
-extern unsigned short sh_jump_table[], sh_dsp_table[0x1000], ppi_table[];
-
-int sim_write (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size);
-
-#define O_RECOMPILE 85
-#define DEFINE_TABLE
-#define DISASSEMBLER_TABLE
-
-/* Define the rate at which the simulator should poll the host
- for a quit. */
-#define POLL_QUIT_INTERVAL 0x60000
-
-typedef struct
-{
- int regs[20];
-} regstacktype;
-
-typedef union
-{
-
- struct
- {
- int regs[16];
- int pc;
-
- /* System registers. For sh-dsp this also includes A0 / X0 / X1 / Y0 / Y1
- which are located in fregs, i.e. strictly speaking, these are
- out-of-bounds accesses of sregs.i . This wart of the code could be
- fixed by making fregs part of sregs, and including pc too - to avoid
- alignment repercussions - but this would cause very onerous union /
- structure nesting, which would only be managable with anonymous
- unions and structs. */
- union
- {
- struct
- {
- int mach;
- int macl;
- int pr;
- int dummy3, dummy4;
- int fpul; /* A1 for sh-dsp - but only for movs etc. */
- int fpscr; /* dsr for sh-dsp */
- } named;
- int i[7];
- } sregs;
-
- /* sh3e / sh-dsp */
- union fregs_u
- {
- float f[16];
- double d[8];
- int i[16];
- }
- fregs[2];
-
- /* Control registers; on the SH4, ldc / stc is privileged, except when
- accessing gbr. */
- union
- {
- struct
- {
- int sr;
- int gbr;
- int vbr;
- int ssr;
- int spc;
- int mod;
- /* sh-dsp */
- int rs;
- int re;
- /* sh3 */
- int bank[8];
- int dbr; /* debug base register */
- int sgr; /* saved gr15 */
- int ldst; /* load/store flag (boolean) */
- int tbr;
- int ibcr; /* sh2a bank control register */
- int ibnr; /* sh2a bank number register */
- } named;
- int i[16];
- } cregs;
-
- unsigned char *insn_end;
-
- int ticks;
- int stalls;
- int memstalls;
- int cycles;
- int insts;
-
- int prevlock;
- int thislock;
- int exception;
-
- int end_of_registers;
-
- int msize;
-#define PROFILE_FREQ 1
-#define PROFILE_SHIFT 2
- int profile;
- unsigned short *profile_hist;
- unsigned char *memory;
- int xyram_select, xram_start, yram_start;
- unsigned char *xmem;
- unsigned char *ymem;
- unsigned char *xmem_offset;
- unsigned char *ymem_offset;
- unsigned long bfd_mach;
- regstacktype *regstack;
- }
- asregs;
- int asints[40];
-} saved_state_type;
-
-saved_state_type saved_state;
-
-struct loop_bounds { unsigned char *start, *end; };
-
-/* These variables are at file scope so that functions other than
- sim_resume can use the fetch/store macros */
-
-static int target_little_endian;
-static int global_endianw, endianb;
-static int target_dsp;
-static int host_little_endian;
-static char **prog_argv;
-
-static int maskw = 0;
-static int maskl = 0;
-
-static SIM_OPEN_KIND sim_kind;
-static char *myname;
-static int tracing = 0;
-
-
-/* Short hand definitions of the registers */
-
-#define SBIT(x) ((x)&sbit)
-#define R0 saved_state.asregs.regs[0]
-#define Rn saved_state.asregs.regs[n]
-#define Rm saved_state.asregs.regs[m]
-#define UR0 (unsigned int) (saved_state.asregs.regs[0])
-#define UR (unsigned int) R
-#define UR (unsigned int) R
-#define SR0 saved_state.asregs.regs[0]
-#define CREG(n) (saved_state.asregs.cregs.i[(n)])
-#define GBR saved_state.asregs.cregs.named.gbr
-#define VBR saved_state.asregs.cregs.named.vbr
-#define DBR saved_state.asregs.cregs.named.dbr
-#define TBR saved_state.asregs.cregs.named.tbr
-#define IBCR saved_state.asregs.cregs.named.ibcr
-#define IBNR saved_state.asregs.cregs.named.ibnr
-#define BANKN (saved_state.asregs.cregs.named.ibnr & 0x1ff)
-#define ME ((saved_state.asregs.cregs.named.ibnr >> 14) & 0x3)
-#define SSR saved_state.asregs.cregs.named.ssr
-#define SPC saved_state.asregs.cregs.named.spc
-#define SGR saved_state.asregs.cregs.named.sgr
-#define SREG(n) (saved_state.asregs.sregs.i[(n)])
-#define MACH saved_state.asregs.sregs.named.mach
-#define MACL saved_state.asregs.sregs.named.macl
-#define PR saved_state.asregs.sregs.named.pr
-#define FPUL saved_state.asregs.sregs.named.fpul
-
-#define PC insn_ptr
-
-
-
-/* Alternate bank of registers r0-r7 */
-
-/* Note: code controling SR handles flips between BANK0 and BANK1 */
-#define Rn_BANK(n) (saved_state.asregs.cregs.named.bank[(n)])
-#define SET_Rn_BANK(n, EXP) do { saved_state.asregs.cregs.named.bank[(n)] = (EXP); } while (0)
-
-
-/* Manipulate SR */
-
-#define SR_MASK_BO (1 << 14)
-#define SR_MASK_CS (1 << 13)
-#define SR_MASK_DMY (1 << 11)
-#define SR_MASK_DMX (1 << 10)
-#define SR_MASK_M (1 << 9)
-#define SR_MASK_Q (1 << 8)
-#define SR_MASK_I (0xf << 4)
-#define SR_MASK_S (1 << 1)
-#define SR_MASK_T (1 << 0)
-
-#define SR_MASK_BL (1 << 28)
-#define SR_MASK_RB (1 << 29)
-#define SR_MASK_MD (1 << 30)
-#define SR_MASK_RC 0x0fff0000
-#define SR_RC_INCREMENT -0x00010000
-
-#define BO ((saved_state.asregs.cregs.named.sr & SR_MASK_BO) != 0)
-#define CS ((saved_state.asregs.cregs.named.sr & SR_MASK_CS) != 0)
-#define M ((saved_state.asregs.cregs.named.sr & SR_MASK_M) != 0)
-#define Q ((saved_state.asregs.cregs.named.sr & SR_MASK_Q) != 0)
-#define S ((saved_state.asregs.cregs.named.sr & SR_MASK_S) != 0)
-#define T ((saved_state.asregs.cregs.named.sr & SR_MASK_T) != 0)
-#define LDST ((saved_state.asregs.cregs.named.ldst) != 0)
-
-#define SR_BL ((saved_state.asregs.cregs.named.sr & SR_MASK_BL) != 0)
-#define SR_RB ((saved_state.asregs.cregs.named.sr & SR_MASK_RB) != 0)
-#define SR_MD ((saved_state.asregs.cregs.named.sr & SR_MASK_MD) != 0)
-#define SR_DMY ((saved_state.asregs.cregs.named.sr & SR_MASK_DMY) != 0)
-#define SR_DMX ((saved_state.asregs.cregs.named.sr & SR_MASK_DMX) != 0)
-#define SR_RC ((saved_state.asregs.cregs.named.sr & SR_MASK_RC))
-
-/* Note: don't use this for privileged bits */
-#define SET_SR_BIT(EXP, BIT) \
-do { \
- if ((EXP) & 1) \
- saved_state.asregs.cregs.named.sr |= (BIT); \
- else \
- saved_state.asregs.cregs.named.sr &= ~(BIT); \
-} while (0)
-
-#define SET_SR_BO(EXP) SET_SR_BIT ((EXP), SR_MASK_BO)
-#define SET_SR_CS(EXP) SET_SR_BIT ((EXP), SR_MASK_CS)
-#define SET_BANKN(EXP) \
-do { \
- IBNR = (IBNR & 0xfe00) | (EXP & 0x1f); \
-} while (0)
-#define SET_ME(EXP) \
-do { \
- IBNR = (IBNR & 0x3fff) | ((EXP & 0x3) << 14); \
-} while (0)
-#define SET_SR_M(EXP) SET_SR_BIT ((EXP), SR_MASK_M)
-#define SET_SR_Q(EXP) SET_SR_BIT ((EXP), SR_MASK_Q)
-#define SET_SR_S(EXP) SET_SR_BIT ((EXP), SR_MASK_S)
-#define SET_SR_T(EXP) SET_SR_BIT ((EXP), SR_MASK_T)
-#define SET_LDST(EXP) (saved_state.asregs.cregs.named.ldst = ((EXP) != 0))
-
-/* stc currently relies on being able to read SR without modifications. */
-#define GET_SR() (saved_state.asregs.cregs.named.sr - 0)
-
-#define SET_SR(x) set_sr (x)
-
-#define SET_RC(x) \
- (saved_state.asregs.cregs.named.sr \
- = saved_state.asregs.cregs.named.sr & 0xf000ffff | ((x) & 0xfff) << 16)
-
-/* Manipulate FPSCR */
-
-#define FPSCR_MASK_FR (1 << 21)
-#define FPSCR_MASK_SZ (1 << 20)
-#define FPSCR_MASK_PR (1 << 19)
-
-#define FPSCR_FR ((GET_FPSCR () & FPSCR_MASK_FR) != 0)
-#define FPSCR_SZ ((GET_FPSCR () & FPSCR_MASK_SZ) != 0)
-#define FPSCR_PR ((GET_FPSCR () & FPSCR_MASK_PR) != 0)
-
-/* Count the number of arguments in an argv. */
-static int
-count_argc (char **argv)
-{
- int i;
-
- if (! argv)
- return -1;
-
- for (i = 0; argv[i] != NULL; ++i)
- continue;
- return i;
-}
-
-static void
-set_fpscr1 (x)
- int x;
-{
- int old = saved_state.asregs.sregs.named.fpscr;
- saved_state.asregs.sregs.named.fpscr = (x);
- /* swap the floating point register banks */
- if ((saved_state.asregs.sregs.named.fpscr ^ old) & FPSCR_MASK_FR
- /* Ignore bit change if simulating sh-dsp. */
- && ! target_dsp)
- {
- union fregs_u tmpf = saved_state.asregs.fregs[0];
- saved_state.asregs.fregs[0] = saved_state.asregs.fregs[1];
- saved_state.asregs.fregs[1] = tmpf;
- }
-}
-
-/* sts relies on being able to read fpscr directly. */
-#define GET_FPSCR() (saved_state.asregs.sregs.named.fpscr)
-#define SET_FPSCR(x) \
-do { \
- set_fpscr1 (x); \
-} while (0)
-
-#define DSR (saved_state.asregs.sregs.named.fpscr)
-
-int
-fail ()
-{
- abort ();
-}
-
-#define RAISE_EXCEPTION(x) \
- (saved_state.asregs.exception = x, saved_state.asregs.insn_end = 0)
-
-#define RAISE_EXCEPTION_IF_IN_DELAY_SLOT() \
- if (in_delay_slot) RAISE_EXCEPTION (SIGILL)
-
-/* This function exists mainly for the purpose of setting a breakpoint to
- catch simulated bus errors when running the simulator under GDB. */
-
-void
-raise_exception (x)
- int x;
-{
- RAISE_EXCEPTION (x);
-}
-
-void
-raise_buserror ()
-{
- raise_exception (SIGBUS);
-}
-
-#define PROCESS_SPECIAL_ADDRESS(addr, endian, ptr, bits_written, \
- forbidden_addr_bits, data, retval) \
-do { \
- if (addr & forbidden_addr_bits) \
- { \
- raise_buserror (); \
- return retval; \
- } \
- else if ((addr & saved_state.asregs.xyram_select) \
- == saved_state.asregs.xram_start) \
- ptr = (void *) &saved_state.asregs.xmem_offset[addr ^ endian]; \
- else if ((addr & saved_state.asregs.xyram_select) \
- == saved_state.asregs.yram_start) \
- ptr = (void *) &saved_state.asregs.ymem_offset[addr ^ endian]; \
- else if ((unsigned) addr >> 24 == 0xf0 \
- && bits_written == 32 && (data & 1) == 0) \
- /* This invalidates (if not associative) or might invalidate \
- (if associative) an instruction cache line. This is used for \
- trampolines. Since we don't simulate the cache, this is a no-op \
- as far as the simulator is concerned. */ \
- return retval; \
- else \
- { \
- if (bits_written == 8 && addr > 0x5000000) \
- IOMEM (addr, 1, data); \
- /* We can't do anything useful with the other stuff, so fail. */ \
- raise_buserror (); \
- return retval; \
- } \
-} while (0)
-
-/* FIXME: sim_resume should be renamed to sim_engine_run. sim_resume
- being implemented by ../common/sim_resume.c and the below should
- make a call to sim_engine_halt */
-
-#define BUSERROR(addr, mask) ((addr) & (mask))
-
-#define WRITE_BUSERROR(addr, mask, data, addr_func) \
- do \
- { \
- if (addr & mask) \
- { \
- addr_func (addr, data); \
- return; \
- } \
- } \
- while (0)
-
-#define READ_BUSERROR(addr, mask, addr_func) \
- do \
- { \
- if (addr & mask) \
- return addr_func (addr); \
- } \
- while (0)
-
-/* Define this to enable register lifetime checking.
- The compiler generates "add #0,rn" insns to mark registers as invalid,
- the simulator uses this info to call fail if it finds a ref to an invalid
- register before a def
-
- #define PARANOID
-*/
-
-#ifdef PARANOID
-int valid[16];
-#define CREF(x) if (!valid[x]) fail ();
-#define CDEF(x) valid[x] = 1;
-#define UNDEF(x) valid[x] = 0;
-#else
-#define CREF(x)
-#define CDEF(x)
-#define UNDEF(x)
-#endif
-
-static void parse_and_set_memory_size PARAMS ((char *str));
-static int IOMEM PARAMS ((int addr, int write, int value));
-static struct loop_bounds get_loop_bounds PARAMS ((int, int, unsigned char *,
- unsigned char *, int, int));
-static void process_wlat_addr PARAMS ((int, int));
-static void process_wwat_addr PARAMS ((int, int));
-static void process_wbat_addr PARAMS ((int, int));
-static int process_rlat_addr PARAMS ((int));
-static int process_rwat_addr PARAMS ((int));
-static int process_rbat_addr PARAMS ((int));
-static void INLINE wlat_fast PARAMS ((unsigned char *, int, int, int));
-static void INLINE wwat_fast PARAMS ((unsigned char *, int, int, int, int));
-static void INLINE wbat_fast PARAMS ((unsigned char *, int, int, int));
-static int INLINE rlat_fast PARAMS ((unsigned char *, int, int));
-static int INLINE rwat_fast PARAMS ((unsigned char *, int, int, int));
-static int INLINE rbat_fast PARAMS ((unsigned char *, int, int));
-
-static host_callback *callback;
-
-
-
-/* Floating point registers */
-
-#define DR(n) (get_dr (n))
-static double
-get_dr (n)
- int n;
-{
- n = (n & ~1);
- if (host_little_endian)
- {
- union
- {
- int i[2];
- double d;
- } dr;
- dr.i[1] = saved_state.asregs.fregs[0].i[n + 0];
- dr.i[0] = saved_state.asregs.fregs[0].i[n + 1];
- return dr.d;
- }
- else
- return (saved_state.asregs.fregs[0].d[n >> 1]);
-}
-
-#define SET_DR(n, EXP) set_dr ((n), (EXP))
-static void
-set_dr (n, exp)
- int n;
- double exp;
-{
- n = (n & ~1);
- if (host_little_endian)
- {
- union
- {
- int i[2];
- double d;
- } dr;
- dr.d = exp;
- saved_state.asregs.fregs[0].i[n + 0] = dr.i[1];
- saved_state.asregs.fregs[0].i[n + 1] = dr.i[0];
- }
- else
- saved_state.asregs.fregs[0].d[n >> 1] = exp;
-}
-
-#define SET_FI(n,EXP) (saved_state.asregs.fregs[0].i[(n)] = (EXP))
-#define FI(n) (saved_state.asregs.fregs[0].i[(n)])
-
-#define FR(n) (saved_state.asregs.fregs[0].f[(n)])
-#define SET_FR(n,EXP) (saved_state.asregs.fregs[0].f[(n)] = (EXP))
-
-#define XD_TO_XF(n) ((((n) & 1) << 5) | ((n) & 0x1e))
-#define XF(n) (saved_state.asregs.fregs[(n) >> 5].i[(n) & 0x1f])
-#define SET_XF(n,EXP) (saved_state.asregs.fregs[(n) >> 5].i[(n) & 0x1f] = (EXP))
-
-#define RS saved_state.asregs.cregs.named.rs
-#define RE saved_state.asregs.cregs.named.re
-#define MOD (saved_state.asregs.cregs.named.mod)
-#define SET_MOD(i) \
-(MOD = (i), \
- MOD_ME = (unsigned) MOD >> 16 | (SR_DMY ? ~0xffff : (SR_DMX ? 0 : 0x10000)), \
- MOD_DELTA = (MOD & 0xffff) - ((unsigned) MOD >> 16))
-
-#define DSP_R(n) saved_state.asregs.sregs.i[(n)]
-#define DSP_GRD(n) DSP_R ((n) + 8)
-#define GET_DSP_GRD(n) ((n | 2) == 7 ? SEXT (DSP_GRD (n)) : SIGN32 (DSP_R (n)))
-#define A1 DSP_R (5)
-#define A0 DSP_R (7)
-#define X0 DSP_R (8)
-#define X1 DSP_R (9)
-#define Y0 DSP_R (10)
-#define Y1 DSP_R (11)
-#define M0 DSP_R (12)
-#define A1G DSP_R (13)
-#define M1 DSP_R (14)
-#define A0G DSP_R (15)
-/* DSP_R (16) / DSP_GRD (16) are used as a fake destination for pcmp. */
-#define MOD_ME DSP_GRD (17)
-#define MOD_DELTA DSP_GRD (18)
-
-#define FP_OP(n, OP, m) \
-{ \
- if (FPSCR_PR) \
- { \
- if (((n) & 1) || ((m) & 1)) \
- RAISE_EXCEPTION (SIGILL); \
- else \
- SET_DR (n, (DR (n) OP DR (m))); \
- } \
- else \
- SET_FR (n, (FR (n) OP FR (m))); \
-} while (0)
-
-#define FP_UNARY(n, OP) \
-{ \
- if (FPSCR_PR) \
- { \
- if ((n) & 1) \
- RAISE_EXCEPTION (SIGILL); \
- else \
- SET_DR (n, (OP (DR (n)))); \
- } \
- else \
- SET_FR (n, (OP (FR (n)))); \
-} while (0)
-
-#define FP_CMP(n, OP, m) \
-{ \
- if (FPSCR_PR) \
- { \
- if (((n) & 1) || ((m) & 1)) \
- RAISE_EXCEPTION (SIGILL); \
- else \
- SET_SR_T (DR (n) OP DR (m)); \
- } \
- else \
- SET_SR_T (FR (n) OP FR (m)); \
-} while (0)
-
-static void
-set_sr (new_sr)
- int new_sr;
-{
- /* do we need to swap banks */
- int old_gpr = SR_MD && SR_RB;
- int new_gpr = (new_sr & SR_MASK_MD) && (new_sr & SR_MASK_RB);
- if (old_gpr != new_gpr)
- {
- int i, tmp;
- for (i = 0; i < 8; i++)
- {
- tmp = saved_state.asregs.cregs.named.bank[i];
- saved_state.asregs.cregs.named.bank[i] = saved_state.asregs.regs[i];
- saved_state.asregs.regs[i] = tmp;
- }
- }
- saved_state.asregs.cregs.named.sr = new_sr;
- SET_MOD (MOD);
-}
-
-static void INLINE
-wlat_fast (memory, x, value, maskl)
- unsigned char *memory;
-{
- int v = value;
- unsigned int *p = (unsigned int *) (memory + x);
- WRITE_BUSERROR (x, maskl, v, process_wlat_addr);
- *p = v;
-}
-
-static void INLINE
-wwat_fast (memory, x, value, maskw, endianw)
- unsigned char *memory;
-{
- int v = value;
- unsigned short *p = (unsigned short *) (memory + (x ^ endianw));
- WRITE_BUSERROR (x, maskw, v, process_wwat_addr);
- *p = v;
-}
-
-static void INLINE
-wbat_fast (memory, x, value, maskb)
- unsigned char *memory;
-{
- unsigned char *p = memory + (x ^ endianb);
- WRITE_BUSERROR (x, maskb, value, process_wbat_addr);
-
- p[0] = value;
-}
-
-/* Read functions */
-
-static int INLINE
-rlat_fast (memory, x, maskl)
- unsigned char *memory;
-{
- unsigned int *p = (unsigned int *) (memory + x);
- READ_BUSERROR (x, maskl, process_rlat_addr);
-
- return *p;
-}
-
-static int INLINE
-rwat_fast (memory, x, maskw, endianw)
- unsigned char *memory;
- int x, maskw, endianw;
-{
- unsigned short *p = (unsigned short *) (memory + (x ^ endianw));
- READ_BUSERROR (x, maskw, process_rwat_addr);
-
- return *p;
-}
-
-static int INLINE
-riat_fast (insn_ptr, endianw)
- unsigned char *insn_ptr;
-{
- unsigned short *p = (unsigned short *) ((size_t) insn_ptr ^ endianw);
-
- return *p;
-}
-
-static int INLINE
-rbat_fast (memory, x, maskb)
- unsigned char *memory;
-{
- unsigned char *p = memory + (x ^ endianb);
- READ_BUSERROR (x, maskb, process_rbat_addr);
-
- return *p;
-}
-
-#define RWAT(x) (rwat_fast (memory, x, maskw, endianw))
-#define RLAT(x) (rlat_fast (memory, x, maskl))
-#define RBAT(x) (rbat_fast (memory, x, maskb))
-#define RIAT(p) (riat_fast ((p), endianw))
-#define WWAT(x,v) (wwat_fast (memory, x, v, maskw, endianw))
-#define WLAT(x,v) (wlat_fast (memory, x, v, maskl))
-#define WBAT(x,v) (wbat_fast (memory, x, v, maskb))
-
-#define RUWAT(x) (RWAT (x) & 0xffff)
-#define RSWAT(x) ((short) (RWAT (x)))
-#define RSLAT(x) ((long) (RLAT (x)))
-#define RSBAT(x) (SEXT (RBAT (x)))
-
-#define RDAT(x, n) (do_rdat (memory, (x), (n), (maskl)))
-static int
-do_rdat (memory, x, n, maskl)
- char *memory;
- int x;
- int n;
- int maskl;
-{
- int f0;
- int f1;
- int i = (n & 1);
- int j = (n & ~1);
- f0 = rlat_fast (memory, x + 0, maskl);
- f1 = rlat_fast (memory, x + 4, maskl);
- saved_state.asregs.fregs[i].i[(j + 0)] = f0;
- saved_state.asregs.fregs[i].i[(j + 1)] = f1;
- return 0;
-}
-
-#define WDAT(x, n) (do_wdat (memory, (x), (n), (maskl)))
-static int
-do_wdat (memory, x, n, maskl)
- char *memory;
- int x;
- int n;
- int maskl;
-{
- int f0;
- int f1;
- int i = (n & 1);
- int j = (n & ~1);
- f0 = saved_state.asregs.fregs[i].i[(j + 0)];
- f1 = saved_state.asregs.fregs[i].i[(j + 1)];
- wlat_fast (memory, (x + 0), f0, maskl);
- wlat_fast (memory, (x + 4), f1, maskl);
- return 0;
-}
-
-static void
-process_wlat_addr (addr, value)
- int addr;
- int value;
-{
- unsigned int *ptr;
-
- PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, 32, 3, value, );
- *ptr = value;
-}
-
-static void
-process_wwat_addr (addr, value)
- int addr;
- int value;
-{
- unsigned short *ptr;
-
- PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, 16, 1, value, );
- *ptr = value;
-}
-
-static void
-process_wbat_addr (addr, value)
- int addr;
- int value;
-{
- unsigned char *ptr;
-
- PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, 8, 0, value, );
- *ptr = value;
-}
-
-static int
-process_rlat_addr (addr)
- int addr;
-{
- unsigned char *ptr;
-
- PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, -32, 3, -1, 0);
- return *ptr;
-}
-
-static int
-process_rwat_addr (addr)
- int addr;
-{
- unsigned char *ptr;
-
- PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, -16, 1, -1, 0);
- return *ptr;
-}
-
-static int
-process_rbat_addr (addr)
- int addr;
-{
- unsigned char *ptr;
-
- PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, -8, 0, -1, 0);
- return *ptr;
-}
-
-#define SEXT(x) (((x & 0xff) ^ (~0x7f))+0x80)
-#define SEXT12(x) (((x & 0xfff) ^ 0x800) - 0x800)
-#define SEXTW(y) ((int) ((short) y))
-#if 0
-#define SEXT32(x) ((int) ((x & 0xffffffff) ^ 0x80000000U) - 0x7fffffff - 1)
-#else
-#define SEXT32(x) ((int) (x))
-#endif
-#define SIGN32(x) (SEXT32 (x) >> 31)
-
-/* convert pointer from target to host value. */
-#define PT2H(x) ((x) + memory)
-/* convert pointer from host to target value. */
-#define PH2T(x) ((x) - memory)
-
-#define SKIP_INSN(p) ((p) += ((RIAT (p) & 0xfc00) == 0xf800 ? 4 : 2))
-
-#define SET_NIP(x) nip = (x); CHECK_INSN_PTR (nip);
-
-static int in_delay_slot = 0;
-#define Delay_Slot(TEMPPC) iword = RIAT (TEMPPC); in_delay_slot = 1; goto top;
-
-#define CHECK_INSN_PTR(p) \
-do { \
- if (saved_state.asregs.exception || PH2T (p) & maskw) \
- saved_state.asregs.insn_end = 0; \
- else if (p < loop.end) \
- saved_state.asregs.insn_end = loop.end; \
- else \
- saved_state.asregs.insn_end = mem_end; \
-} while (0)
-
-#ifdef ACE_FAST
-
-#define MA(n)
-#define L(x)
-#define TL(x)
-#define TB(x)
-
-#else
-
-#define MA(n) \
- do { memstalls += ((((int) PC & 3) != 0) ? (n) : ((n) - 1)); } while (0)
-
-#define L(x) thislock = x;
-#define TL(x) if ((x) == prevlock) stalls++;
-#define TB(x,y) if ((x) == prevlock || (y) == prevlock) stalls++;
-
-#endif
-
-#if defined(__GO32__)
-int sim_memory_size = 19;
-#else
-int sim_memory_size = 24;
-#endif
-
-static int sim_profile_size = 17;
-static int nsamples;
-
-#undef TB
-#define TB(x,y)
-
-#define SMR1 (0x05FFFEC8) /* Channel 1 serial mode register */
-#define BRR1 (0x05FFFEC9) /* Channel 1 bit rate register */
-#define SCR1 (0x05FFFECA) /* Channel 1 serial control register */
-#define TDR1 (0x05FFFECB) /* Channel 1 transmit data register */
-#define SSR1 (0x05FFFECC) /* Channel 1 serial status register */
-#define RDR1 (0x05FFFECD) /* Channel 1 receive data register */
-
-#define SCI_RDRF 0x40 /* Recieve data register full */
-#define SCI_TDRE 0x80 /* Transmit data register empty */
-
-static int
-IOMEM (addr, write, value)
- int addr;
- int write;
- int value;
-{
- if (write)
- {
- switch (addr)
- {
- case TDR1:
- if (value != '\r')
- {
- putchar (value);
- fflush (stdout);
- }
- break;
- }
- }
- else
- {
- switch (addr)
- {
- case RDR1:
- return getchar ();
- }
- }
- return 0;
-}
-
-static int
-get_now ()
-{
- return time ((long *) 0);
-}
-
-static int
-now_persec ()
-{
- return 1;
-}
-
-static FILE *profile_file;
-
-static unsigned INLINE
-swap (n)
- unsigned n;
-{
- if (endianb)
- n = (n << 24 | (n & 0xff00) << 8
- | (n & 0xff0000) >> 8 | (n & 0xff000000) >> 24);
- return n;
-}
-
-static unsigned short INLINE
-swap16 (n)
- unsigned short n;
-{
- if (endianb)
- n = n << 8 | (n & 0xff00) >> 8;
- return n;
-}
-
-static void
-swapout (n)
- int n;
-{
- if (profile_file)
- {
- union { char b[4]; int n; } u;
- u.n = swap (n);
- fwrite (u.b, 4, 1, profile_file);
- }
-}
-
-static void
-swapout16 (n)
- int n;
-{
- union { char b[4]; int n; } u;
- u.n = swap16 (n);
- fwrite (u.b, 2, 1, profile_file);
-}
-
-/* Turn a pointer in a register into a pointer into real memory. */
-
-static char *
-ptr (x)
- int x;
-{
- return (char *) (x + saved_state.asregs.memory);
-}
-
-/* STR points to a zero-terminated string in target byte order. Return
- the number of bytes that need to be converted to host byte order in order
- to use this string as a zero-terminated string on the host.
- (Not counting the rounding up needed to operate on entire words.) */
-static int
-strswaplen (str)
- int str;
-{
- unsigned char *memory = saved_state.asregs.memory;
- int start, end;
- int endian = endianb;
-
- if (! endian)
- return 0;
- end = str;
- for (end = str; memory[end ^ endian]; end++) ;
- return end - str + 1;
-}
-
-static void
-strnswap (str, len)
- int str;
- int len;
-{
- int *start, *end;
-
- if (! endianb || ! len)
- return;
- start = (int *) ptr (str & ~3);
- end = (int *) ptr (str + len);
- do
- {
- int old = *start;
- *start = (old << 24 | (old & 0xff00) << 8
- | (old & 0xff0000) >> 8 | (old & 0xff000000) >> 24);
- start++;
- }
- while (start < end);
-}
-
-/* Simulate a monitor trap, put the result into r0 and errno into r1
- return offset by which to adjust pc. */
-
-static int
-trap (i, regs, insn_ptr, memory, maskl, maskw, endianw)
- int i;
- int *regs;
- unsigned char *insn_ptr;
- unsigned char *memory;
-{
- switch (i)
- {
- case 1:
- printf ("%c", regs[0]);
- break;
- case 2:
- raise_exception (SIGQUIT);
- break;
- case 3: /* FIXME: for backwards compat, should be removed */
- case 33:
- {
- unsigned int countp = * (unsigned int *) (insn_ptr + 4);
-
- WLAT (countp, RLAT (countp) + 1);
- return 6;
- }
- case 34:
- {
- extern int errno;
- int perrno = errno;
- errno = 0;
-
- switch (regs[4])
- {
-
-#if !defined(__GO32__) && !defined(_WIN32)
- case SYS_fork:
- regs[0] = fork ();
- break;
-/* This would work only if endianness matched between host and target.
- Besides, it's quite dangerous. */
-#if 0
- case SYS_execve:
- regs[0] = execve (ptr (regs[5]), (char **) ptr (regs[6]),
- (char **) ptr (regs[7]));
- break;
- case SYS_execv:
- regs[0] = execve (ptr (regs[5]), (char **) ptr (regs[6]), 0);
- break;
-#endif
- case SYS_pipe:
- {
- regs[0] = (BUSERROR (regs[5], maskl)
- ? -EINVAL
- : pipe ((int *) ptr (regs[5])));
- }
- break;
-
- case SYS_wait:
- regs[0] = wait (ptr (regs[5]));
- break;
-#endif /* !defined(__GO32__) && !defined(_WIN32) */
-
- case SYS_read:
- strnswap (regs[6], regs[7]);
- regs[0]
- = callback->read (callback, regs[5], ptr (regs[6]), regs[7]);
- strnswap (regs[6], regs[7]);
- break;
- case SYS_write:
- strnswap (regs[6], regs[7]);
- if (regs[5] == 1)
- regs[0] = (int) callback->write_stdout (callback,
- ptr (regs[6]), regs[7]);
- else
- regs[0] = (int) callback->write (callback, regs[5],
- ptr (regs[6]), regs[7]);
- strnswap (regs[6], regs[7]);
- break;
- case SYS_lseek:
- regs[0] = callback->lseek (callback,regs[5], regs[6], regs[7]);
- break;
- case SYS_close:
- regs[0] = callback->close (callback,regs[5]);
- break;
- case SYS_open:
- {
- int len = strswaplen (regs[5]);
- strnswap (regs[5], len);
- regs[0] = callback->open (callback, ptr (regs[5]), regs[6]);
- strnswap (regs[5], len);
- break;
- }
- case SYS_exit:
- /* EXIT - caller can look in r5 to work out the reason */
- raise_exception (SIGQUIT);
- regs[0] = regs[5];
- break;
-
- case SYS_stat: /* added at hmsi */
- /* stat system call */
- {
- struct stat host_stat;
- int buf;
- int len = strswaplen (regs[5]);
-
- strnswap (regs[5], len);
- regs[0] = stat (ptr (regs[5]), &host_stat);
- strnswap (regs[5], len);
-
- buf = regs[6];
-
- WWAT (buf, host_stat.st_dev);
- buf += 2;
- WWAT (buf, host_stat.st_ino);
- buf += 2;
- WLAT (buf, host_stat.st_mode);
- buf += 4;
- WWAT (buf, host_stat.st_nlink);
- buf += 2;
- WWAT (buf, host_stat.st_uid);
- buf += 2;
- WWAT (buf, host_stat.st_gid);
- buf += 2;
- WWAT (buf, host_stat.st_rdev);
- buf += 2;
- WLAT (buf, host_stat.st_size);
- buf += 4;
- WLAT (buf, host_stat.st_atime);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- WLAT (buf, host_stat.st_mtime);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- WLAT (buf, host_stat.st_ctime);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- WLAT (buf, 0);
- buf += 4;
- }
- break;
-
-#ifndef _WIN32
- case SYS_chown:
- {
- int len = strswaplen (regs[5]);
-
- strnswap (regs[5], len);
- regs[0] = chown (ptr (regs[5]), regs[6], regs[7]);
- strnswap (regs[5], len);
- break;
- }
-#endif /* _WIN32 */
- case SYS_chmod:
- {
- int len = strswaplen (regs[5]);
-
- strnswap (regs[5], len);
- regs[0] = chmod (ptr (regs[5]), regs[6]);
- strnswap (regs[5], len);
- break;
- }
- case SYS_utime:
- {
- /* Cast the second argument to void *, to avoid type mismatch
- if a prototype is present. */
- int len = strswaplen (regs[5]);
-
- strnswap (regs[5], len);
- regs[0] = utime (ptr (regs[5]), (void *) ptr (regs[6]));
- strnswap (regs[5], len);
- break;
- }
- case SYS_argc:
- regs[0] = count_argc (prog_argv);
- break;
- case SYS_argnlen:
- if (regs[5] < count_argc (prog_argv))
- regs[0] = strlen (prog_argv[regs[5]]);
- else
- regs[0] = -1;
- break;
- case SYS_argn:
- if (regs[5] < count_argc (prog_argv))
- {
- /* Include the termination byte. */
- int i = strlen (prog_argv[regs[5]]) + 1;
- regs[0] = sim_write (0, regs[6], prog_argv[regs[5]], i);
- }
- else
- regs[0] = -1;
- break;
- case SYS_time:
- regs[0] = get_now ();
- break;
- case SYS_ftruncate:
- regs[0] = callback->ftruncate (callback, regs[5], regs[6]);
- break;
- case SYS_truncate:
- {
- int len = strswaplen (regs[5]);
- strnswap (regs[5], len);
- regs[0] = callback->truncate (callback, ptr (regs[5]), regs[6]);
- strnswap (regs[5], len);
- break;
- }
- default:
- regs[0] = -1;
- break;
- }
- regs[1] = callback->get_errno (callback);
- errno = perrno;
- }
- break;
-
- case 13: /* Set IBNR */
- IBNR = regs[0] & 0xffff;
- break;
- case 14: /* Set IBCR */
- IBCR = regs[0] & 0xffff;
- break;
- case 0xc3:
- case 255:
- raise_exception (SIGTRAP);
- if (i == 0xc3)
- return -2;
- break;
- }
- return 0;
-}
-
-void
-control_c (sig, code, scp, addr)
- int sig;
- int code;
- char *scp;
- char *addr;
-{
- raise_exception (SIGINT);
-}
-
-static int
-div1 (R, iRn2, iRn1/*, T*/)
- int *R;
- int iRn1;
- int iRn2;
- /* int T;*/
-{
- unsigned long tmp0;
- unsigned char old_q, tmp1;
-
- old_q = Q;
- SET_SR_Q ((unsigned char) ((0x80000000 & R[iRn1]) != 0));
- R[iRn1] <<= 1;
- R[iRn1] |= (unsigned long) T;
-
- switch (old_q)
- {
- case 0:
- switch (M)
- {
- case 0:
- tmp0 = R[iRn1];
- R[iRn1] -= R[iRn2];
- tmp1 = (R[iRn1] > tmp0);
- switch (Q)
- {
- case 0:
- SET_SR_Q (tmp1);
- break;
- case 1:
- SET_SR_Q ((unsigned char) (tmp1 == 0));
- break;
- }
- break;
- case 1:
- tmp0 = R[iRn1];
- R[iRn1] += R[iRn2];
- tmp1 = (R[iRn1] < tmp0);
- switch (Q)
- {
- case 0:
- SET_SR_Q ((unsigned char) (tmp1 == 0));
- break;
- case 1:
- SET_SR_Q (tmp1);
- break;
- }
- break;
- }
- break;
- case 1:
- switch (M)
- {
- case 0:
- tmp0 = R[iRn1];
- R[iRn1] += R[iRn2];
- tmp1 = (R[iRn1] < tmp0);
- switch (Q)
- {
- case 0:
- SET_SR_Q (tmp1);
- break;
- case 1:
- SET_SR_Q ((unsigned char) (tmp1 == 0));
- break;
- }
- break;
- case 1:
- tmp0 = R[iRn1];
- R[iRn1] -= R[iRn2];
- tmp1 = (R[iRn1] > tmp0);
- switch (Q)
- {
- case 0:
- SET_SR_Q ((unsigned char) (tmp1 == 0));
- break;
- case 1:
- SET_SR_Q (tmp1);
- break;
- }
- break;
- }
- break;
- }
- /*T = (Q == M);*/
- SET_SR_T (Q == M);
- /*return T;*/
-}
-
-static void
-dmul (sign, rm, rn)
- int sign;
- unsigned int rm;
- unsigned int rn;
-{
- unsigned long RnL, RnH;
- unsigned long RmL, RmH;
- unsigned long temp0, temp1, temp2, temp3;
- unsigned long Res2, Res1, Res0;
-
- RnL = rn & 0xffff;
- RnH = (rn >> 16) & 0xffff;
- RmL = rm & 0xffff;
- RmH = (rm >> 16) & 0xffff;
- temp0 = RmL * RnL;
- temp1 = RmH * RnL;
- temp2 = RmL * RnH;
- temp3 = RmH * RnH;
- Res2 = 0;
- Res1 = temp1 + temp2;
- if (Res1 < temp1)
- Res2 += 0x00010000;
- temp1 = (Res1 << 16) & 0xffff0000;
- Res0 = temp0 + temp1;
- if (Res0 < temp0)
- Res2 += 1;
- Res2 += ((Res1 >> 16) & 0xffff) + temp3;
-
- if (sign)
- {
- if (rn & 0x80000000)
- Res2 -= rm;
- if (rm & 0x80000000)
- Res2 -= rn;
- }
-
- MACH = Res2;
- MACL = Res0;
-}
-
-static void
-macw (regs, memory, n, m, endianw)
- int *regs;
- unsigned char *memory;
- int m, n;
- int endianw;
-{
- long tempm, tempn;
- long prod, macl, sum;
-
- tempm=RSWAT (regs[m]); regs[m]+=2;
- tempn=RSWAT (regs[n]); regs[n]+=2;
-
- macl = MACL;
- prod = (long) (short) tempm * (long) (short) tempn;
- sum = prod + macl;
- if (S)
- {
- if ((~(prod ^ macl) & (sum ^ prod)) < 0)
- {
- /* MACH's lsb is a sticky overflow bit. */
- MACH |= 1;
- /* Store the smallest negative number in MACL if prod is
- negative, and the largest positive number otherwise. */
- sum = 0x7fffffff + (prod < 0);
- }
- }
- else
- {
- long mach;
- /* Add to MACH the sign extended product, and carry from low sum. */
- mach = MACH + (-(prod < 0)) + ((unsigned long) sum < prod);
- /* Sign extend at 10:th bit in MACH. */
- MACH = (mach & 0x1ff) | -(mach & 0x200);
- }
- MACL = sum;
-}
-
-static void
-macl (regs, memory, n, m)
- int *regs;
- unsigned char *memory;
- int m, n;
-{
- long tempm, tempn;
- long prod, macl, mach, sum;
- long long ans,ansl,ansh,t;
- unsigned long long high,low,combine;
- union mac64
- {
- long m[2]; /* mach and macl*/
- long long m64; /* 64 bit MAC */
- }mac64;
-
- tempm = RSLAT (regs[m]);
- regs[m] += 4;
-
- tempn = RSLAT (regs[n]);
- regs[n] += 4;
-
- mach = MACH;
- macl = MACL;
-
- mac64.m[0] = macl;
- mac64.m[1] = mach;
-
- ans = (long long) tempm * (long long) tempn; /* Multiply 32bit * 32bit */
-
- mac64.m64 += ans; /* Accumulate 64bit + 64 bit */
-
- macl = mac64.m[0];
- mach = mac64.m[1];
-
- if (S) /* Store only 48 bits of the result */
- {
- if (mach < 0) /* Result is negative */
- {
- mach = mach & 0x0000ffff; /* Mask higher 16 bits */
- mach |= 0xffff8000; /* Sign extend higher 16 bits */
- }
- else
- mach = mach & 0x00007fff; /* Postive Result */
- }
-
- MACL = macl;
- MACH = mach;
-}
-
-enum {
- B_BCLR = 0,
- B_BSET = 1,
- B_BST = 2,
- B_BLD = 3,
- B_BAND = 4,
- B_BOR = 5,
- B_BXOR = 6,
- B_BLDNOT = 11,
- B_BANDNOT = 12,
- B_BORNOT = 13,
-
- MOVB_RM = 0x0000,
- MOVW_RM = 0x1000,
- MOVL_RM = 0x2000,
- FMOV_RM = 0x3000,
- MOVB_MR = 0x4000,
- MOVW_MR = 0x5000,
- MOVL_MR = 0x6000,
- FMOV_MR = 0x7000,
- MOVU_BMR = 0x8000,
- MOVU_WMR = 0x9000,
-};
-
-/* Do extended displacement move instructions. */
-void
-do_long_move_insn (int op, int disp12, int m, int n, int *thatlock)
-{
- int memstalls = 0;
- int thislock = *thatlock;
- int endianw = global_endianw;
- int *R = &(saved_state.asregs.regs[0]);
- unsigned char *memory = saved_state.asregs.memory;
- int maskb = ~((saved_state.asregs.msize - 1) & ~0);
- unsigned char *insn_ptr = PT2H (saved_state.asregs.pc);
-
- switch (op) {
- case MOVB_RM: /* signed */
- WBAT (disp12 * 1 + R[n], R[m]);
- break;
- case MOVW_RM:
- WWAT (disp12 * 2 + R[n], R[m]);
- break;
- case MOVL_RM:
- WLAT (disp12 * 4 + R[n], R[m]);
- break;
- case FMOV_RM: /* floating point */
- if (FPSCR_SZ)
- {
- MA (1);
- WDAT (R[n] + 8 * disp12, m);
- }
- else
- WLAT (R[n] + 4 * disp12, FI (m));
- break;
- case MOVB_MR:
- R[n] = RSBAT (disp12 * 1 + R[m]);
- L (n);
- break;
- case MOVW_MR:
- R[n] = RSWAT (disp12 * 2 + R[m]);
- L (n);
- break;
- case MOVL_MR:
- R[n] = RLAT (disp12 * 4 + R[m]);
- L (n);
- break;
- case FMOV_MR:
- if (FPSCR_SZ) {
- MA (1);
- RDAT (R[m] + 8 * disp12, n);
- }
- else
- SET_FI (n, RLAT (R[m] + 4 * disp12));
- break;
- case MOVU_BMR: /* unsigned */
- R[n] = RBAT (disp12 * 1 + R[m]);
- L (n);
- break;
- case MOVU_WMR:
- R[n] = RWAT (disp12 * 2 + R[m]);
- L (n);
- break;
- default:
- RAISE_EXCEPTION (SIGINT);
- exit (1);
- }
- saved_state.asregs.memstalls += memstalls;
- *thatlock = thislock;
-}
-
-/* Do binary logical bit-manipulation insns. */
-void
-do_blog_insn (int imm, int addr, int binop,
- unsigned char *memory, int maskb)
-{
- int oldval = RBAT (addr);
-
- switch (binop) {
- case B_BCLR: /* bclr.b */
- WBAT (addr, oldval & ~imm);
- break;
- case B_BSET: /* bset.b */
- WBAT (addr, oldval | imm);
- break;
- case B_BST: /* bst.b */
- if (T)
- WBAT (addr, oldval | imm);
- else
- WBAT (addr, oldval & ~imm);
- break;
- case B_BLD: /* bld.b */
- SET_SR_T ((oldval & imm) != 0);
- break;
- case B_BAND: /* band.b */
- SET_SR_T (T && ((oldval & imm) != 0));
- break;
- case B_BOR: /* bor.b */
- SET_SR_T (T || ((oldval & imm) != 0));
- break;
- case B_BXOR: /* bxor.b */
- SET_SR_T (T ^ ((oldval & imm) != 0));
- break;
- case B_BLDNOT: /* bldnot.b */
- SET_SR_T ((oldval & imm) == 0);
- break;
- case B_BANDNOT: /* bandnot.b */
- SET_SR_T (T && ((oldval & imm) == 0));
- break;
- case B_BORNOT: /* bornot.b */
- SET_SR_T (T || ((oldval & imm) == 0));
- break;
- }
-}
-float
-fsca_s (int in, double (*f) (double))
-{
- double rad = ldexp ((in & 0xffff), -15) * 3.141592653589793238462643383;
- double result = (*f) (rad);
- double error, upper, lower, frac;
- int exp;
-
- /* Search the value with the maximum error that is still within the
- architectural spec. */
- error = ldexp (1., -21);
- /* compensate for calculation inaccuracy by reducing error. */
- error = error - ldexp (1., -50);
- upper = result + error;
- frac = frexp (upper, &exp);
- upper = ldexp (floor (ldexp (frac, 24)), exp - 24);
- lower = result - error;
- frac = frexp (lower, &exp);
- lower = ldexp (ceil (ldexp (frac, 24)), exp - 24);
- return abs (upper - result) >= abs (lower - result) ? upper : lower;
-}
-
-float
-fsrra_s (float in)
-{
- double result = 1. / sqrt (in);
- int exp;
- double frac, upper, lower, error, eps;
-
- /* refine result */
- result = result - (result * result * in - 1) * 0.5 * result;
- /* Search the value with the maximum error that is still within the
- architectural spec. */
- frac = frexp (result, &exp);
- frac = ldexp (frac, 24);
- error = 4.0; /* 1 << 24-1-21 */
- /* use eps to compensate for possible 1 ulp error in our 'exact' result. */
- eps = ldexp (1., -29);
- upper = floor (frac + error - eps);
- if (upper > 16777216.)
- upper = floor ((frac + error - eps) * 0.5) * 2.;
- lower = ceil ((frac - error + eps) * 2) * .5;
- if (lower > 8388608.)
- lower = ceil (frac - error + eps);
- upper = ldexp (upper, exp - 24);
- lower = ldexp (lower, exp - 24);
- return upper - result >= result - lower ? upper : lower;
-}
-
-
-/* GET_LOOP_BOUNDS {EXTENDED}
- These two functions compute the actual starting and ending point
- of the repeat loop, based on the RS and RE registers (repeat start,
- repeat stop). The extended version is called for LDRC, and the
- regular version is called for SETRC. The difference is that for
- LDRC, the loop start and end instructions are literally the ones
- pointed to by RS and RE -- for SETRC, they're not (see docs). */
-
-static struct loop_bounds
-get_loop_bounds_ext (rs, re, memory, mem_end, maskw, endianw)
- int rs, re;
- unsigned char *memory, *mem_end;
- int maskw, endianw;
-{
- struct loop_bounds loop;
-
- /* FIXME: should I verify RS < RE? */
- loop.start = PT2H (RS); /* FIXME not using the params? */
- loop.end = PT2H (RE & ~1); /* Ignore bit 0 of RE. */
- SKIP_INSN (loop.end);
- if (loop.end >= mem_end)
- loop.end = PT2H (0);
- return loop;
-}
-
-static struct loop_bounds
-get_loop_bounds (rs, re, memory, mem_end, maskw, endianw)
- int rs, re;
- unsigned char *memory, *mem_end;
- int maskw, endianw;
-{
- struct loop_bounds loop;
-
- if (SR_RC)
- {
- if (RS >= RE)
- {
- loop.start = PT2H (RE - 4);
- SKIP_INSN (loop.start);
- loop.end = loop.start;
- if (RS - RE == 0)
- SKIP_INSN (loop.end);
- if (RS - RE <= 2)
- SKIP_INSN (loop.end);
- SKIP_INSN (loop.end);
- }
- else
- {
- loop.start = PT2H (RS);
- loop.end = PT2H (RE - 4);
- SKIP_INSN (loop.end);
- SKIP_INSN (loop.end);
- SKIP_INSN (loop.end);
- SKIP_INSN (loop.end);
- }
- if (loop.end >= mem_end)
- loop.end = PT2H (0);
- }
- else
- loop.end = PT2H (0);
-
- return loop;
-}
-
-static void ppi_insn ();
-
-#include "ppi.c"
-
-/* Provide calloc / free versions that use an anonymous mmap. This can
- significantly cut the start-up time when a large simulator memory is
- required, because pages are only zeroed on demand. */
-#ifdef MAP_ANONYMOUS
-void *
-mcalloc (size_t nmemb, size_t size)
-{
- void *page;
-
- if (nmemb != 1)
- size *= nmemb;
- return mmap (0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
- -1, 0);
-}
-
-#define mfree(start,length) munmap ((start), (length))
-#else
-#define mcalloc calloc
-#define mfree(start,length) free(start)
-#endif
-
-/* Set the memory size to the power of two provided. */
-
-void
-sim_size (power)
- int power;
-
-{
- sim_memory_size = power;
-
- if (saved_state.asregs.memory)
- {
- mfree (saved_state.asregs.memory, saved_state.asregs.msize);
- }
-
- saved_state.asregs.msize = 1 << power;
-
- saved_state.asregs.memory =
- (unsigned char *) mcalloc (1, saved_state.asregs.msize);
-
- if (!saved_state.asregs.memory)
- {
- fprintf (stderr,
- "Not enough VM for simulation of %d bytes of RAM\n",
- saved_state.asregs.msize);
-
- saved_state.asregs.msize = 1;
- saved_state.asregs.memory = (unsigned char *) mcalloc (1, 1);
- }
-}
-
-static void
-init_dsp (abfd)
- struct bfd *abfd;
-{
- int was_dsp = target_dsp;
- unsigned long mach = bfd_get_mach (abfd);
-
- if (mach == bfd_mach_sh_dsp ||
- mach == bfd_mach_sh4al_dsp ||
- mach == bfd_mach_sh3_dsp)
- {
- int ram_area_size, xram_start, yram_start;
- int new_select;
-
- target_dsp = 1;
- if (mach == bfd_mach_sh_dsp)
- {
- /* SH7410 (orig. sh-sdp):
- 4KB each for X & Y memory;
- On-chip X RAM 0x0800f000-0x0800ffff
- On-chip Y RAM 0x0801f000-0x0801ffff */
- xram_start = 0x0800f000;
- ram_area_size = 0x1000;
- }
- if (mach == bfd_mach_sh3_dsp || mach == bfd_mach_sh4al_dsp)
- {
- /* SH7612:
- 8KB each for X & Y memory;
- On-chip X RAM 0x1000e000-0x1000ffff
- On-chip Y RAM 0x1001e000-0x1001ffff */
- xram_start = 0x1000e000;
- ram_area_size = 0x2000;
- }
- yram_start = xram_start + 0x10000;
- new_select = ~(ram_area_size - 1);
- if (saved_state.asregs.xyram_select != new_select)
- {
- saved_state.asregs.xyram_select = new_select;
- free (saved_state.asregs.xmem);
- free (saved_state.asregs.ymem);
- saved_state.asregs.xmem =
- (unsigned char *) calloc (1, ram_area_size);
- saved_state.asregs.ymem =
- (unsigned char *) calloc (1, ram_area_size);
-
- /* Disable use of X / Y mmeory if not allocated. */
- if (! saved_state.asregs.xmem || ! saved_state.asregs.ymem)
- {
- saved_state.asregs.xyram_select = 0;
- if (saved_state.asregs.xmem)
- free (saved_state.asregs.xmem);
- if (saved_state.asregs.ymem)
- free (saved_state.asregs.ymem);
- }
- }
- saved_state.asregs.xram_start = xram_start;
- saved_state.asregs.yram_start = yram_start;
- saved_state.asregs.xmem_offset = saved_state.asregs.xmem - xram_start;
- saved_state.asregs.ymem_offset = saved_state.asregs.ymem - yram_start;
- }
- else
- {
- target_dsp = 0;
- if (saved_state.asregs.xyram_select)
- {
- saved_state.asregs.xyram_select = 0;
- free (saved_state.asregs.xmem);
- free (saved_state.asregs.ymem);
- }
- }
-
- if (! saved_state.asregs.xyram_select)
- {
- saved_state.asregs.xram_start = 1;
- saved_state.asregs.yram_start = 1;
- }
-
- if (saved_state.asregs.regstack == NULL)
- saved_state.asregs.regstack =
- calloc (512, sizeof *saved_state.asregs.regstack);
-
- if (target_dsp != was_dsp)
- {
- int i, tmp;
-
- for (i = (sizeof sh_dsp_table / sizeof sh_dsp_table[0]) - 1; i >= 0; i--)
- {
- tmp = sh_jump_table[0xf000 + i];
- sh_jump_table[0xf000 + i] = sh_dsp_table[i];
- sh_dsp_table[i] = tmp;
- }
- }
-}
-
-static void
-init_pointers ()
-{
- host_little_endian = 0;
- * (char*) &host_little_endian = 1;
- host_little_endian &= 1;
-
- if (saved_state.asregs.msize != 1 << sim_memory_size)
- {
- sim_size (sim_memory_size);
- }
-
- if (saved_state.asregs.profile && !profile_file)
- {
- profile_file = fopen ("gmon.out", "wb");
- /* Seek to where to put the call arc data */
- nsamples = (1 << sim_profile_size);
-
- fseek (profile_file, nsamples * 2 + 12, 0);
-
- if (!profile_file)
- {
- fprintf (stderr, "Can't open gmon.out\n");
- }
- else
- {
- saved_state.asregs.profile_hist =
- (unsigned short *) calloc (64, (nsamples * sizeof (short) / 64));
- }
- }
-}
-
-static void
-dump_profile ()
-{
- unsigned int minpc;
- unsigned int maxpc;
- unsigned short *p;
- int i;
-
- p = saved_state.asregs.profile_hist;
- minpc = 0;
- maxpc = (1 << sim_profile_size);
-
- fseek (profile_file, 0L, 0);
- swapout (minpc << PROFILE_SHIFT);
- swapout (maxpc << PROFILE_SHIFT);
- swapout (nsamples * 2 + 12);
- for (i = 0; i < nsamples; i++)
- swapout16 (saved_state.asregs.profile_hist[i]);
-
-}
-
-static void
-gotcall (from, to)
- int from;
- int to;
-{
- swapout (from);
- swapout (to);
- swapout (1);
-}
-
-#define MMASKB ((saved_state.asregs.msize -1) & ~0)
-
-int
-sim_stop (sd)
- SIM_DESC sd;
-{
- raise_exception (SIGINT);
- return 1;
-}
-
-void
-sim_resume (sd, step, siggnal)
- SIM_DESC sd;
- int step, siggnal;
-{
- register unsigned char *insn_ptr;
- unsigned char *mem_end;
- struct loop_bounds loop;
- register int cycles = 0;
- register int stalls = 0;
- register int memstalls = 0;
- register int insts = 0;
- register int prevlock;
-#if 1
- int thislock;
-#else
- register int thislock;
-#endif
- register unsigned int doprofile;
- register int pollcount = 0;
- /* endianw is used for every insn fetch, hence it makes sense to cache it.
- endianb is used less often. */
- register int endianw = global_endianw;
-
- int tick_start = get_now ();
- void (*prev) ();
- void (*prev_fpe) ();
-
- register unsigned short *jump_table = sh_jump_table;
-
- register int *R = &(saved_state.asregs.regs[0]);
- /*register int T;*/
-#ifndef PR
- register int PR;
-#endif
-
- register int maskb = ~((saved_state.asregs.msize - 1) & ~0);
- register int maskw = ~((saved_state.asregs.msize - 1) & ~1);
- register int maskl = ~((saved_state.asregs.msize - 1) & ~3);
- register unsigned char *memory;
- register unsigned int sbit = ((unsigned int) 1 << 31);
-
- prev = signal (SIGINT, control_c);
- prev_fpe = signal (SIGFPE, SIG_IGN);
-
- init_pointers ();
- saved_state.asregs.exception = 0;
-
- memory = saved_state.asregs.memory;
- mem_end = memory + saved_state.asregs.msize;
-
- if (RE & 1)
- loop = get_loop_bounds_ext (RS, RE, memory, mem_end, maskw, endianw);
- else
- loop = get_loop_bounds (RS, RE, memory, mem_end, maskw, endianw);
-
- insn_ptr = PT2H (saved_state.asregs.pc);
- CHECK_INSN_PTR (insn_ptr);
-
-#ifndef PR
- PR = saved_state.asregs.sregs.named.pr;
-#endif
- /*T = GET_SR () & SR_MASK_T;*/
- prevlock = saved_state.asregs.prevlock;
- thislock = saved_state.asregs.thislock;
- doprofile = saved_state.asregs.profile;
-
- /* If profiling not enabled, disable it by asking for
- profiles infrequently. */
- if (doprofile == 0)
- doprofile = ~0;
-
- loop:
- if (step && insn_ptr < saved_state.asregs.insn_end)
- {
- if (saved_state.asregs.exception)
- /* This can happen if we've already been single-stepping and
- encountered a loop end. */
- saved_state.asregs.insn_end = insn_ptr;
- else
- {
- saved_state.asregs.exception = SIGTRAP;
- saved_state.asregs.insn_end = insn_ptr + 2;
- }
- }
-
- while (insn_ptr < saved_state.asregs.insn_end)
- {
- register unsigned int iword = RIAT (insn_ptr);
- register unsigned int ult;
- register unsigned char *nip = insn_ptr + 2;
-
-#ifndef ACE_FAST
- insts++;
-#endif
- top:
- if (tracing)
- fprintf (stderr, "PC: %08x, insn: %04x\n", PH2T (insn_ptr), iword);
-
-#include "code.c"
-
-
- in_delay_slot = 0;
- insn_ptr = nip;
-
- if (--pollcount < 0)
- {
- pollcount = POLL_QUIT_INTERVAL;
- if ((*callback->poll_quit) != NULL
- && (*callback->poll_quit) (callback))
- {
- sim_stop (sd);
- }
- }
-
-#ifndef ACE_FAST
- prevlock = thislock;
- thislock = 30;
- cycles++;
-
- if (cycles >= doprofile)
- {
-
- saved_state.asregs.cycles += doprofile;
- cycles -= doprofile;
- if (saved_state.asregs.profile_hist)
- {
- int n = PH2T (insn_ptr) >> PROFILE_SHIFT;
- if (n < nsamples)
- {
- int i = saved_state.asregs.profile_hist[n];
- if (i < 65000)
- saved_state.asregs.profile_hist[n] = i + 1;
- }
-
- }
- }
-#endif
- }
- if (saved_state.asregs.insn_end == loop.end)
- {
- saved_state.asregs.cregs.named.sr += SR_RC_INCREMENT;
- if (SR_RC)
- insn_ptr = loop.start;
- else
- {
- saved_state.asregs.insn_end = mem_end;
- loop.end = PT2H (0);
- }
- goto loop;
- }
-
- if (saved_state.asregs.exception == SIGILL
- || saved_state.asregs.exception == SIGBUS)
- {
- insn_ptr -= 2;
- }
- /* Check for SIGBUS due to insn fetch. */
- else if (! saved_state.asregs.exception)
- saved_state.asregs.exception = SIGBUS;
-
- saved_state.asregs.ticks += get_now () - tick_start;
- saved_state.asregs.cycles += cycles;
- saved_state.asregs.stalls += stalls;
- saved_state.asregs.memstalls += memstalls;
- saved_state.asregs.insts += insts;
- saved_state.asregs.pc = PH2T (insn_ptr);
-#ifndef PR
- saved_state.asregs.sregs.named.pr = PR;
-#endif
-
- saved_state.asregs.prevlock = prevlock;
- saved_state.asregs.thislock = thislock;
-
- if (profile_file)
- {
- dump_profile ();
- }
-
- signal (SIGFPE, prev_fpe);
- signal (SIGINT, prev);
-}
-
-int
-sim_write (sd, addr, buffer, size)
- SIM_DESC sd;
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
-{
- int i;
-
- init_pointers ();
-
- for (i = 0; i < size; i++)
- {
- saved_state.asregs.memory[(MMASKB & (addr + i)) ^ endianb] = buffer[i];
- }
- return size;
-}
-
-int
-sim_read (sd, addr, buffer, size)
- SIM_DESC sd;
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
-{
- int i;
-
- init_pointers ();
-
- for (i = 0; i < size; i++)
- {
- buffer[i] = saved_state.asregs.memory[(MMASKB & (addr + i)) ^ endianb];
- }
- return size;
-}
-
-static int gdb_bank_number;
-enum {
- REGBANK_MACH = 15,
- REGBANK_IVN = 16,
- REGBANK_PR = 17,
- REGBANK_GBR = 18,
- REGBANK_MACL = 19
-};
-
-int
-sim_store_register (sd, rn, memory, length)
- SIM_DESC sd;
- int rn;
- unsigned char *memory;
- int length;
-{
- unsigned val;
-
- init_pointers ();
- val = swap (* (int *) memory);
- switch (rn)
- {
- case SIM_SH_R0_REGNUM: case SIM_SH_R1_REGNUM: case SIM_SH_R2_REGNUM:
- case SIM_SH_R3_REGNUM: case SIM_SH_R4_REGNUM: case SIM_SH_R5_REGNUM:
- case SIM_SH_R6_REGNUM: case SIM_SH_R7_REGNUM: case SIM_SH_R8_REGNUM:
- case SIM_SH_R9_REGNUM: case SIM_SH_R10_REGNUM: case SIM_SH_R11_REGNUM:
- case SIM_SH_R12_REGNUM: case SIM_SH_R13_REGNUM: case SIM_SH_R14_REGNUM:
- case SIM_SH_R15_REGNUM:
- saved_state.asregs.regs[rn] = val;
- break;
- case SIM_SH_PC_REGNUM:
- saved_state.asregs.pc = val;
- break;
- case SIM_SH_PR_REGNUM:
- PR = val;
- break;
- case SIM_SH_GBR_REGNUM:
- GBR = val;
- break;
- case SIM_SH_VBR_REGNUM:
- VBR = val;
- break;
- case SIM_SH_MACH_REGNUM:
- MACH = val;
- break;
- case SIM_SH_MACL_REGNUM:
- MACL = val;
- break;
- case SIM_SH_SR_REGNUM:
- SET_SR (val);
- break;
- case SIM_SH_FPUL_REGNUM:
- FPUL = val;
- break;
- case SIM_SH_FPSCR_REGNUM:
- SET_FPSCR (val);
- break;
- case SIM_SH_FR0_REGNUM: case SIM_SH_FR1_REGNUM: case SIM_SH_FR2_REGNUM:
- case SIM_SH_FR3_REGNUM: case SIM_SH_FR4_REGNUM: case SIM_SH_FR5_REGNUM:
- case SIM_SH_FR6_REGNUM: case SIM_SH_FR7_REGNUM: case SIM_SH_FR8_REGNUM:
- case SIM_SH_FR9_REGNUM: case SIM_SH_FR10_REGNUM: case SIM_SH_FR11_REGNUM:
- case SIM_SH_FR12_REGNUM: case SIM_SH_FR13_REGNUM: case SIM_SH_FR14_REGNUM:
- case SIM_SH_FR15_REGNUM:
- SET_FI (rn - SIM_SH_FR0_REGNUM, val);
- break;
- case SIM_SH_DSR_REGNUM:
- DSR = val;
- break;
- case SIM_SH_A0G_REGNUM:
- A0G = val;
- break;
- case SIM_SH_A0_REGNUM:
- A0 = val;
- break;
- case SIM_SH_A1G_REGNUM:
- A1G = val;
- break;
- case SIM_SH_A1_REGNUM:
- A1 = val;
- break;
- case SIM_SH_M0_REGNUM:
- M0 = val;
- break;
- case SIM_SH_M1_REGNUM:
- M1 = val;
- break;
- case SIM_SH_X0_REGNUM:
- X0 = val;
- break;
- case SIM_SH_X1_REGNUM:
- X1 = val;
- break;
- case SIM_SH_Y0_REGNUM:
- Y0 = val;
- break;
- case SIM_SH_Y1_REGNUM:
- Y1 = val;
- break;
- case SIM_SH_MOD_REGNUM:
- SET_MOD (val);
- break;
- case SIM_SH_RS_REGNUM:
- RS = val;
- break;
- case SIM_SH_RE_REGNUM:
- RE = val;
- break;
- case SIM_SH_SSR_REGNUM:
- SSR = val;
- break;
- case SIM_SH_SPC_REGNUM:
- SPC = val;
- break;
- /* The rn_bank idiosyncracies are not due to hardware differences, but to
- a weird aliasing naming scheme for sh3 / sh3e / sh4. */
- case SIM_SH_R0_BANK0_REGNUM: case SIM_SH_R1_BANK0_REGNUM:
- case SIM_SH_R2_BANK0_REGNUM: case SIM_SH_R3_BANK0_REGNUM:
- case SIM_SH_R4_BANK0_REGNUM: case SIM_SH_R5_BANK0_REGNUM:
- case SIM_SH_R6_BANK0_REGNUM: case SIM_SH_R7_BANK0_REGNUM:
- if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)
- {
- rn -= SIM_SH_R0_BANK0_REGNUM;
- saved_state.asregs.regstack[gdb_bank_number].regs[rn] = val;
- }
- else
- if (SR_MD && SR_RB)
- Rn_BANK (rn - SIM_SH_R0_BANK0_REGNUM) = val;
- else
- saved_state.asregs.regs[rn - SIM_SH_R0_BANK0_REGNUM] = val;
- break;
- case SIM_SH_R0_BANK1_REGNUM: case SIM_SH_R1_BANK1_REGNUM:
- case SIM_SH_R2_BANK1_REGNUM: case SIM_SH_R3_BANK1_REGNUM:
- case SIM_SH_R4_BANK1_REGNUM: case SIM_SH_R5_BANK1_REGNUM:
- case SIM_SH_R6_BANK1_REGNUM: case SIM_SH_R7_BANK1_REGNUM:
- if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)
- {
- rn -= SIM_SH_R0_BANK1_REGNUM;
- saved_state.asregs.regstack[gdb_bank_number].regs[rn + 8] = val;
- }
- else
- if (SR_MD && SR_RB)
- saved_state.asregs.regs[rn - SIM_SH_R0_BANK1_REGNUM] = val;
- else
- Rn_BANK (rn - SIM_SH_R0_BANK1_REGNUM) = val;
- break;
- case SIM_SH_R0_BANK_REGNUM: case SIM_SH_R1_BANK_REGNUM:
- case SIM_SH_R2_BANK_REGNUM: case SIM_SH_R3_BANK_REGNUM:
- case SIM_SH_R4_BANK_REGNUM: case SIM_SH_R5_BANK_REGNUM:
- case SIM_SH_R6_BANK_REGNUM: case SIM_SH_R7_BANK_REGNUM:
- SET_Rn_BANK (rn - SIM_SH_R0_BANK_REGNUM, val);
- break;
- case SIM_SH_TBR_REGNUM:
- TBR = val;
- break;
- case SIM_SH_IBNR_REGNUM:
- IBNR = val;
- break;
- case SIM_SH_IBCR_REGNUM:
- IBCR = val;
- break;
- case SIM_SH_BANK_REGNUM:
- /* This is a pseudo-register maintained just for gdb.
- It tells us what register bank gdb would like to read/write. */
- gdb_bank_number = val;
- break;
- case SIM_SH_BANK_MACL_REGNUM:
- saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_MACL] = val;
- break;
- case SIM_SH_BANK_GBR_REGNUM:
- saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_GBR] = val;
- break;
- case SIM_SH_BANK_PR_REGNUM:
- saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_PR] = val;
- break;
- case SIM_SH_BANK_IVN_REGNUM:
- saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_IVN] = val;
- break;
- case SIM_SH_BANK_MACH_REGNUM:
- saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_MACH] = val;
- break;
- default:
- return 0;
- }
- return -1;
-}
-
-int
-sim_fetch_register (sd, rn, memory, length)
- SIM_DESC sd;
- int rn;
- unsigned char *memory;
- int length;
-{
- int val;
-
- init_pointers ();
- switch (rn)
- {
- case SIM_SH_R0_REGNUM: case SIM_SH_R1_REGNUM: case SIM_SH_R2_REGNUM:
- case SIM_SH_R3_REGNUM: case SIM_SH_R4_REGNUM: case SIM_SH_R5_REGNUM:
- case SIM_SH_R6_REGNUM: case SIM_SH_R7_REGNUM: case SIM_SH_R8_REGNUM:
- case SIM_SH_R9_REGNUM: case SIM_SH_R10_REGNUM: case SIM_SH_R11_REGNUM:
- case SIM_SH_R12_REGNUM: case SIM_SH_R13_REGNUM: case SIM_SH_R14_REGNUM:
- case SIM_SH_R15_REGNUM:
- val = saved_state.asregs.regs[rn];
- break;
- case SIM_SH_PC_REGNUM:
- val = saved_state.asregs.pc;
- break;
- case SIM_SH_PR_REGNUM:
- val = PR;
- break;
- case SIM_SH_GBR_REGNUM:
- val = GBR;
- break;
- case SIM_SH_VBR_REGNUM:
- val = VBR;
- break;
- case SIM_SH_MACH_REGNUM:
- val = MACH;
- break;
- case SIM_SH_MACL_REGNUM:
- val = MACL;
- break;
- case SIM_SH_SR_REGNUM:
- val = GET_SR ();
- break;
- case SIM_SH_FPUL_REGNUM:
- val = FPUL;
- break;
- case SIM_SH_FPSCR_REGNUM:
- val = GET_FPSCR ();
- break;
- case SIM_SH_FR0_REGNUM: case SIM_SH_FR1_REGNUM: case SIM_SH_FR2_REGNUM:
- case SIM_SH_FR3_REGNUM: case SIM_SH_FR4_REGNUM: case SIM_SH_FR5_REGNUM:
- case SIM_SH_FR6_REGNUM: case SIM_SH_FR7_REGNUM: case SIM_SH_FR8_REGNUM:
- case SIM_SH_FR9_REGNUM: case SIM_SH_FR10_REGNUM: case SIM_SH_FR11_REGNUM:
- case SIM_SH_FR12_REGNUM: case SIM_SH_FR13_REGNUM: case SIM_SH_FR14_REGNUM:
- case SIM_SH_FR15_REGNUM:
- val = FI (rn - SIM_SH_FR0_REGNUM);
- break;
- case SIM_SH_DSR_REGNUM:
- val = DSR;
- break;
- case SIM_SH_A0G_REGNUM:
- val = SEXT (A0G);
- break;
- case SIM_SH_A0_REGNUM:
- val = A0;
- break;
- case SIM_SH_A1G_REGNUM:
- val = SEXT (A1G);
- break;
- case SIM_SH_A1_REGNUM:
- val = A1;
- break;
- case SIM_SH_M0_REGNUM:
- val = M0;
- break;
- case SIM_SH_M1_REGNUM:
- val = M1;
- break;
- case SIM_SH_X0_REGNUM:
- val = X0;
- break;
- case SIM_SH_X1_REGNUM:
- val = X1;
- break;
- case SIM_SH_Y0_REGNUM:
- val = Y0;
- break;
- case SIM_SH_Y1_REGNUM:
- val = Y1;
- break;
- case SIM_SH_MOD_REGNUM:
- val = MOD;
- break;
- case SIM_SH_RS_REGNUM:
- val = RS;
- break;
- case SIM_SH_RE_REGNUM:
- val = RE;
- break;
- case SIM_SH_SSR_REGNUM:
- val = SSR;
- break;
- case SIM_SH_SPC_REGNUM:
- val = SPC;
- break;
- /* The rn_bank idiosyncracies are not due to hardware differences, but to
- a weird aliasing naming scheme for sh3 / sh3e / sh4. */
- case SIM_SH_R0_BANK0_REGNUM: case SIM_SH_R1_BANK0_REGNUM:
- case SIM_SH_R2_BANK0_REGNUM: case SIM_SH_R3_BANK0_REGNUM:
- case SIM_SH_R4_BANK0_REGNUM: case SIM_SH_R5_BANK0_REGNUM:
- case SIM_SH_R6_BANK0_REGNUM: case SIM_SH_R7_BANK0_REGNUM:
- if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)
- {
- rn -= SIM_SH_R0_BANK0_REGNUM;
- val = saved_state.asregs.regstack[gdb_bank_number].regs[rn];
- }
- else
- val = (SR_MD && SR_RB
- ? Rn_BANK (rn - SIM_SH_R0_BANK0_REGNUM)
- : saved_state.asregs.regs[rn - SIM_SH_R0_BANK0_REGNUM]);
- break;
- case SIM_SH_R0_BANK1_REGNUM: case SIM_SH_R1_BANK1_REGNUM:
- case SIM_SH_R2_BANK1_REGNUM: case SIM_SH_R3_BANK1_REGNUM:
- case SIM_SH_R4_BANK1_REGNUM: case SIM_SH_R5_BANK1_REGNUM:
- case SIM_SH_R6_BANK1_REGNUM: case SIM_SH_R7_BANK1_REGNUM:
- if (saved_state.asregs.bfd_mach == bfd_mach_sh2a)
- {
- rn -= SIM_SH_R0_BANK1_REGNUM;
- val = saved_state.asregs.regstack[gdb_bank_number].regs[rn + 8];
- }
- else
- val = (! SR_MD || ! SR_RB
- ? Rn_BANK (rn - SIM_SH_R0_BANK1_REGNUM)
- : saved_state.asregs.regs[rn - SIM_SH_R0_BANK1_REGNUM]);
- break;
- case SIM_SH_R0_BANK_REGNUM: case SIM_SH_R1_BANK_REGNUM:
- case SIM_SH_R2_BANK_REGNUM: case SIM_SH_R3_BANK_REGNUM:
- case SIM_SH_R4_BANK_REGNUM: case SIM_SH_R5_BANK_REGNUM:
- case SIM_SH_R6_BANK_REGNUM: case SIM_SH_R7_BANK_REGNUM:
- val = Rn_BANK (rn - SIM_SH_R0_BANK_REGNUM);
- break;
- case SIM_SH_TBR_REGNUM:
- val = TBR;
- break;
- case SIM_SH_IBNR_REGNUM:
- val = IBNR;
- break;
- case SIM_SH_IBCR_REGNUM:
- val = IBCR;
- break;
- case SIM_SH_BANK_REGNUM:
- /* This is a pseudo-register maintained just for gdb.
- It tells us what register bank gdb would like to read/write. */
- val = gdb_bank_number;
- break;
- case SIM_SH_BANK_MACL_REGNUM:
- val = saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_MACL];
- break;
- case SIM_SH_BANK_GBR_REGNUM:
- val = saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_GBR];
- break;
- case SIM_SH_BANK_PR_REGNUM:
- val = saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_PR];
- break;
- case SIM_SH_BANK_IVN_REGNUM:
- val = saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_IVN];
- break;
- case SIM_SH_BANK_MACH_REGNUM:
- val = saved_state.asregs.regstack[gdb_bank_number].regs[REGBANK_MACH];
- break;
- default:
- return 0;
- }
- * (int *) memory = swap (val);
- return -1;
-}
-
-int
-sim_trace (sd)
- SIM_DESC sd;
-{
- tracing = 1;
- sim_resume (sd, 0, 0);
- tracing = 0;
- return 1;
-}
-
-void
-sim_stop_reason (sd, reason, sigrc)
- SIM_DESC sd;
- enum sim_stop *reason;
- int *sigrc;
-{
- /* The SH simulator uses SIGQUIT to indicate that the program has
- exited, so we must check for it here and translate it to exit. */
- if (saved_state.asregs.exception == SIGQUIT)
- {
- *reason = sim_exited;
- *sigrc = saved_state.asregs.regs[5];
- }
- else
- {
- *reason = sim_stopped;
- *sigrc = saved_state.asregs.exception;
- }
-}
-
-void
-sim_info (sd, verbose)
- SIM_DESC sd;
- int verbose;
-{
- double timetaken =
- (double) saved_state.asregs.ticks / (double) now_persec ();
- double virttime = saved_state.asregs.cycles / 36.0e6;
-
- callback->printf_filtered (callback, "\n\n# instructions executed %10d\n",
- saved_state.asregs.insts);
- callback->printf_filtered (callback, "# cycles %10d\n",
- saved_state.asregs.cycles);
- callback->printf_filtered (callback, "# pipeline stalls %10d\n",
- saved_state.asregs.stalls);
- callback->printf_filtered (callback, "# misaligned load/store %10d\n",
- saved_state.asregs.memstalls);
- callback->printf_filtered (callback, "# real time taken %10.4f\n",
- timetaken);
- callback->printf_filtered (callback, "# virtual time taken %10.4f\n",
- virttime);
- callback->printf_filtered (callback, "# profiling size %10d\n",
- sim_profile_size);
- callback->printf_filtered (callback, "# profiling frequency %10d\n",
- saved_state.asregs.profile);
- callback->printf_filtered (callback, "# profile maxpc %10x\n",
- (1 << sim_profile_size) << PROFILE_SHIFT);
-
- if (timetaken != 0)
- {
- callback->printf_filtered (callback, "# cycles/second %10d\n",
- (int) (saved_state.asregs.cycles / timetaken));
- callback->printf_filtered (callback, "# simulation ratio %10.4f\n",
- virttime / timetaken);
- }
-}
-
-void
-sim_set_profile (n)
- int n;
-{
- saved_state.asregs.profile = n;
-}
-
-void
-sim_set_profile_size (n)
- int n;
-{
- sim_profile_size = n;
-}
-
-SIM_DESC
-sim_open (kind, cb, abfd, argv)
- SIM_OPEN_KIND kind;
- host_callback *cb;
- struct bfd *abfd;
- char **argv;
-{
- char **p;
- int endian_set = 0;
- int i;
- union
- {
- int i;
- short s[2];
- char c[4];
- }
- mem_word;
-
- sim_kind = kind;
- myname = argv[0];
- callback = cb;
-
- for (p = argv + 1; *p != NULL; ++p)
- {
- if (strcmp (*p, "-E") == 0)
- {
- ++p;
- if (*p == NULL)
- {
- /* FIXME: This doesn't use stderr, but then the rest of the
- file doesn't either. */
- callback->printf_filtered (callback, "Missing argument to `-E'.\n");
- return 0;
- }
- target_little_endian = strcmp (*p, "big") != 0;
- endian_set = 1;
- }
- else if (isdigit (**p))
- parse_and_set_memory_size (*p);
- }
-
- if (abfd != NULL && ! endian_set)
- target_little_endian = ! bfd_big_endian (abfd);
-
- if (abfd)
- init_dsp (abfd);
-
- for (i = 4; (i -= 2) >= 0; )
- mem_word.s[i >> 1] = i;
- global_endianw = mem_word.i >> (target_little_endian ? 0 : 16) & 0xffff;
-
- for (i = 4; --i >= 0; )
- mem_word.c[i] = i;
- endianb = mem_word.i >> (target_little_endian ? 0 : 24) & 0xff;
-
- /* fudge our descriptor for now */
- return (SIM_DESC) 1;
-}
-
-static void
-parse_and_set_memory_size (str)
- char *str;
-{
- int n;
-
- n = strtol (str, NULL, 10);
- if (n > 0 && n <= 24)
- sim_memory_size = n;
- else
- callback->printf_filtered (callback, "Bad memory size %d; must be 1 to 24, inclusive\n", n);
-}
-
-void
-sim_close (sd, quitting)
- SIM_DESC sd;
- int quitting;
-{
- /* nothing to do */
-}
-
-SIM_RC
-sim_load (sd, prog, abfd, from_tty)
- SIM_DESC sd;
- char *prog;
- bfd *abfd;
- int from_tty;
-{
- extern bfd *sim_load_file (); /* ??? Don't know where this should live. */
- bfd *prog_bfd;
-
- prog_bfd = sim_load_file (sd, myname, callback, prog, abfd,
- sim_kind == SIM_OPEN_DEBUG,
- 0, sim_write);
-
- /* Set the bfd machine type. */
- if (prog_bfd)
- saved_state.asregs.bfd_mach = bfd_get_mach (prog_bfd);
- else if (abfd)
- saved_state.asregs.bfd_mach = bfd_get_mach (abfd);
- else
- saved_state.asregs.bfd_mach = 0;
-
- if (prog_bfd == NULL)
- return SIM_RC_FAIL;
- if (abfd == NULL)
- bfd_close (prog_bfd);
- return SIM_RC_OK;
-}
-
-SIM_RC
-sim_create_inferior (sd, prog_bfd, argv, env)
- SIM_DESC sd;
- struct bfd *prog_bfd;
- char **argv;
- char **env;
-{
- /* Clear the registers. */
- memset (&saved_state, 0,
- (char*) &saved_state.asregs.end_of_registers - (char*) &saved_state);
-
- /* Set the PC. */
- if (prog_bfd != NULL)
- saved_state.asregs.pc = bfd_get_start_address (prog_bfd);
-
- /* Set the bfd machine type. */
- if (prog_bfd != NULL)
- saved_state.asregs.bfd_mach = bfd_get_mach (prog_bfd);
-
- /* Record the program's arguments. */
- prog_argv = argv;
-
- return SIM_RC_OK;
-}
-
-void
-sim_do_command (sd, cmd)
- SIM_DESC sd;
- char *cmd;
-{
- char *sms_cmd = "set-memory-size";
- int cmdsize;
-
- if (cmd == NULL || *cmd == '\0')
- {
- cmd = "help";
- }
-
- cmdsize = strlen (sms_cmd);
- if (strncmp (cmd, sms_cmd, cmdsize) == 0
- && strchr (" \t", cmd[cmdsize]) != NULL)
- {
- parse_and_set_memory_size (cmd + cmdsize + 1);
- }
- else if (strcmp (cmd, "help") == 0)
- {
- (callback->printf_filtered) (callback,
- "List of SH simulator commands:\n\n");
- (callback->printf_filtered) (callback, "set-memory-size <n> -- Set the number of address bits to use\n");
- (callback->printf_filtered) (callback, "\n");
- }
- else
- {
- (callback->printf_filtered) (callback, "Error: \"%s\" is not a valid SH simulator command.\n", cmd);
- }
-}
-
-void
-sim_set_callbacks (p)
- host_callback *p;
-{
- callback = p;
-}
generated by cgit v1.1 at 2025-04-04 11:42:37 +0000