diff options
Diffstat (limited to 'gdb/ppc-linux-tdep.c')
| -rw-r--r-- | gdb/ppc-linux-tdep.c | 82 |
1 files changed, 64 insertions, 18 deletions
diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c index 344069d..7362c4b 100644 --- a/gdb/ppc-linux-tdep.c +++ b/gdb/ppc-linux-tdep.c @@ -444,6 +444,24 @@ ppc_linux_collect_gregset (const struct regset *regset, } } +static void +ppc_linux_collect_vrregset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *buf, size_t len) +{ + gdb_byte *vrregs = (gdb_byte *) buf; + + /* Zero-pad the unused bytes in the fields for vscr and vrsave + in case they get displayed somewhere (e.g. in core files). */ + if (regnum == PPC_VSCR_REGNUM || regnum == -1) + memset (&vrregs[32 * 16], 0, 16); + + if (regnum == PPC_VRSAVE_REGNUM || regnum == -1) + memset (&vrregs[33 * 16], 0, 16); + + regcache_collect_regset (regset, regcache, regnum, buf, len); +} + /* Regset descriptions. */ static const struct ppc_reg_offsets ppc32_linux_reg_offsets = { @@ -462,12 +480,7 @@ static const struct ppc_reg_offsets ppc32_linux_reg_offsets = /* Floating-point registers. */ /* .f0_offset = */ 0, /* .fpscr_offset = */ 256, - /* .fpscr_size = */ 8, - - /* AltiVec registers. */ - /* .vr0_offset = */ 0, - /* .vscr_offset = */ 512 + 12, - /* .vrsave_offset = */ 528 + /* .fpscr_size = */ 8 }; static const struct ppc_reg_offsets ppc64_linux_reg_offsets = @@ -487,12 +500,7 @@ static const struct ppc_reg_offsets ppc64_linux_reg_offsets = /* Floating-point registers. */ /* .f0_offset = */ 0, /* .fpscr_offset = */ 256, - /* .fpscr_size = */ 8, - - /* AltiVec registers. */ - /* .vr0_offset = */ 0, - /* .vscr_offset = */ 512 + 12, - /* .vrsave_offset = */ 528 + /* .fpscr_size = */ 8 }; static const struct regset ppc32_linux_gregset = { @@ -513,10 +521,36 @@ static const struct regset ppc32_linux_fpregset = { ppc_collect_fpregset }; -static const struct regset ppc32_linux_vrregset = { - &ppc32_linux_reg_offsets, - ppc_supply_vrregset, - ppc_collect_vrregset +static const struct regcache_map_entry ppc32_le_linux_vrregmap[] = + { + { 32, PPC_VR0_REGNUM, 16 }, + { 1, PPC_VSCR_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 12 }, + { 1, PPC_VRSAVE_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 12 }, + { 0 } + }; + +static const struct regcache_map_entry ppc32_be_linux_vrregmap[] = + { + { 32, PPC_VR0_REGNUM, 16 }, + { 1, REGCACHE_MAP_SKIP, 12}, + { 1, PPC_VSCR_REGNUM, 4 }, + { 1, PPC_VRSAVE_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 12 }, + { 0 } + }; + +static const struct regset ppc32_le_linux_vrregset = { + ppc32_le_linux_vrregmap, + regcache_supply_regset, + ppc_linux_collect_vrregset +}; + +static const struct regset ppc32_be_linux_vrregset = { + ppc32_be_linux_vrregmap, + regcache_supply_regset, + ppc_linux_collect_vrregset }; static const struct regset ppc32_linux_vsxregset = { @@ -537,6 +571,15 @@ ppc_linux_fpregset (void) return &ppc32_linux_fpregset; } +const struct regset * +ppc_linux_vrregset (struct gdbarch *gdbarch) +{ + if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) + return &ppc32_be_linux_vrregset; + else + return &ppc32_le_linux_vrregset; +} + /* Iterate over supported core file register note sections. */ static void @@ -557,8 +600,11 @@ ppc_linux_iterate_over_regset_sections (struct gdbarch *gdbarch, cb (".reg2", 264, &ppc32_linux_fpregset, NULL, cb_data); if (have_altivec) - cb (".reg-ppc-vmx", PPC_LINUX_SIZEOF_VRREGSET, &ppc32_linux_vrregset, - "ppc Altivec", cb_data); + { + const struct regset *vrregset = ppc_linux_vrregset (gdbarch); + cb (".reg-ppc-vmx", PPC_LINUX_SIZEOF_VRREGSET, vrregset, + "ppc Altivec", cb_data); + } if (have_vsx) cb (".reg-ppc-vsx", PPC_LINUX_SIZEOF_VSXREGSET, |