#include "frame-unwind.h"
#include "tramp-frame.h"
-/* From <asm/ptrace.h>, values for PT_NIP, PT_R1, and PT_LNK */
-#define PPC_LINUX_PT_R0 0
-#define PPC_LINUX_PT_R1 1
-#define PPC_LINUX_PT_R2 2
-#define PPC_LINUX_PT_R3 3
-#define PPC_LINUX_PT_R4 4
-#define PPC_LINUX_PT_R5 5
-#define PPC_LINUX_PT_R6 6
-#define PPC_LINUX_PT_R7 7
-#define PPC_LINUX_PT_R8 8
-#define PPC_LINUX_PT_R9 9
-#define PPC_LINUX_PT_R10 10
-#define PPC_LINUX_PT_R11 11
-#define PPC_LINUX_PT_R12 12
-#define PPC_LINUX_PT_R13 13
-#define PPC_LINUX_PT_R14 14
-#define PPC_LINUX_PT_R15 15
-#define PPC_LINUX_PT_R16 16
-#define PPC_LINUX_PT_R17 17
-#define PPC_LINUX_PT_R18 18
-#define PPC_LINUX_PT_R19 19
-#define PPC_LINUX_PT_R20 20
-#define PPC_LINUX_PT_R21 21
-#define PPC_LINUX_PT_R22 22
-#define PPC_LINUX_PT_R23 23
-#define PPC_LINUX_PT_R24 24
-#define PPC_LINUX_PT_R25 25
-#define PPC_LINUX_PT_R26 26
-#define PPC_LINUX_PT_R27 27
-#define PPC_LINUX_PT_R28 28
-#define PPC_LINUX_PT_R29 29
-#define PPC_LINUX_PT_R30 30
-#define PPC_LINUX_PT_R31 31
-#define PPC_LINUX_PT_NIP 32
-#define PPC_LINUX_PT_MSR 33
-#define PPC_LINUX_PT_CTR 35
-#define PPC_LINUX_PT_LNK 36
-#define PPC_LINUX_PT_XER 37
-#define PPC_LINUX_PT_CCR 38
-#define PPC_LINUX_PT_MQ 39
-#define PPC_LINUX_PT_FPR0 48 /* each FP reg occupies 2 slots in this space */
-#define PPC_LINUX_PT_FPR31 (PPC_LINUX_PT_FPR0 + 2*31)
-#define PPC_LINUX_PT_FPSCR (PPC_LINUX_PT_FPR0 + 2*32 + 1)
-
-
static CORE_ADDR
ppc_linux_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
{
return addr;
}
+/* This wrapper clears areas in the linux gregset not written by
+ ppc_collect_gregset. */
+
static void
-right_supply_register (struct regcache *regcache, int wordsize, int regnum,
- const bfd_byte *buf)
+ppc_linux_collect_gregset (const struct regset *regset,
+ const struct regcache *regcache,
+ int regnum, void *gregs, size_t len)
{
- regcache_raw_supply (regcache, regnum,
- (buf + wordsize - register_size (current_gdbarch, regnum)));
+ if (regnum == -1)
+ memset (gregs, 0, len);
+ ppc_collect_gregset (regset, regcache, regnum, gregs, len);
}
-/* Extract the register values found in the WORDSIZED ABI GREGSET,
- storing their values in REGCACHE. Note that some are left-aligned,
- while others are right aligned. */
-
-void
-ppc_linux_supply_gregset (struct regcache *regcache,
- int regnum, const void *gregs, size_t size,
- int wordsize)
-{
- int regi;
- struct gdbarch *regcache_arch = get_regcache_arch (regcache);
- struct gdbarch_tdep *regcache_tdep = gdbarch_tdep (regcache_arch);
- const bfd_byte *buf = gregs;
-
- for (regi = 0; regi < ppc_num_gprs; regi++)
- right_supply_register (regcache, wordsize,
- regcache_tdep->ppc_gp0_regnum + regi,
- buf + wordsize * regi);
-
- right_supply_register (regcache, wordsize, gdbarch_pc_regnum (regcache_arch),
- buf + wordsize * PPC_LINUX_PT_NIP);
- right_supply_register (regcache, wordsize, regcache_tdep->ppc_lr_regnum,
- buf + wordsize * PPC_LINUX_PT_LNK);
- regcache_raw_supply (regcache, regcache_tdep->ppc_cr_regnum,
- buf + wordsize * PPC_LINUX_PT_CCR);
- regcache_raw_supply (regcache, regcache_tdep->ppc_xer_regnum,
- buf + wordsize * PPC_LINUX_PT_XER);
- regcache_raw_supply (regcache, regcache_tdep->ppc_ctr_regnum,
- buf + wordsize * PPC_LINUX_PT_CTR);
- if (regcache_tdep->ppc_mq_regnum != -1)
- right_supply_register (regcache, wordsize, regcache_tdep->ppc_mq_regnum,
- buf + wordsize * PPC_LINUX_PT_MQ);
- right_supply_register (regcache, wordsize, regcache_tdep->ppc_ps_regnum,
- buf + wordsize * PPC_LINUX_PT_MSR);
-}
+/* Regset descriptions. */
+static const struct ppc_reg_offsets ppc32_linux_reg_offsets =
+ {
+ /* General-purpose registers. */
+ /* .r0_offset = */ 0,
+ /* .gpr_size = */ 4,
+ /* .xr_size = */ 4,
+ /* .pc_offset = */ 128,
+ /* .ps_offset = */ 132,
+ /* .cr_offset = */ 152,
+ /* .lr_offset = */ 144,
+ /* .ctr_offset = */ 140,
+ /* .xer_offset = */ 148,
+ /* .mq_offset = */ 156,
+
+ /* Floating-point registers. */
+ /* .f0_offset = */ 0,
+ /* .fpscr_offset = */ 256,
+ /* .fpscr_size = */ 8,
+
+ /* AltiVec registers. */
+ /* .vr0_offset = */ 0,
+ /* .vrsave_offset = */ 512,
+ /* .vscr_offset = */ 512 + 12
+ };
-static void
-ppc32_linux_supply_gregset (const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *gregs, size_t size)
-{
- ppc_linux_supply_gregset (regcache, regnum, gregs, size, 4);
-}
+static const struct ppc_reg_offsets ppc64_linux_reg_offsets =
+ {
+ /* General-purpose registers. */
+ /* .r0_offset = */ 0,
+ /* .gpr_size = */ 8,
+ /* .xr_size = */ 8,
+ /* .pc_offset = */ 256,
+ /* .ps_offset = */ 264,
+ /* .cr_offset = */ 304,
+ /* .lr_offset = */ 288,
+ /* .ctr_offset = */ 280,
+ /* .xer_offset = */ 296,
+ /* .mq_offset = */ 312,
+
+ /* Floating-point registers. */
+ /* .f0_offset = */ 0,
+ /* .fpscr_offset = */ 256,
+ /* .fpscr_size = */ 8,
+
+ /* AltiVec registers. */
+ /* .vr0_offset = */ 0,
+ /* .vrsave_offset = */ 528,
+ /* .vscr_offset = */ 512 + 12
+ };
-static struct regset ppc32_linux_gregset = {
- NULL, ppc32_linux_supply_gregset
+static const struct regset ppc32_linux_gregset = {
+ &ppc32_linux_reg_offsets,
+ ppc_supply_gregset,
+ ppc_linux_collect_gregset,
+ NULL
};
-static void
-ppc64_linux_supply_gregset (const struct regset *regset,
- struct regcache * regcache,
- int regnum, const void *gregs, size_t size)
-{
- ppc_linux_supply_gregset (regcache, regnum, gregs, size, 8);
-}
+static const struct regset ppc64_linux_gregset = {
+ &ppc64_linux_reg_offsets,
+ ppc_supply_gregset,
+ ppc_linux_collect_gregset,
+ NULL
+};
-static struct regset ppc64_linux_gregset = {
- NULL, ppc64_linux_supply_gregset
+static const struct regset ppc32_linux_fpregset = {
+ &ppc32_linux_reg_offsets,
+ ppc_supply_fpregset,
+ ppc_collect_fpregset,
+ NULL
};
-void
-ppc_linux_supply_fpregset (const struct regset *regset,
- struct regcache * regcache,
- int regnum, const void *fpset, size_t size)
+const struct regset *
+ppc_linux_gregset (int wordsize)
{
- int regi;
- struct gdbarch *regcache_arch = get_regcache_arch (regcache);
- struct gdbarch_tdep *regcache_tdep = gdbarch_tdep (regcache_arch);
- const bfd_byte *buf = fpset;
-
- if (! ppc_floating_point_unit_p (regcache_arch))
- return;
-
- for (regi = 0; regi < ppc_num_fprs; regi++)
- regcache_raw_supply (regcache,
- regcache_tdep->ppc_fp0_regnum + regi,
- buf + 8 * regi);
-
- /* The FPSCR is stored in the low order word of the last
- doubleword in the fpregset. */
- regcache_raw_supply (regcache, regcache_tdep->ppc_fpscr_regnum,
- buf + 8 * 32 + 4);
+ return wordsize == 8 ? &ppc64_linux_gregset : &ppc32_linux_gregset;
}
-static struct regset ppc_linux_fpregset = { NULL, ppc_linux_supply_fpregset };
+const struct regset *
+ppc_linux_fpregset (void)
+{
+ return &ppc32_linux_fpregset;
+}
static const struct regset *
ppc_linux_regset_from_core_section (struct gdbarch *core_arch,
return &ppc64_linux_gregset;
}
if (strcmp (sect_name, ".reg2") == 0)
- return &ppc_linux_fpregset;
+ return &ppc32_linux_fpregset;
return NULL;
}
projects / deliverable / binutils-gdb.git / blobdiff