--- /dev/null
+/* unwind-ia64.c -- utility routines to dump IA-64 unwind info for readelf.
+ Copyright 2000, 2001 Free Software Foundation, Inc.
+ Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+This file is part of GNU Binutils.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "unwind-ia64.h"
+#include <stdio.h>
+#include <string.h>
+
+#if __GNUC__ >= 2
+/* Define BFD64 here, even if our default architecture is 32 bit ELF
+ as this will allow us to read in and parse 64bit and 32bit ELF files.
+ Only do this if we belive that the compiler can support a 64 bit
+ data type. For now we only rely on GCC being able to do this. */
+#define BFD64
+#endif
+#include "bfd.h"
+
+static bfd_vma unw_rlen = 0;
+
+static void unw_print_brmask PARAMS ((char *, unsigned int));
+static void unw_print_grmask PARAMS ((char *, unsigned int));
+static void unw_print_frmask PARAMS ((char *, unsigned int));
+static void unw_print_abreg PARAMS ((char *, unsigned int));
+static void unw_print_xyreg PARAMS ((char *, unsigned int, unsigned int));
+
+static void
+unw_print_brmask (cp, mask)
+ char * cp;
+ unsigned int mask;
+{
+ int sep = 0;
+ int i;
+
+ for (i = 0; mask && (i < 5); ++i)
+ {
+ if (mask & 1)
+ {
+ if (sep)
+ *cp++ = ',';
+ *cp++ = 'b';
+ *cp++ = i + 1 + '0';
+ sep = 1;
+ }
+ mask >>= 1;
+ }
+ *cp = '\0';
+}
+
+static void
+unw_print_grmask (cp, mask)
+ char * cp;
+ unsigned int mask;
+{
+ int sep = 0;
+ int i;
+
+ for (i = 0; i < 4; ++i)
+ {
+ if (mask & 1)
+ {
+ if (sep)
+ *cp++ = ',';
+ *cp++ = 'r';
+ *cp++ = i + 4 + '0';
+ sep = 1;
+ }
+ mask >>= 1;
+ }
+ *cp = '\0';
+}
+
+static void
+unw_print_frmask (cp, mask)
+ char * cp;
+ unsigned int mask;
+{
+ int sep = 0;
+ int i;
+
+ for (i = 0; i < 20; ++i)
+ {
+ if (mask & 1)
+ {
+ if (sep)
+ *cp++ = ',';
+ *cp++ = 'f';
+ if (i < 4)
+ *cp++ = i + 2 + '0';
+ else
+ {
+ *cp++ = (i + 2) / 10 + 1 + '0';
+ *cp++ = (i + 2) % 10 + '0';
+ }
+ sep = 1;
+ }
+ mask >>= 1;
+ }
+ *cp = '\0';
+}
+
+static void
+unw_print_abreg (cp, abreg)
+ char * cp;
+ unsigned int abreg;
+{
+ static const char *special_reg[16] =
+ {
+ "pr", "psp", "@priunat", "rp", "ar.bsp", "ar.bspstore", "ar.rnat",
+ "ar.unat", "ar.fpsr", "ar.pfs", "ar.lc",
+ "Unknown11", "Unknown12", "Unknown13", "Unknown14", "Unknown15"
+ };
+
+ switch ((abreg >> 5) & 0x3)
+ {
+ case 0: /* gr */
+ sprintf (cp, "r%u", (abreg & 0x1f));
+ break;
+
+ case 1: /* fr */
+ sprintf (cp, "f%u", (abreg & 0x1f));
+ break;
+
+ case 2: /* br */
+ sprintf (cp, "b%u", (abreg & 0x1f));
+ break;
+
+ case 3: /* special */
+ strcpy (cp, special_reg[abreg & 0xf]);
+ break;
+ }
+}
+
+static void
+unw_print_xyreg (cp, x, ytreg)
+ char * cp;
+ unsigned int x;
+ unsigned int ytreg;
+{
+ switch ((x << 1) | ((ytreg >> 7) & 1))
+ {
+ case 0: /* gr */
+ sprintf (cp, "r%u", (ytreg & 0x1f));
+ break;
+
+ case 1: /* fr */
+ sprintf (cp, "f%u", (ytreg & 0x1f));
+ break;
+
+ case 2: /* br */
+ sprintf (cp, "b%u", (ytreg & 0x1f));
+ break;
+ }
+}
+
+#define UNW_REG_BSP "bsp"
+#define UNW_REG_BSPSTORE "bspstore"
+#define UNW_REG_FPSR "fpsr"
+#define UNW_REG_LC "lc"
+#define UNW_REG_PFS "pfs"
+#define UNW_REG_PR "pr"
+#define UNW_REG_PSP "psp"
+#define UNW_REG_RNAT "rnat"
+#define UNW_REG_RP "rp"
+#define UNW_REG_UNAT "unat"
+
+typedef bfd_vma unw_word;
+
+#define UNW_DEC_BAD_CODE(code) \
+ printf ("Unknown code 0x%02x\n", code)
+
+#define UNW_DEC_PROLOGUE(fmt, body, rlen, arg) \
+ do \
+ { \
+ unw_rlen = rlen; \
+ *(int *)arg = body; \
+ printf (" %s:%s(rlen=%lu)\n", \
+ fmt, body ? "body" : "prologue", (unsigned long) rlen); \
+ } \
+ while (0)
+
+#define UNW_DEC_PROLOGUE_GR(fmt, rlen, mask, grsave, arg) \
+ do \
+ { \
+ char regname[16], maskstr[64], *sep; \
+ \
+ unw_rlen = rlen; \
+ *(int *)arg = 0; \
+ \
+ maskstr[0] = '\0'; \
+ sep = ""; \
+ if (mask & 0x8) \
+ { \
+ strcat (maskstr, "rp"); \
+ sep = ","; \
+ } \
+ if (mask & 0x4) \
+ { \
+ strcat (maskstr, sep); \
+ strcat (maskstr, "ar.pfs"); \
+ sep = ","; \
+ } \
+ if (mask & 0x2) \
+ { \
+ strcat (maskstr, sep); \
+ strcat (maskstr, "psp"); \
+ sep = ","; \
+ } \
+ if (mask & 0x1) \
+ { \
+ strcat (maskstr, sep); \
+ strcat (maskstr, "pr"); \
+ } \
+ sprintf (regname, "r%u", grsave); \
+ printf (" %s:prologue_gr(mask=[%s],grsave=%s,rlen=%lu)\n", \
+ fmt, maskstr, regname, (unsigned long) rlen); \
+ } \
+ while (0)
+
+#define UNW_DEC_FR_MEM(fmt, frmask, arg) \
+ do \
+ { \
+ char frstr[200]; \
+ \
+ unw_print_frmask (frstr, frmask); \
+ printf ("\t%s:fr_mem(frmask=[%s])\n", fmt, frstr); \
+ } \
+ while (0)
+
+#define UNW_DEC_GR_MEM(fmt, grmask, arg) \
+ do \
+ { \
+ char grstr[200]; \
+ \
+ unw_print_grmask (grstr, grmask); \
+ printf ("\t%s:gr_mem(grmask=[%s])\n", fmt, grstr); \
+ } \
+ while (0)
+
+#define UNW_DEC_FRGR_MEM(fmt, grmask, frmask, arg) \
+ do \
+ { \
+ char frstr[200], grstr[20]; \
+ \
+ unw_print_grmask (grstr, grmask); \
+ unw_print_frmask (frstr, frmask); \
+ printf ("\t%s:frgr_mem(grmask=[%s],frmask=[%s])\n", fmt, grstr, frstr); \
+ } \
+ while (0)
+
+#define UNW_DEC_BR_MEM(fmt, brmask, arg) \
+ do \
+ { \
+ char brstr[20]; \
+ \
+ unw_print_brmask (brstr, brmask); \
+ printf ("\t%s:br_mem(brmask=[%s])\n", fmt, brstr); \
+ } \
+ while (0)
+
+#define UNW_DEC_BR_GR(fmt, brmask, gr, arg) \
+ do \
+ { \
+ char brstr[20]; \
+ \
+ unw_print_brmask (brstr, brmask); \
+ printf ("\t%s:br_gr(brmask=[%s],gr=r%u)\n", fmt, brstr, gr); \
+ } \
+ while (0)
+
+#define UNW_DEC_REG_GR(fmt, src, dst, arg) \
+ printf ("\t%s:%s_gr(reg=r%u)\n", fmt, src, dst)
+
+#define UNW_DEC_RP_BR(fmt, dst, arg) \
+ printf ("\t%s:rp_br(reg=b%u)\n", fmt, dst)
+
+#define UNW_DEC_REG_WHEN(fmt, reg, t, arg) \
+ printf ("\t%s:%s_when(t=%lu)\n", fmt, reg, (unsigned long) t)
+
+#define UNW_DEC_REG_SPREL(fmt, reg, spoff, arg) \
+ printf ("\t%s:%s_sprel(spoff=0x%lx)\n", \
+ fmt, reg, 4*(unsigned long)spoff)
+
+#define UNW_DEC_REG_PSPREL(fmt, reg, pspoff, arg) \
+ printf ("\t%s:%s_psprel(pspoff=0x10-0x%lx)\n", \
+ fmt, reg, 4*(unsigned long)pspoff)
+
+#define UNW_DEC_GR_GR(fmt, grmask, gr, arg) \
+ do \
+ { \
+ char grstr[20]; \
+ \
+ unw_print_grmask (grstr, grmask); \
+ printf ("\t%s:gr_gr(grmask=[%s],r%u)\n", fmt, grstr, gr); \
+ } \
+ while (0)
+
+#define UNW_DEC_ABI(fmt, abi, context, arg) \
+ do \
+ { \
+ static const char *abiname[] = \
+ { \
+ "@svr4", "@hpux", "@nt" \
+ }; \
+ char buf[20]; \
+ const char *abistr = buf; \
+ \
+ if (abi < 3) \
+ abistr = abiname[abi]; \
+ else \
+ sprintf (buf, "0x%x", abi); \
+ printf ("\t%s:unwabi(abi=%s,context=0x%02x)\n", \
+ fmt, abistr, context); \
+ } \
+ while (0)
+
+#define UNW_DEC_PRIUNAT_GR(fmt, r, arg) \
+ printf ("\t%s:priunat_gr(reg=r%u)\n", fmt, r)
+
+#define UNW_DEC_PRIUNAT_WHEN_GR(fmt, t, arg) \
+ printf ("\t%s:priunat_when_gr(t=%lu)\n", fmt, (unsigned long) t)
+
+#define UNW_DEC_PRIUNAT_WHEN_MEM(fmt, t, arg) \
+ printf ("\t%s:priunat_when_mem(t=%lu)\n", fmt, (unsigned long) t)
+
+#define UNW_DEC_PRIUNAT_PSPREL(fmt, pspoff, arg) \
+ printf ("\t%s:priunat_psprel(pspoff=0x10-0x%lx)\n", \
+ fmt, 4*(unsigned long)pspoff)
+
+#define UNW_DEC_PRIUNAT_SPREL(fmt, spoff, arg) \
+ printf ("\t%s:priunat_sprel(spoff=0x%lx)\n", \
+ fmt, 4*(unsigned long)spoff)
+
+#define UNW_DEC_MEM_STACK_F(fmt, t, size, arg) \
+ printf ("\t%s:mem_stack_f(t=%lu,size=%lu)\n", \
+ fmt, (unsigned long) t, 16*(unsigned long)size)
+
+#define UNW_DEC_MEM_STACK_V(fmt, t, arg) \
+ printf ("\t%s:mem_stack_v(t=%lu)\n", fmt, (unsigned long) t)
+
+#define UNW_DEC_SPILL_BASE(fmt, pspoff, arg) \
+ printf ("\t%s:spill_base(pspoff=0x10-0x%lx)\n", \
+ fmt, 4*(unsigned long)pspoff)
+
+#define UNW_DEC_SPILL_MASK(fmt, dp, arg) \
+ do \
+ { \
+ static const char * spill_type = "-frb"; \
+ unsigned const char * imaskp = dp; \
+ unsigned char mask = 0; \
+ bfd_vma insn = 0; \
+ \
+ printf ("\t%s:spill_mask(imask=[", fmt); \
+ for (insn = 0; insn < unw_rlen; ++insn) \
+ { \
+ if ((insn % 4) == 0) \
+ mask = *imaskp++; \
+ if (insn > 0 && (insn % 3) == 0) \
+ putchar (','); \
+ putchar (spill_type[(mask >> (2 * (3 - (insn & 0x3)))) & 0x3]); \
+ } \
+ printf ("])\n"); \
+ dp = imaskp; \
+ } \
+ while (0)
+
+#define UNW_DEC_SPILL_SPREL(fmt, t, abreg, spoff, arg) \
+ do \
+ { \
+ char regname[10]; \
+ \
+ unw_print_abreg (regname, abreg); \
+ printf ("\t%s:spill_sprel(reg=%s,t=%lu,spoff=0x%lx)\n", \
+ fmt, regname, (unsigned long) t, 4*(unsigned long)off); \
+ } \
+ while (0)
+
+#define UNW_DEC_SPILL_PSPREL(fmt, t, abreg, pspoff, arg) \
+ do \
+ { \
+ char regname[10]; \
+ \
+ unw_print_abreg (regname, abreg); \
+ printf ("\t%s:spill_psprel(reg=%s,t=%lu,pspoff=0x10-0x%lx)\n", \
+ fmt, regname, (unsigned long) t, 4*(unsigned long)pspoff); \
+ } \
+ while (0)
+
+#define UNW_DEC_RESTORE(fmt, t, abreg, arg) \
+ do \
+ { \
+ char regname[10]; \
+ \
+ unw_print_abreg (regname, abreg); \
+ printf ("\t%s:restore(t=%lu,reg=%s)\n", \
+ fmt, (unsigned long) t, regname); \
+ } \
+ while (0)
+
+#define UNW_DEC_SPILL_REG(fmt, t, abreg, x, ytreg, arg) \
+ do \
+ { \
+ char abregname[10], tregname[10]; \
+ \
+ unw_print_abreg (abregname, abreg); \
+ unw_print_xyreg (tregname, x, ytreg); \
+ printf ("\t%s:spill_reg(t=%lu,reg=%s,treg=%s)\n", \
+ fmt, (unsigned long) t, abregname, tregname); \
+ } \
+ while (0)
+
+#define UNW_DEC_SPILL_SPREL_P(fmt, qp, t, abreg, spoff, arg) \
+ do \
+ { \
+ char regname[20]; \
+ \
+ unw_print_abreg (regname, abreg); \
+ printf ("\t%s:spill_sprel_p(qp=p%u,t=%lu,reg=%s,spoff=0x%lx)\n", \
+ fmt, qp, (unsigned long) t, regname, 4 * (unsigned long)spoff); \
+ } \
+ while (0)
+
+#define UNW_DEC_SPILL_PSPREL_P(fmt, qp, t, abreg, pspoff, arg) \
+ do \
+ { \
+ char regname[20]; \
+ \
+ unw_print_abreg (regname, abreg); \
+ printf ("\t%s:spill_psprel_p(qp=p%u,t=%lu,reg=%s,pspoff=0x10-0x%lx)\n",\
+ fmt, qp, (unsigned long) t, regname, 4*(unsigned long)pspoff);\
+ } \
+ while (0)
+
+#define UNW_DEC_RESTORE_P(fmt, qp, t, abreg, arg) \
+ do \
+ { \
+ char regname[20]; \
+ \
+ unw_print_abreg (regname, abreg); \
+ printf ("\t%s:restore_p(qp=p%u,t=%lu,reg=%s)\n", \
+ fmt, qp, (unsigned long) t, regname); \
+ } \
+ while (0)
+
+#define UNW_DEC_SPILL_REG_P(fmt, qp, t, abreg, x, ytreg, arg) \
+ do \
+ { \
+ char regname[20], tregname[20]; \
+ \
+ unw_print_abreg (regname, abreg); \
+ unw_print_xyreg (tregname, x, ytreg); \
+ printf ("\t%s:spill_reg_p(qp=p%u,t=%lu,reg=%s,treg=%s)\n", \
+ fmt, qp, (unsigned long) t, regname, tregname); \
+ } \
+ while (0)
+
+#define UNW_DEC_LABEL_STATE(fmt, label, arg) \
+ printf ("\t%s:label_state(label=%lu)\n", fmt, (unsigned long) label)
+
+#define UNW_DEC_COPY_STATE(fmt, label, arg) \
+ printf ("\t%s:copy_state(label=%lu)\n", fmt, (unsigned long) label)
+
+#define UNW_DEC_EPILOGUE(fmt, t, ecount, arg) \
+ printf ("\t%s:epilogue(t=%lu,ecount=%lu)\n", \
+ fmt, (unsigned long) t, (unsigned long) ecount)
+
+/*
+ * Generic IA-64 unwind info decoder.
+ *
+ * This file is used both by the Linux kernel and objdump. Please
+ * keep the two copies of this file in sync (modulo differences in the
+ * prototypes...).
+ *
+ * You need to customize the decoder by defining the following
+ * macros/constants before including this file:
+ *
+ * Types:
+ * unw_word Unsigned integer type with at least 64 bits
+ *
+ * Register names:
+ * UNW_REG_BSP
+ * UNW_REG_BSPSTORE
+ * UNW_REG_FPSR
+ * UNW_REG_LC
+ * UNW_REG_PFS
+ * UNW_REG_PR
+ * UNW_REG_RNAT
+ * UNW_REG_PSP
+ * UNW_REG_RP
+ * UNW_REG_UNAT
+ *
+ * Decoder action macros:
+ * UNW_DEC_BAD_CODE(code)
+ * UNW_DEC_ABI(fmt,abi,context,arg)
+ * UNW_DEC_BR_GR(fmt,brmask,gr,arg)
+ * UNW_DEC_BR_MEM(fmt,brmask,arg)
+ * UNW_DEC_COPY_STATE(fmt,label,arg)
+ * UNW_DEC_EPILOGUE(fmt,t,ecount,arg)
+ * UNW_DEC_FRGR_MEM(fmt,grmask,frmask,arg)
+ * UNW_DEC_FR_MEM(fmt,frmask,arg)
+ * UNW_DEC_GR_GR(fmt,grmask,gr,arg)
+ * UNW_DEC_GR_MEM(fmt,grmask,arg)
+ * UNW_DEC_LABEL_STATE(fmt,label,arg)
+ * UNW_DEC_MEM_STACK_F(fmt,t,size,arg)
+ * UNW_DEC_MEM_STACK_V(fmt,t,arg)
+ * UNW_DEC_PRIUNAT_GR(fmt,r,arg)
+ * UNW_DEC_PRIUNAT_WHEN_GR(fmt,t,arg)
+ * UNW_DEC_PRIUNAT_WHEN_MEM(fmt,t,arg)
+ * UNW_DEC_PRIUNAT_WHEN_PSPREL(fmt,pspoff,arg)
+ * UNW_DEC_PRIUNAT_WHEN_SPREL(fmt,spoff,arg)
+ * UNW_DEC_PROLOGUE(fmt,body,rlen,arg)
+ * UNW_DEC_PROLOGUE_GR(fmt,rlen,mask,grsave,arg)
+ * UNW_DEC_REG_PSPREL(fmt,reg,pspoff,arg)
+ * UNW_DEC_REG_REG(fmt,src,dst,arg)
+ * UNW_DEC_REG_SPREL(fmt,reg,spoff,arg)
+ * UNW_DEC_REG_WHEN(fmt,reg,t,arg)
+ * UNW_DEC_RESTORE(fmt,t,abreg,arg)
+ * UNW_DEC_RESTORE_P(fmt,qp,t,abreg,arg)
+ * UNW_DEC_SPILL_BASE(fmt,pspoff,arg)
+ * UNW_DEC_SPILL_MASK(fmt,imaskp,arg)
+ * UNW_DEC_SPILL_PSPREL(fmt,t,abreg,pspoff,arg)
+ * UNW_DEC_SPILL_PSPREL_P(fmt,qp,t,abreg,pspoff,arg)
+ * UNW_DEC_SPILL_REG(fmt,t,abreg,x,ytreg,arg)
+ * UNW_DEC_SPILL_REG_P(fmt,qp,t,abreg,x,ytreg,arg)
+ * UNW_DEC_SPILL_SPREL(fmt,t,abreg,spoff,arg)
+ * UNW_DEC_SPILL_SPREL_P(fmt,qp,t,abreg,pspoff,arg)
+ */
+
+static unw_word unw_decode_uleb128 PARAMS ((const unsigned char **));
+static const unsigned char *unw_decode_x1 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_x2 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_x3 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_x4 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_r1 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_r2 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_r3 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_p1 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_p2_p5 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_p6 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_p7_p10 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_b1 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_b2 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+static const unsigned char *unw_decode_b3_x4 PARAMS ((const unsigned char *,
+ unsigned int, void *));
+
+static unw_word
+unw_decode_uleb128 (dpp)
+ const unsigned char **dpp;
+{
+ unsigned shift = 0;
+ unw_word byte, result = 0;
+ const unsigned char *bp = *dpp;
+
+ while (1)
+ {
+ byte = *bp++;
+ result |= (byte & 0x7f) << shift;
+
+ if ((byte & 0x80) == 0)
+ break;
+
+ shift += 7;
+ }
+
+ *dpp = bp;
+
+ return result;
+}
+
+static const unsigned char *
+unw_decode_x1 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code ATTRIBUTE_UNUSED;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ unsigned char byte1, abreg;
+ unw_word t, off;
+
+ byte1 = *dp++;
+ t = unw_decode_uleb128 (&dp);
+ off = unw_decode_uleb128 (&dp);
+ abreg = (byte1 & 0x7f);
+ if (byte1 & 0x80)
+ UNW_DEC_SPILL_SPREL ("X1", t, abreg, off, arg);
+ else
+ UNW_DEC_SPILL_PSPREL ("X1", t, abreg, off, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_x2 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code ATTRIBUTE_UNUSED;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ unsigned char byte1, byte2, abreg, x, ytreg;
+ unw_word t;
+
+ byte1 = *dp++;
+ byte2 = *dp++;
+ t = unw_decode_uleb128 (&dp);
+ abreg = (byte1 & 0x7f);
+ ytreg = byte2;
+ x = (byte1 >> 7) & 1;
+ if ((byte1 & 0x80) == 0 && ytreg == 0)
+ UNW_DEC_RESTORE ("X2", t, abreg, arg);
+ else
+ UNW_DEC_SPILL_REG ("X2", t, abreg, x, ytreg, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_x3 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code ATTRIBUTE_UNUSED;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ unsigned char byte1, byte2, abreg, qp;
+ unw_word t, off;
+
+ byte1 = *dp++;
+ byte2 = *dp++;
+ t = unw_decode_uleb128 (&dp);
+ off = unw_decode_uleb128 (&dp);
+
+ qp = (byte1 & 0x3f);
+ abreg = (byte2 & 0x7f);
+
+ if (byte1 & 0x80)
+ UNW_DEC_SPILL_SPREL_P ("X3", qp, t, abreg, off, arg);
+ else
+ UNW_DEC_SPILL_PSPREL_P ("X3", qp, t, abreg, off, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_x4 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code ATTRIBUTE_UNUSED;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ unsigned char byte1, byte2, byte3, qp, abreg, x, ytreg;
+ unw_word t;
+
+ byte1 = *dp++;
+ byte2 = *dp++;
+ byte3 = *dp++;
+ t = unw_decode_uleb128 (&dp);
+
+ qp = (byte1 & 0x3f);
+ abreg = (byte2 & 0x7f);
+ x = (byte2 >> 7) & 1;
+ ytreg = byte3;
+
+ if ((byte2 & 0x80) == 0 && byte3 == 0)
+ UNW_DEC_RESTORE_P ("X4", qp, t, abreg, arg);
+ else
+ UNW_DEC_SPILL_REG_P ("X4", qp, t, abreg, x, ytreg, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_r1 (dp, code, arg)
+ const unsigned char *dp;
+ unsigned int code;
+ void *arg;
+{
+ int body = (code & 0x20) != 0;
+ unw_word rlen;
+
+ rlen = (code & 0x1f);
+ UNW_DEC_PROLOGUE ("R1", body, rlen, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_r2 (dp, code, arg)
+ const unsigned char *dp;
+ unsigned int code;
+ void *arg;
+{
+ unsigned char byte1, mask, grsave;
+ unw_word rlen;
+
+ byte1 = *dp++;
+
+ mask = ((code & 0x7) << 1) | ((byte1 >> 7) & 1);
+ grsave = (byte1 & 0x7f);
+ rlen = unw_decode_uleb128 (& dp);
+ UNW_DEC_PROLOGUE_GR ("R2", rlen, mask, grsave, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_r3 (dp, code, arg)
+ const unsigned char *dp;
+ unsigned int code;
+ void *arg;
+{
+ unw_word rlen;
+
+ rlen = unw_decode_uleb128 (& dp);
+ UNW_DEC_PROLOGUE ("R3", ((code & 0x3) == 1), rlen, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_p1 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ unsigned char brmask = (code & 0x1f);
+
+ UNW_DEC_BR_MEM ("P1", brmask, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_p2_p5 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ if ((code & 0x10) == 0)
+ {
+ unsigned char byte1 = *dp++;
+
+ UNW_DEC_BR_GR ("P2", ((code & 0xf) << 1) | ((byte1 >> 7) & 1),
+ (byte1 & 0x7f), arg);
+ }
+ else if ((code & 0x08) == 0)
+ {
+ unsigned char byte1 = *dp++, r, dst;
+
+ r = ((code & 0x7) << 1) | ((byte1 >> 7) & 1);
+ dst = (byte1 & 0x7f);
+ switch (r)
+ {
+ case 0:
+ UNW_DEC_REG_GR ("P3", UNW_REG_PSP, dst, arg);
+ break;
+ case 1:
+ UNW_DEC_REG_GR ("P3", UNW_REG_RP, dst, arg);
+ break;
+ case 2:
+ UNW_DEC_REG_GR ("P3", UNW_REG_PFS, dst, arg);
+ break;
+ case 3:
+ UNW_DEC_REG_GR ("P3", UNW_REG_PR, dst, arg);
+ break;
+ case 4:
+ UNW_DEC_REG_GR ("P3", UNW_REG_UNAT, dst, arg);
+ break;
+ case 5:
+ UNW_DEC_REG_GR ("P3", UNW_REG_LC, dst, arg);
+ break;
+ case 6:
+ UNW_DEC_RP_BR ("P3", dst, arg);
+ break;
+ case 7:
+ UNW_DEC_REG_GR ("P3", UNW_REG_RNAT, dst, arg);
+ break;
+ case 8:
+ UNW_DEC_REG_GR ("P3", UNW_REG_BSP, dst, arg);
+ break;
+ case 9:
+ UNW_DEC_REG_GR ("P3", UNW_REG_BSPSTORE, dst, arg);
+ break;
+ case 10:
+ UNW_DEC_REG_GR ("P3", UNW_REG_FPSR, dst, arg);
+ break;
+ case 11:
+ UNW_DEC_PRIUNAT_GR ("P3", dst, arg);
+ break;
+ default:
+ UNW_DEC_BAD_CODE (r);
+ break;
+ }
+ }
+ else if ((code & 0x7) == 0)
+ UNW_DEC_SPILL_MASK ("P4", dp, arg);
+ else if ((code & 0x7) == 1)
+ {
+ unw_word grmask, frmask, byte1, byte2, byte3;
+
+ byte1 = *dp++;
+ byte2 = *dp++;
+ byte3 = *dp++;
+ grmask = ((byte1 >> 4) & 0xf);
+ frmask = ((byte1 & 0xf) << 16) | (byte2 << 8) | byte3;
+ UNW_DEC_FRGR_MEM ("P5", grmask, frmask, arg);
+ }
+ else
+ UNW_DEC_BAD_CODE (code);
+
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_p6 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ int gregs = (code & 0x10) != 0;
+ unsigned char mask = (code & 0x0f);
+
+ if (gregs)
+ UNW_DEC_GR_MEM ("P6", mask, arg);
+ else
+ UNW_DEC_FR_MEM ("P6", mask, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_p7_p10 (dp, code, arg)
+ const unsigned char *dp;
+ unsigned int code;
+ void *arg;
+{
+ unsigned char r, byte1, byte2;
+ unw_word t, size;
+
+ if ((code & 0x10) == 0)
+ {
+ r = (code & 0xf);
+ t = unw_decode_uleb128 (&dp);
+ switch (r)
+ {
+ case 0:
+ size = unw_decode_uleb128 (&dp);
+ UNW_DEC_MEM_STACK_F ("P7", t, size, arg);
+ break;
+
+ case 1:
+ UNW_DEC_MEM_STACK_V ("P7", t, arg);
+ break;
+ case 2:
+ UNW_DEC_SPILL_BASE ("P7", t, arg);
+ break;
+ case 3:
+ UNW_DEC_REG_SPREL ("P7", UNW_REG_PSP, t, arg);
+ break;
+ case 4:
+ UNW_DEC_REG_WHEN ("P7", UNW_REG_RP, t, arg);
+ break;
+ case 5:
+ UNW_DEC_REG_PSPREL ("P7", UNW_REG_RP, t, arg);
+ break;
+ case 6:
+ UNW_DEC_REG_WHEN ("P7", UNW_REG_PFS, t, arg);
+ break;
+ case 7:
+ UNW_DEC_REG_PSPREL ("P7", UNW_REG_PFS, t, arg);
+ break;
+ case 8:
+ UNW_DEC_REG_WHEN ("P7", UNW_REG_PR, t, arg);
+ break;
+ case 9:
+ UNW_DEC_REG_PSPREL ("P7", UNW_REG_PR, t, arg);
+ break;
+ case 10:
+ UNW_DEC_REG_WHEN ("P7", UNW_REG_LC, t, arg);
+ break;
+ case 11:
+ UNW_DEC_REG_PSPREL ("P7", UNW_REG_LC, t, arg);
+ break;
+ case 12:
+ UNW_DEC_REG_WHEN ("P7", UNW_REG_UNAT, t, arg);
+ break;
+ case 13:
+ UNW_DEC_REG_PSPREL ("P7", UNW_REG_UNAT, t, arg);
+ break;
+ case 14:
+ UNW_DEC_REG_WHEN ("P7", UNW_REG_FPSR, t, arg);
+ break;
+ case 15:
+ UNW_DEC_REG_PSPREL ("P7", UNW_REG_FPSR, t, arg);
+ break;
+ default:
+ UNW_DEC_BAD_CODE (r);
+ break;
+ }
+ }
+ else
+ {
+ switch (code & 0xf)
+ {
+ case 0x0: /* p8 */
+ {
+ r = *dp++;
+ t = unw_decode_uleb128 (&dp);
+ switch (r)
+ {
+ case 1:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_RP, t, arg);
+ break;
+ case 2:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_PFS, t, arg);
+ break;
+ case 3:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_PR, t, arg);
+ break;
+ case 4:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_LC, t, arg);
+ break;
+ case 5:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_UNAT, t, arg);
+ break;
+ case 6:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_FPSR, t, arg);
+ break;
+ case 7:
+ UNW_DEC_REG_WHEN ("P8", UNW_REG_BSP, t, arg);
+ break;
+ case 8:
+ UNW_DEC_REG_PSPREL ("P8", UNW_REG_BSP, t, arg);
+ break;
+ case 9:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_BSP, t, arg);
+ break;
+ case 10:
+ UNW_DEC_REG_WHEN ("P8", UNW_REG_BSPSTORE, t, arg);
+ break;
+ case 11:
+ UNW_DEC_REG_PSPREL ("P8", UNW_REG_BSPSTORE, t, arg);
+ break;
+ case 12:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_BSPSTORE, t, arg);
+ break;
+ case 13:
+ UNW_DEC_REG_WHEN ("P8", UNW_REG_RNAT, t, arg);
+ break;
+ case 14:
+ UNW_DEC_REG_PSPREL ("P8", UNW_REG_RNAT, t, arg);
+ break;
+ case 15:
+ UNW_DEC_REG_SPREL ("P8", UNW_REG_RNAT, t, arg);
+ break;
+ case 16:
+ UNW_DEC_PRIUNAT_WHEN_GR ("P8", t, arg);
+ break;
+ case 17:
+ UNW_DEC_PRIUNAT_PSPREL ("P8", t, arg);
+ break;
+ case 18:
+ UNW_DEC_PRIUNAT_SPREL ("P8", t, arg);
+ break;
+ case 19:
+ UNW_DEC_PRIUNAT_WHEN_MEM ("P8", t, arg);
+ break;
+ default:
+ UNW_DEC_BAD_CODE (r);
+ break;
+ }
+ }
+ break;
+
+ case 0x1:
+ byte1 = *dp++;
+ byte2 = *dp++;
+ UNW_DEC_GR_GR ("P9", (byte1 & 0xf), (byte2 & 0x7f), arg);
+ break;
+
+ case 0xf: /* p10 */
+ byte1 = *dp++;
+ byte2 = *dp++;
+ UNW_DEC_ABI ("P10", byte1, byte2, arg);
+ break;
+
+ case 0x9:
+ return unw_decode_x1 (dp, code, arg);
+
+ case 0xa:
+ return unw_decode_x2 (dp, code, arg);
+
+ case 0xb:
+ return unw_decode_x3 (dp, code, arg);
+
+ case 0xc:
+ return unw_decode_x4 (dp, code, arg);
+
+ default:
+ UNW_DEC_BAD_CODE (code);
+ break;
+ }
+ }
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_b1 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ unw_word label = (code & 0x1f);
+
+ if ((code & 0x20) != 0)
+ UNW_DEC_COPY_STATE ("B1", label, arg);
+ else
+ UNW_DEC_LABEL_STATE ("B1", label, arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_b2 (dp, code, arg)
+ const unsigned char * dp;
+ unsigned int code;
+ void * arg ATTRIBUTE_UNUSED;
+{
+ unw_word t;
+
+ t = unw_decode_uleb128 (& dp);
+ UNW_DEC_EPILOGUE ("B2", t, (code & 0x1f), arg);
+ return dp;
+}
+
+static const unsigned char *
+unw_decode_b3_x4 (dp, code, arg)
+ const unsigned char *dp;
+ unsigned int code;
+ void *arg;
+{
+ unw_word t, ecount, label;
+
+ if ((code & 0x10) == 0)
+ {
+ t = unw_decode_uleb128 (&dp);
+ ecount = unw_decode_uleb128 (&dp);
+ UNW_DEC_EPILOGUE ("B3", t, ecount, arg);
+ }
+ else if ((code & 0x07) == 0)
+ {
+ label = unw_decode_uleb128 (&dp);
+ if ((code & 0x08) != 0)
+ UNW_DEC_COPY_STATE ("B4", label, arg);
+ else
+ UNW_DEC_LABEL_STATE ("B4", label, arg);
+ }
+ else
+ switch (code & 0x7)
+ {
+ case 1:
+ return unw_decode_x1 (dp, code, arg);
+ case 2:
+ return unw_decode_x2 (dp, code, arg);
+ case 3:
+ return unw_decode_x3 (dp, code, arg);
+ case 4:
+ return unw_decode_x4 (dp, code, arg);
+ default:
+ UNW_DEC_BAD_CODE (code);
+ break;
+ }
+ return dp;
+}
+
+typedef const unsigned char *(*unw_decoder)
+ PARAMS ((const unsigned char *, unsigned int, void *));
+
+static unw_decoder unw_decode_table[2][8] =
+ {
+ /* prologue table: */
+ {
+ unw_decode_r1, /* 0 */
+ unw_decode_r1,
+ unw_decode_r2,
+ unw_decode_r3,
+ unw_decode_p1, /* 4 */
+ unw_decode_p2_p5,
+ unw_decode_p6,
+ unw_decode_p7_p10
+ },
+ {
+ unw_decode_r1, /* 0 */
+ unw_decode_r1,
+ unw_decode_r2,
+ unw_decode_r3,
+ unw_decode_b1, /* 4 */
+ unw_decode_b1,
+ unw_decode_b2,
+ unw_decode_b3_x4
+ }
+ };
+
+/* Decode one descriptor and return address of next descriptor. */
+const unsigned char *
+unw_decode (dp, inside_body, ptr_inside_body)
+ const unsigned char * dp;
+ int inside_body;
+ void * ptr_inside_body;
+{
+ unw_decoder decoder;
+ unsigned char code;
+
+ code = *dp++;
+ decoder = unw_decode_table[inside_body][code >> 5];
+ return (*decoder) (dp, code, ptr_inside_body);
+}
projects / repair.git / blobdiff