+ frv_linux_sigtramp_frame_prev_register,
+ NULL,
+ frv_linux_sigtramp_frame_sniffer
+};
+\f
+/* The FRV kernel defines ELF_NGREG as 46. We add 2 in order to include
+ the loadmap addresses in the register set. (See below for more info.) */
+#define FRV_ELF_NGREG (46 + 2)
+typedef unsigned char frv_elf_greg_t[4];
+typedef struct { frv_elf_greg_t reg[FRV_ELF_NGREG]; } frv_elf_gregset_t;
+
+typedef unsigned char frv_elf_fpreg_t[4];
+typedef struct
+{
+ frv_elf_fpreg_t fr[64];
+ frv_elf_fpreg_t fner[2];
+ frv_elf_fpreg_t msr[2];
+ frv_elf_fpreg_t acc[8];
+ unsigned char accg[8];
+ frv_elf_fpreg_t fsr[1];
+} frv_elf_fpregset_t;
+
+/* Constants for accessing elements of frv_elf_gregset_t. */
+
+#define FRV_PT_PSR 0
+#define FRV_PT_ISR 1
+#define FRV_PT_CCR 2
+#define FRV_PT_CCCR 3
+#define FRV_PT_LR 4
+#define FRV_PT_LCR 5
+#define FRV_PT_PC 6
+#define FRV_PT_GNER0 10
+#define FRV_PT_GNER1 11
+#define FRV_PT_IACC0H 12
+#define FRV_PT_IACC0L 13
+
+/* Note: Only 32 of the GRs will be found in the corefile. */
+#define FRV_PT_GR(j) ( 14 + (j)) /* GRj for 0<=j<=63. */
+
+#define FRV_PT_TBR FRV_PT_GR(0) /* gr0 is always 0, so TBR is stuffed
+ there. */
+
+/* Technically, the loadmap addresses are not part of `pr_reg' as
+ found in the elf_prstatus struct. The fields which communicate the
+ loadmap address appear (by design) immediately after `pr_reg'
+ though, and the BFD function elf32_frv_grok_prstatus() has been
+ implemented to include these fields in the register section that it
+ extracts from the core file. So, for our purposes, they may be
+ viewed as registers. */
+
+#define FRV_PT_EXEC_FDPIC_LOADMAP 46
+#define FRV_PT_INTERP_FDPIC_LOADMAP 47
+
+
+/* Unpack an frv_elf_gregset_t into GDB's register cache. */
+
+static void
+frv_linux_supply_gregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *gregs, size_t len)
+{
+ int regi;
+ char zerobuf[MAX_REGISTER_SIZE];
+ const frv_elf_gregset_t *gregsetp = gregs;
+
+ memset (zerobuf, 0, MAX_REGISTER_SIZE);
+
+ /* gr0 always contains 0. Also, the kernel passes the TBR value in
+ this slot. */
+ regcache_raw_supply (regcache, first_gpr_regnum, zerobuf);
+
+ for (regi = first_gpr_regnum + 1; regi <= last_gpr_regnum; regi++)
+ {
+ if (regi >= first_gpr_regnum + 32)
+ regcache_raw_supply (regcache, regi, zerobuf);
+ else
+ regcache_raw_supply (regcache, regi,
+ gregsetp->reg[FRV_PT_GR (regi
+ - first_gpr_regnum)]);
+ }
+
+ regcache_raw_supply (regcache, pc_regnum, gregsetp->reg[FRV_PT_PC]);
+ regcache_raw_supply (regcache, psr_regnum, gregsetp->reg[FRV_PT_PSR]);
+ regcache_raw_supply (regcache, ccr_regnum, gregsetp->reg[FRV_PT_CCR]);
+ regcache_raw_supply (regcache, cccr_regnum, gregsetp->reg[FRV_PT_CCCR]);
+ regcache_raw_supply (regcache, lr_regnum, gregsetp->reg[FRV_PT_LR]);
+ regcache_raw_supply (regcache, lcr_regnum, gregsetp->reg[FRV_PT_LCR]);
+ regcache_raw_supply (regcache, gner0_regnum, gregsetp->reg[FRV_PT_GNER0]);
+ regcache_raw_supply (regcache, gner1_regnum, gregsetp->reg[FRV_PT_GNER1]);
+ regcache_raw_supply (regcache, tbr_regnum, gregsetp->reg[FRV_PT_TBR]);
+ regcache_raw_supply (regcache, fdpic_loadmap_exec_regnum,
+ gregsetp->reg[FRV_PT_EXEC_FDPIC_LOADMAP]);
+ regcache_raw_supply (regcache, fdpic_loadmap_interp_regnum,
+ gregsetp->reg[FRV_PT_INTERP_FDPIC_LOADMAP]);
+}
+
+/* Unpack an frv_elf_fpregset_t into GDB's register cache. */
+
+static void
+frv_linux_supply_fpregset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *gregs, size_t len)
+{
+ int regi;
+ const frv_elf_fpregset_t *fpregsetp = gregs;
+
+ for (regi = first_fpr_regnum; regi <= last_fpr_regnum; regi++)
+ regcache_raw_supply (regcache, regi,
+ fpregsetp->fr[regi - first_fpr_regnum]);
+
+ regcache_raw_supply (regcache, fner0_regnum, fpregsetp->fner[0]);
+ regcache_raw_supply (regcache, fner1_regnum, fpregsetp->fner[1]);
+
+ regcache_raw_supply (regcache, msr0_regnum, fpregsetp->msr[0]);
+ regcache_raw_supply (regcache, msr1_regnum, fpregsetp->msr[1]);
+
+ for (regi = acc0_regnum; regi <= acc7_regnum; regi++)
+ regcache_raw_supply (regcache, regi, fpregsetp->acc[regi - acc0_regnum]);
+
+ regcache_raw_supply (regcache, accg0123_regnum, fpregsetp->accg);
+ regcache_raw_supply (regcache, accg4567_regnum, fpregsetp->accg + 4);
+
+ regcache_raw_supply (regcache, fsr0_regnum, fpregsetp->fsr[0]);
+}
+
+/* FRV Linux kernel register sets. */
+
+static struct regset frv_linux_gregset =
+{
+ NULL,
+ frv_linux_supply_gregset
+};
+
+static struct regset frv_linux_fpregset =
+{
+ NULL,
+ frv_linux_supply_fpregset