+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. */
+static 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;
+ }
+}
+
+static 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;
+}
+
+static 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 (int rs, int re, unsigned char *memory,
+ unsigned char *mem_end, int maskw, int 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 (int rs, int re, unsigned char *memory, unsigned char *mem_end,
+ int maskw, int 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
+static 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. */
+
+static void
+sim_size (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 (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 = ARRAY_SIZE (sh_dsp_table) - 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 (void)