diff options
Diffstat (limited to 'gdb/rs6000-tdep.c')
| -rw-r--r-- | gdb/rs6000-tdep.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c index 7118581..c9ab3a8 100644 --- a/gdb/rs6000-tdep.c +++ b/gdb/rs6000-tdep.c @@ -31,6 +31,7 @@ #include "objfiles.h" #include "arch-utils.h" #include "regcache.h" +#include "regset.h" #include "doublest.h" #include "value.h" #include "parser-defs.h" @@ -150,6 +151,166 @@ ppc_floating_point_unit_p (struct gdbarch *gdbarch) return 1; return 0; } + + +/* Register set support functions. */ + +static void +ppc_supply_reg (struct regcache *regcache, int regnum, + const char *regs, size_t offset) +{ + if (regnum != -1 && offset != -1) + regcache_raw_supply (regcache, regnum, regs + offset); +} + +static void +ppc_collect_reg (const struct regcache *regcache, int regnum, + char *regs, size_t offset) +{ + if (regnum != -1 && offset != -1) + regcache_raw_collect (regcache, regnum, regs + offset); +} + +/* Supply register REGNUM in the general-purpose register set REGSET + from the buffer specified by GREGS and LEN to register cache + REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ + +void +ppc_supply_gregset (const struct regset *regset, struct regcache *regcache, + int regnum, const void *gregs, size_t len) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + const struct ppc_reg_offsets *offsets = regset->descr; + size_t offset; + int i; + + for (i = 0, offset = offsets->r0_offset; i < 32; i++, offset += 4) + { + if (regnum == -1 || regnum == i) + ppc_supply_reg (regcache, i, gregs, offset); + } + + if (regnum == -1 || regnum == PC_REGNUM) + ppc_supply_reg (regcache, PC_REGNUM, gregs, offsets->pc_offset); + if (regnum == -1 || regnum == tdep->ppc_ps_regnum) + ppc_supply_reg (regcache, tdep->ppc_ps_regnum, + gregs, offsets->ps_offset); + if (regnum == -1 || regnum == tdep->ppc_cr_regnum) + ppc_supply_reg (regcache, tdep->ppc_cr_regnum, + gregs, offsets->cr_offset); + if (regnum == -1 || regnum == tdep->ppc_lr_regnum) + ppc_supply_reg (regcache, tdep->ppc_lr_regnum, + gregs, offsets->lr_offset); + if (regnum == -1 || regnum == tdep->ppc_ctr_regnum) + ppc_supply_reg (regcache, tdep->ppc_ctr_regnum, + gregs, offsets->ctr_offset); + if (regnum == -1 || regnum == tdep->ppc_xer_regnum) + ppc_supply_reg (regcache, tdep->ppc_xer_regnum, + gregs, offsets->cr_offset); + if (regnum == -1 || regnum == tdep->ppc_mq_regnum) + ppc_supply_reg (regcache, tdep->ppc_mq_regnum, gregs, offsets->mq_offset); +} + +/* Supply register REGNUM in the floating-point register set REGSET + from the buffer specified by FPREGS and LEN to register cache + REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ + +void +ppc_supply_fpregset (const struct regset *regset, struct regcache *regcache, + int regnum, const void *fpregs, size_t len) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + const struct ppc_reg_offsets *offsets = regset->descr; + size_t offset; + int i; + + offset = offsets->f0_offset; + for (i = FP0_REGNUM; i < FP0_REGNUM + 32; i++, offset += 4) + { + if (regnum == -1 || regnum == i) + ppc_supply_reg (regcache, i, fpregs, offset); + } + + if (regnum == -1 || regnum == tdep->ppc_fpscr_regnum) + ppc_supply_reg (regcache, tdep->ppc_fpscr_regnum, + fpregs, offsets->fpscr_offset); +} + +/* Collect register REGNUM in the general-purpose register set + REGSET. from register cache REGCACHE into the buffer specified by + GREGS and LEN. If REGNUM is -1, do this for all registers in + REGSET. */ + +void +ppc_collect_gregset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *gregs, size_t len) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + const struct ppc_reg_offsets *offsets = regset->descr; + size_t offset; + int i; + + offset = offsets->r0_offset; + for (i = 0; i <= 32; i++, offset += 4) + { + if (regnum == -1 || regnum == i) + ppc_collect_reg (regcache, regnum, gregs, offset); + } + + if (regnum == -1 || regnum == PC_REGNUM) + ppc_collect_reg (regcache, PC_REGNUM, gregs, offsets->pc_offset); + if (regnum == -1 || regnum == tdep->ppc_ps_regnum) + ppc_collect_reg (regcache, tdep->ppc_ps_regnum, + gregs, offsets->ps_offset); + if (regnum == -1 || regnum == tdep->ppc_cr_regnum) + ppc_collect_reg (regcache, tdep->ppc_cr_regnum, + gregs, offsets->cr_offset); + if (regnum == -1 || regnum == tdep->ppc_lr_regnum) + ppc_collect_reg (regcache, tdep->ppc_lr_regnum, + gregs, offsets->lr_offset); + if (regnum == -1 || regnum == tdep->ppc_ctr_regnum) + ppc_collect_reg (regcache, tdep->ppc_ctr_regnum, + gregs, offsets->ctr_offset); + if (regnum == -1 || regnum == tdep->ppc_xer_regnum) + ppc_collect_reg (regcache, tdep->ppc_xer_regnum, + gregs, offsets->xer_offset); + if (regnum == -1 || regnum == tdep->ppc_mq_regnum) + ppc_collect_reg (regcache, tdep->ppc_mq_regnum, + gregs, offsets->mq_offset); +} + +/* Collect register REGNUM in the floating-point register set + REGSET. from register cache REGCACHE into the buffer specified by + FPREGS and LEN. If REGNUM is -1, do this for all registers in + REGSET. */ + +void +ppc_collect_fpregset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *fpregs, size_t len) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + const struct ppc_reg_offsets *offsets = regset->descr; + size_t offset; + int i; + + offset = offsets->f0_offset; + for (i = FP0_REGNUM; i <= FP0_REGNUM + 32; i++, offset += 4) + { + if (regnum == -1 || regnum == i) + ppc_collect_reg (regcache, regnum, fpregs, offset); + } + + if (regnum == -1 || regnum == tdep->ppc_fpscr_regnum) + ppc_collect_reg (regcache, tdep->ppc_fpscr_regnum, + fpregs, offsets->fpscr_offset); +} + /* Read a LEN-byte address from debugged memory address MEMADDR. */ |