X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fppc-linux-tdep.c;h=901b938f257abcd1155d3c48acb144141116116a;hb=f5a7c406b1975cde626efed526960f2cf1bdaceb;hp=dee6938cf544c901eab53bc161d788916fd48b29;hpb=3b7344d5ab495cd82b6c72ec5e00d018549837fb;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c index dee6938cf5..901b938f25 100644 --- a/gdb/ppc-linux-tdep.c +++ b/gdb/ppc-linux-tdep.c @@ -1,6 +1,6 @@ /* Target-dependent code for GDB, the GNU debugger. - Copyright (C) 1986-2014 Free Software Foundation, Inc. + Copyright (C) 1986-2020 Free Software Foundation, Inc. This file is part of GDB. @@ -31,25 +31,27 @@ #include "osabi.h" #include "regset.h" #include "solib-svr4.h" -#include "solib-spu.h" #include "solib.h" #include "solist.h" #include "ppc-tdep.h" #include "ppc64-tdep.h" #include "ppc-linux-tdep.h" +#include "arch/ppc-linux-common.h" +#include "arch/ppc-linux-tdesc.h" #include "glibc-tdep.h" #include "trad-frame.h" #include "frame-unwind.h" #include "tramp-frame.h" -#include "observer.h" +#include "observable.h" #include "auxv.h" #include "elf/common.h" #include "elf/ppc64.h" -#include "exceptions.h" #include "arch-utils.h" -#include "spu-tdep.h" #include "xml-syscall.h" #include "linux-tdep.h" +#include "linux-record.h" +#include "record-full.h" +#include "infrun.h" #include "stap-probe.h" #include "ax.h" @@ -58,22 +60,26 @@ #include "parser-defs.h" #include "user-regs.h" #include -#include "elf-bfd.h" /* for elfcore_write_* */ +#include "elf-bfd.h" #include "features/rs6000/powerpc-32l.c" #include "features/rs6000/powerpc-altivec32l.c" -#include "features/rs6000/powerpc-cell32l.c" #include "features/rs6000/powerpc-vsx32l.c" #include "features/rs6000/powerpc-isa205-32l.c" #include "features/rs6000/powerpc-isa205-altivec32l.c" #include "features/rs6000/powerpc-isa205-vsx32l.c" +#include "features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.c" +#include "features/rs6000/powerpc-isa207-vsx32l.c" +#include "features/rs6000/powerpc-isa207-htm-vsx32l.c" #include "features/rs6000/powerpc-64l.c" #include "features/rs6000/powerpc-altivec64l.c" -#include "features/rs6000/powerpc-cell64l.c" #include "features/rs6000/powerpc-vsx64l.c" #include "features/rs6000/powerpc-isa205-64l.c" #include "features/rs6000/powerpc-isa205-altivec64l.c" #include "features/rs6000/powerpc-isa205-vsx64l.c" +#include "features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.c" +#include "features/rs6000/powerpc-isa207-vsx64l.c" +#include "features/rs6000/powerpc-isa207-htm-vsx64l.c" #include "features/rs6000/powerpc-e500l.c" /* Shared library operations for PowerPC-Linux. */ @@ -144,7 +150,7 @@ static struct target_so_ops powerpc_so_ops; Examine the PLT again. Note that the loading of the shared library has initialized the PLT to code which loads a constant (which I think is an index into the GOT) into r11 and then - branchs a short distance to the code which actually does the + branches a short distance to the code which actually does the resolving. (gdb) x/2i 0x100409d4 @@ -211,20 +217,18 @@ static int ppc_linux_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt) { - CORE_ADDR addr = bp_tgt->placed_address; + CORE_ADDR addr = bp_tgt->reqstd_address; const unsigned char *bp; int val; int bplen; gdb_byte old_contents[BREAKPOINT_MAX]; - struct cleanup *cleanup; /* Determine appropriate breakpoint contents and size for this address. */ bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen); - if (bp == NULL) - error (_("Software breakpoints not implemented for this target.")); /* Make sure we see the memory breakpoints. */ - cleanup = make_show_memory_breakpoints_cleanup (1); + scoped_restore restore_memory + = make_scoped_restore_show_memory_breakpoints (1); val = target_read_memory (addr, old_contents, bplen); /* If our breakpoint is no longer at the address, this means that the @@ -233,7 +237,6 @@ ppc_linux_memory_remove_breakpoint (struct gdbarch *gdbarch, if (val == 0 && memcmp (bp, old_contents, bplen) == 0) val = target_write_raw_memory (addr, bp_tgt->shadow_contents, bplen); - do_cleanups (cleanup); return val; } @@ -257,56 +260,8 @@ ppc_linux_return_value (struct gdbarch *gdbarch, struct value *function, readbuf, writebuf); } -static struct core_regset_section ppc_linux_vsx_regset_sections[] = -{ - { ".reg", 48 * 4, "general-purpose" }, - { ".reg2", 264, "floating-point" }, - { ".reg-ppc-vmx", 544, "ppc Altivec" }, - { ".reg-ppc-vsx", 256, "POWER7 VSX" }, - { NULL, 0} -}; - -static struct core_regset_section ppc_linux_vmx_regset_sections[] = -{ - { ".reg", 48 * 4, "general-purpose" }, - { ".reg2", 264, "floating-point" }, - { ".reg-ppc-vmx", 544, "ppc Altivec" }, - { NULL, 0} -}; - -static struct core_regset_section ppc_linux_fp_regset_sections[] = -{ - { ".reg", 48 * 4, "general-purpose" }, - { ".reg2", 264, "floating-point" }, - { NULL, 0} -}; - -static struct core_regset_section ppc64_linux_vsx_regset_sections[] = -{ - { ".reg", 48 * 8, "general-purpose" }, - { ".reg2", 264, "floating-point" }, - { ".reg-ppc-vmx", 544, "ppc Altivec" }, - { ".reg-ppc-vsx", 256, "POWER7 VSX" }, - { NULL, 0} -}; - -static struct core_regset_section ppc64_linux_vmx_regset_sections[] = -{ - { ".reg", 48 * 8, "general-purpose" }, - { ".reg2", 264, "floating-point" }, - { ".reg-ppc-vmx", 544, "ppc Altivec" }, - { NULL, 0} -}; - -static struct core_regset_section ppc64_linux_fp_regset_sections[] = -{ - { ".reg", 48 * 8, "general-purpose" }, - { ".reg2", 264, "floating-point" }, - { NULL, 0} -}; - -/* PLT stub in executable. */ -static struct ppc_insn_pattern powerpc32_plt_stub[] = +/* PLT stub in an executable. */ +static const struct ppc_insn_pattern powerpc32_plt_stub[] = { { 0xffff0000, 0x3d600000, 0 }, /* lis r11, xxxx */ { 0xffff0000, 0x816b0000, 0 }, /* lwz r11, xxxx(r11) */ @@ -315,16 +270,30 @@ static struct ppc_insn_pattern powerpc32_plt_stub[] = { 0, 0, 0 } }; -/* PLT stub in shared library. */ -static struct ppc_insn_pattern powerpc32_plt_stub_so[] = +/* PLT stubs in a shared library or PIE. + The first variant is used when the PLT entry is within +/-32k of + the GOT pointer (r30). */ +static const struct ppc_insn_pattern powerpc32_plt_stub_so_1[] = { { 0xffff0000, 0x817e0000, 0 }, /* lwz r11, xxxx(r30) */ { 0xffffffff, 0x7d6903a6, 0 }, /* mtctr r11 */ { 0xffffffff, 0x4e800420, 0 }, /* bctr */ - { 0xffffffff, 0x60000000, 0 }, /* nop */ { 0, 0, 0 } }; -#define POWERPC32_PLT_STUB_LEN ARRAY_SIZE (powerpc32_plt_stub) + +/* The second variant is used when the PLT entry is more than +/-32k + from the GOT pointer (r30). */ +static const struct ppc_insn_pattern powerpc32_plt_stub_so_2[] = + { + { 0xffff0000, 0x3d7e0000, 0 }, /* addis r11, r30, xxxx */ + { 0xffff0000, 0x816b0000, 0 }, /* lwz r11, xxxx(r11) */ + { 0xffffffff, 0x7d6903a6, 0 }, /* mtctr r11 */ + { 0xffffffff, 0x4e800420, 0 }, /* bctr */ + { 0, 0, 0 } + }; + +/* The max number of insns we check using ppc_insns_match_pattern. */ +#define POWERPC32_PLT_CHECK_LEN (ARRAY_SIZE (powerpc32_plt_stub) - 1) /* Check if PC is in PLT stub. For non-secure PLT, stub is in .plt section. For secure PLT, stub is in .text and we need to check @@ -343,49 +312,79 @@ powerpc_linux_in_dynsym_resolve_code (CORE_ADDR pc) /* Check if we are in the resolver. */ sym = lookup_minimal_symbol_by_pc (pc); if (sym.minsym != NULL - && (strcmp (MSYMBOL_LINKAGE_NAME (sym.minsym), "__glink") == 0 - || strcmp (MSYMBOL_LINKAGE_NAME (sym.minsym), - "__glink_PLTresolve") == 0)) + && (strcmp (sym.minsym->linkage_name (), "__glink") == 0 + || strcmp (sym.minsym->linkage_name (), "__glink_PLTresolve") == 0)) return 1; return 0; } -/* Follow PLT stub to actual routine. */ +/* Follow PLT stub to actual routine. + + When the execution direction is EXEC_REVERSE, scan backward to + check whether we are in the middle of a PLT stub. Currently, + we only look-behind at most 4 instructions (the max length of a PLT + stub sequence. */ static CORE_ADDR ppc_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc) { - unsigned int insnbuf[POWERPC32_PLT_STUB_LEN]; + unsigned int insnbuf[POWERPC32_PLT_CHECK_LEN]; struct gdbarch *gdbarch = get_frame_arch (frame); struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); CORE_ADDR target = 0; + int scan_limit, i; - if (ppc_insns_match_pattern (frame, pc, powerpc32_plt_stub, insnbuf)) - { - /* Insn pattern is - lis r11, xxxx - lwz r11, xxxx(r11) - Branch target is in r11. */ + scan_limit = 1; + /* When reverse-debugging, scan backward to check whether we are + in the middle of trampoline code. */ + if (execution_direction == EXEC_REVERSE) + scan_limit = 4; /* At most 4 instructions. */ - target = (ppc_insn_d_field (insnbuf[0]) << 16) - | ppc_insn_d_field (insnbuf[1]); - target = read_memory_unsigned_integer (target, 4, byte_order); - } - - if (ppc_insns_match_pattern (frame, pc, powerpc32_plt_stub_so, insnbuf)) + for (i = 0; i < scan_limit; i++) { - /* Insn pattern is - lwz r11, xxxx(r30) - Branch target is in r11. */ + if (ppc_insns_match_pattern (frame, pc, powerpc32_plt_stub, insnbuf)) + { + /* Calculate PLT entry address from + lis r11, xxxx + lwz r11, xxxx(r11). */ + target = ((ppc_insn_d_field (insnbuf[0]) << 16) + + ppc_insn_d_field (insnbuf[1])); + } + else if (i < ARRAY_SIZE (powerpc32_plt_stub_so_1) - 1 + && ppc_insns_match_pattern (frame, pc, powerpc32_plt_stub_so_1, + insnbuf)) + { + /* Calculate PLT entry address from + lwz r11, xxxx(r30). */ + target = (ppc_insn_d_field (insnbuf[0]) + + get_frame_register_unsigned (frame, + tdep->ppc_gp0_regnum + 30)); + } + else if (ppc_insns_match_pattern (frame, pc, powerpc32_plt_stub_so_2, + insnbuf)) + { + /* Calculate PLT entry address from + addis r11, r30, xxxx + lwz r11, xxxx(r11). */ + target = ((ppc_insn_d_field (insnbuf[0]) << 16) + + ppc_insn_d_field (insnbuf[1]) + + get_frame_register_unsigned (frame, + tdep->ppc_gp0_regnum + 30)); + } + else + { + /* Scan backward one more instruction if it doesn't match. */ + pc -= 4; + continue; + } - target = get_frame_register_unsigned (frame, tdep->ppc_gp0_regnum + 30) - + ppc_insn_d_field (insnbuf[0]); target = read_memory_unsigned_integer (target, 4, byte_order); + return target; } - return target; + return 0; } /* Wrappers to handle Linux-only registers. */ @@ -395,21 +394,22 @@ ppc_linux_supply_gregset (const struct regset *regset, struct regcache *regcache, int regnum, const void *gregs, size_t len) { - const struct ppc_reg_offsets *offsets = regset->descr; + const struct ppc_reg_offsets *offsets + = (const struct ppc_reg_offsets *) regset->regmap; ppc_supply_gregset (regset, regcache, regnum, gregs, len); - if (ppc_linux_trap_reg_p (get_regcache_arch (regcache))) + if (ppc_linux_trap_reg_p (regcache->arch ())) { /* "orig_r3" is stored 2 slots after "pc". */ if (regnum == -1 || regnum == PPC_ORIG_R3_REGNUM) - ppc_supply_reg (regcache, PPC_ORIG_R3_REGNUM, gregs, + ppc_supply_reg (regcache, PPC_ORIG_R3_REGNUM, (const gdb_byte *) gregs, offsets->pc_offset + 2 * offsets->gpr_size, offsets->gpr_size); /* "trap" is stored 8 slots after "pc". */ if (regnum == -1 || regnum == PPC_TRAP_REGNUM) - ppc_supply_reg (regcache, PPC_TRAP_REGNUM, gregs, + ppc_supply_reg (regcache, PPC_TRAP_REGNUM, (const gdb_byte *) gregs, offsets->pc_offset + 8 * offsets->gpr_size, offsets->gpr_size); } @@ -420,7 +420,8 @@ ppc_linux_collect_gregset (const struct regset *regset, const struct regcache *regcache, int regnum, void *gregs, size_t len) { - const struct ppc_reg_offsets *offsets = regset->descr; + const struct ppc_reg_offsets *offsets + = (const struct ppc_reg_offsets *) regset->regmap; /* Clear areas in the linux gregset not written elsewhere. */ if (regnum == -1) @@ -428,17 +429,17 @@ ppc_linux_collect_gregset (const struct regset *regset, ppc_collect_gregset (regset, regcache, regnum, gregs, len); - if (ppc_linux_trap_reg_p (get_regcache_arch (regcache))) + if (ppc_linux_trap_reg_p (regcache->arch ())) { /* "orig_r3" is stored 2 slots after "pc". */ if (regnum == -1 || regnum == PPC_ORIG_R3_REGNUM) - ppc_collect_reg (regcache, PPC_ORIG_R3_REGNUM, gregs, + ppc_collect_reg (regcache, PPC_ORIG_R3_REGNUM, (gdb_byte *) gregs, offsets->pc_offset + 2 * offsets->gpr_size, offsets->gpr_size); /* "trap" is stored 8 slots after "pc". */ if (regnum == -1 || regnum == PPC_TRAP_REGNUM) - ppc_collect_reg (regcache, PPC_TRAP_REGNUM, gregs, + ppc_collect_reg (regcache, PPC_TRAP_REGNUM, (gdb_byte *) gregs, offsets->pc_offset + 8 * offsets->gpr_size, offsets->gpr_size); } @@ -462,12 +463,7 @@ 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 = @@ -487,47 +483,388 @@ 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 = { &ppc32_linux_reg_offsets, ppc_linux_supply_gregset, - ppc_linux_collect_gregset, - NULL + ppc_linux_collect_gregset }; static const struct regset ppc64_linux_gregset = { &ppc64_linux_reg_offsets, ppc_linux_supply_gregset, - ppc_linux_collect_gregset, - NULL + ppc_linux_collect_gregset }; static const struct regset ppc32_linux_fpregset = { &ppc32_linux_reg_offsets, ppc_supply_fpregset, - ppc_collect_fpregset, - NULL + ppc_collect_fpregset }; -static const struct regset ppc32_linux_vrregset = { - &ppc32_linux_reg_offsets, - ppc_supply_vrregset, - ppc_collect_vrregset, - NULL +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, + regcache_collect_regset }; +static const struct regset ppc32_be_linux_vrregset = { + ppc32_be_linux_vrregmap, + regcache_supply_regset, + regcache_collect_regset +}; + +static const struct regcache_map_entry ppc32_linux_vsxregmap[] = + { + { 32, PPC_VSR0_UPPER_REGNUM, 8 }, + { 0 } + }; + static const struct regset ppc32_linux_vsxregset = { - &ppc32_linux_reg_offsets, - ppc_supply_vsxregset, - ppc_collect_vsxregset, - NULL + ppc32_linux_vsxregmap, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Program Priorty Register regmap. */ + +static const struct regcache_map_entry ppc32_regmap_ppr[] = + { + { 1, PPC_PPR_REGNUM, 8 }, + { 0 } + }; + +/* Program Priorty Register regset. */ + +const struct regset ppc32_linux_pprregset = { + ppc32_regmap_ppr, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Data Stream Control Register regmap. */ + +static const struct regcache_map_entry ppc32_regmap_dscr[] = + { + { 1, PPC_DSCR_REGNUM, 8 }, + { 0 } + }; + +/* Data Stream Control Register regset. */ + +const struct regset ppc32_linux_dscrregset = { + ppc32_regmap_dscr, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Target Address Register regmap. */ + +static const struct regcache_map_entry ppc32_regmap_tar[] = + { + { 1, PPC_TAR_REGNUM, 8 }, + { 0 } + }; + +/* Target Address Register regset. */ + +const struct regset ppc32_linux_tarregset = { + ppc32_regmap_tar, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Event-Based Branching regmap. */ + +static const struct regcache_map_entry ppc32_regmap_ebb[] = + { + { 1, PPC_EBBRR_REGNUM, 8 }, + { 1, PPC_EBBHR_REGNUM, 8 }, + { 1, PPC_BESCR_REGNUM, 8 }, + { 0 } + }; + +/* Event-Based Branching regset. */ + +const struct regset ppc32_linux_ebbregset = { + ppc32_regmap_ebb, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Performance Monitoring Unit regmap. */ + +static const struct regcache_map_entry ppc32_regmap_pmu[] = + { + { 1, PPC_SIAR_REGNUM, 8 }, + { 1, PPC_SDAR_REGNUM, 8 }, + { 1, PPC_SIER_REGNUM, 8 }, + { 1, PPC_MMCR2_REGNUM, 8 }, + { 1, PPC_MMCR0_REGNUM, 8 }, + { 0 } + }; + +/* Performance Monitoring Unit regset. */ + +const struct regset ppc32_linux_pmuregset = { + ppc32_regmap_pmu, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Hardware Transactional Memory special-purpose register regmap. */ + +static const struct regcache_map_entry ppc32_regmap_tm_spr[] = + { + { 1, PPC_TFHAR_REGNUM, 8 }, + { 1, PPC_TEXASR_REGNUM, 8 }, + { 1, PPC_TFIAR_REGNUM, 8 }, + { 0 } + }; + +/* Hardware Transactional Memory special-purpose register regset. */ + +const struct regset ppc32_linux_tm_sprregset = { + ppc32_regmap_tm_spr, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Regmaps for the Hardware Transactional Memory checkpointed + general-purpose regsets for 32-bit, 64-bit big-endian, and 64-bit + little endian targets. The ptrace and core file buffers for 64-bit + targets use 8-byte fields for the 4-byte registers, and the + position of the register in the fields depends on the endianness. + The 32-bit regmap is the same for both endian types because the + fields are all 4-byte long. + + The layout of checkpointed GPR regset is the same as a regular + struct pt_regs, but we skip all registers that are not actually + checkpointed by the processor (e.g. msr, nip), except when + generating a core file. The 64-bit regset is 48 * 8 bytes long. + In some 64-bit kernels, the regset for a 32-bit inferior has the + same length, but all the registers are squeezed in the first half + (48 * 4 bytes). The pt_regs struct calls the regular cr ccr, but + we use ccr for "checkpointed condition register". Note that CR + (condition register) field 0 is not checkpointed, but the kernel + returns all 4 bytes. The skipped registers should not be touched + when writing the regset to the inferior (with + PTRACE_SETREGSET). */ + +static const struct regcache_map_entry ppc32_regmap_cgpr[] = + { + { 32, PPC_CR0_REGNUM, 4 }, + { 3, REGCACHE_MAP_SKIP, 4 }, /* nip, msr, orig_gpr3. */ + { 1, PPC_CCTR_REGNUM, 4 }, + { 1, PPC_CLR_REGNUM, 4 }, + { 1, PPC_CXER_REGNUM, 4 }, + { 1, PPC_CCR_REGNUM, 4 }, + { 9, REGCACHE_MAP_SKIP, 4 }, /* All the rest. */ + { 0 } + }; + +static const struct regcache_map_entry ppc64_le_regmap_cgpr[] = + { + { 32, PPC_CR0_REGNUM, 8 }, + { 3, REGCACHE_MAP_SKIP, 8 }, + { 1, PPC_CCTR_REGNUM, 8 }, + { 1, PPC_CLR_REGNUM, 8 }, + { 1, PPC_CXER_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 4 }, /* CXER padding. */ + { 1, PPC_CCR_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 4}, /* CCR padding. */ + { 9, REGCACHE_MAP_SKIP, 8}, + { 0 } + }; + +static const struct regcache_map_entry ppc64_be_regmap_cgpr[] = + { + { 32, PPC_CR0_REGNUM, 8 }, + { 3, REGCACHE_MAP_SKIP, 8 }, + { 1, PPC_CCTR_REGNUM, 8 }, + { 1, PPC_CLR_REGNUM, 8 }, + { 1, REGCACHE_MAP_SKIP, 4}, /* CXER padding. */ + { 1, PPC_CXER_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 4}, /* CCR padding. */ + { 1, PPC_CCR_REGNUM, 4 }, + { 9, REGCACHE_MAP_SKIP, 8}, + { 0 } + }; + +/* Regsets for the Hardware Transactional Memory checkpointed + general-purpose registers for 32-bit, 64-bit big-endian, and 64-bit + little endian targets. + + Some 64-bit kernels generate a checkpointed gpr note section with + 48*8 bytes for a 32-bit thread, of which only 48*4 are actually + used, so we set the variable size flag in the corresponding regset + to accept this case. */ + +static const struct regset ppc32_linux_cgprregset = { + ppc32_regmap_cgpr, + regcache_supply_regset, + regcache_collect_regset, + REGSET_VARIABLE_SIZE +}; + +static const struct regset ppc64_be_linux_cgprregset = { + ppc64_be_regmap_cgpr, + regcache_supply_regset, + regcache_collect_regset +}; + +static const struct regset ppc64_le_linux_cgprregset = { + ppc64_le_regmap_cgpr, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Hardware Transactional Memory checkpointed floating-point regmap. */ + +static const struct regcache_map_entry ppc32_regmap_cfpr[] = + { + { 32, PPC_CF0_REGNUM, 8 }, + { 1, PPC_CFPSCR_REGNUM, 8 }, + { 0 } + }; + +/* Hardware Transactional Memory checkpointed floating-point regset. */ + +const struct regset ppc32_linux_cfprregset = { + ppc32_regmap_cfpr, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Regmaps for the Hardware Transactional Memory checkpointed vector + regsets, for big and little endian targets. The position of the + 4-byte VSCR in its 16-byte field depends on the endianness. */ + +static const struct regcache_map_entry ppc32_le_regmap_cvmx[] = + { + { 32, PPC_CVR0_REGNUM, 16 }, + { 1, PPC_CVSCR_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 12 }, + { 1, PPC_CVRSAVE_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 12 }, + { 0 } + }; + +static const struct regcache_map_entry ppc32_be_regmap_cvmx[] = + { + { 32, PPC_CVR0_REGNUM, 16 }, + { 1, REGCACHE_MAP_SKIP, 12 }, + { 1, PPC_CVSCR_REGNUM, 4 }, + { 1, PPC_CVRSAVE_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 12}, + { 0 } + }; + +/* Hardware Transactional Memory checkpointed vector regsets, for little + and big endian targets. */ + +static const struct regset ppc32_le_linux_cvmxregset = { + ppc32_le_regmap_cvmx, + regcache_supply_regset, + regcache_collect_regset +}; + +static const struct regset ppc32_be_linux_cvmxregset = { + ppc32_be_regmap_cvmx, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Hardware Transactional Memory checkpointed vector-scalar regmap. */ + +static const struct regcache_map_entry ppc32_regmap_cvsx[] = + { + { 32, PPC_CVSR0_UPPER_REGNUM, 8 }, + { 0 } + }; + +/* Hardware Transactional Memory checkpointed vector-scalar regset. */ + +const struct regset ppc32_linux_cvsxregset = { + ppc32_regmap_cvsx, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Hardware Transactional Memory checkpointed Program Priority Register + regmap. */ + +static const struct regcache_map_entry ppc32_regmap_cppr[] = + { + { 1, PPC_CPPR_REGNUM, 8 }, + { 0 } + }; + +/* Hardware Transactional Memory checkpointed Program Priority Register + regset. */ + +const struct regset ppc32_linux_cpprregset = { + ppc32_regmap_cppr, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Hardware Transactional Memory checkpointed Data Stream Control + Register regmap. */ + +static const struct regcache_map_entry ppc32_regmap_cdscr[] = + { + { 1, PPC_CDSCR_REGNUM, 8 }, + { 0 } + }; + +/* Hardware Transactional Memory checkpointed Data Stream Control + Register regset. */ + +const struct regset ppc32_linux_cdscrregset = { + ppc32_regmap_cdscr, + regcache_supply_regset, + regcache_collect_regset +}; + +/* Hardware Transactional Memory checkpointed Target Address Register + regmap. */ + +static const struct regcache_map_entry ppc32_regmap_ctar[] = + { + { 1, PPC_CTAR_REGNUM, 8 }, + { 0 } + }; + +/* Hardware Transactional Memory checkpointed Target Address Register + regset. */ + +const struct regset ppc32_linux_ctarregset = { + ppc32_regmap_ctar, + regcache_supply_regset, + regcache_collect_regset }; const struct regset * @@ -542,25 +879,282 @@ ppc_linux_fpregset (void) return &ppc32_linux_fpregset; } -static const struct regset * -ppc_linux_regset_from_core_section (struct gdbarch *core_arch, - const char *sect_name, size_t sect_size) +const struct regset * +ppc_linux_vrregset (struct gdbarch *gdbarch) { - struct gdbarch_tdep *tdep = gdbarch_tdep (core_arch); - if (strcmp (sect_name, ".reg") == 0) + if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) + return &ppc32_be_linux_vrregset; + else + return &ppc32_le_linux_vrregset; +} + +const struct regset * +ppc_linux_vsxregset (void) +{ + return &ppc32_linux_vsxregset; +} + +const struct regset * +ppc_linux_cgprregset (struct gdbarch *gdbarch) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + if (tdep->wordsize == 4) + { + return &ppc32_linux_cgprregset; + } + else { - if (tdep->wordsize == 4) - return &ppc32_linux_gregset; + if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) + return &ppc64_be_linux_cgprregset; else - return &ppc64_linux_gregset; + return &ppc64_le_linux_cgprregset; + } +} + +const struct regset * +ppc_linux_cvmxregset (struct gdbarch *gdbarch) +{ + if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) + return &ppc32_be_linux_cvmxregset; + else + return &ppc32_le_linux_cvmxregset; +} + +/* Collect function used to generate the core note for the + checkpointed GPR regset. Here, we don't want to skip the + "checkpointed" NIP and MSR, so that the note section we generate is + similar to the one generated by the kernel. To avoid having to + define additional registers in GDB which are not actually + checkpointed in the architecture, we copy TFHAR to the checkpointed + NIP slot, which is what the kernel does, and copy the regular MSR + to the checkpointed MSR slot, which will have a similar value in + most cases. */ + +static void +ppc_linux_collect_core_cpgrregset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *buf, size_t len) +{ + struct gdbarch *gdbarch = regcache->arch (); + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + const struct regset *cgprregset = ppc_linux_cgprregset (gdbarch); + + /* We collect the checkpointed GPRs already defined in the regular + regmap, then overlay TFHAR/MSR on the checkpointed NIP/MSR + slots. */ + cgprregset->collect_regset (cgprregset, regcache, regnum, buf, len); + + /* Check that we are collecting all the registers, which should be + the case when generating a core file. */ + if (regnum != -1) + return; + + /* PT_NIP and PT_MSR are 32 and 33 for powerpc. Don't redefine + these symbols since this file can run on clients in other + architectures where they can already be defined to other + values. */ + int pt_offset = 32; + + /* Check that our buffer is long enough to hold two slots at + pt_offset * wordsize, one for NIP and one for MSR. */ + gdb_assert ((pt_offset + 2) * tdep->wordsize <= len); + + /* TFHAR is 8 bytes wide, but the NIP slot for a 32-bit thread is + 4-bytes long. We use raw_collect_integer which handles + differences in the sizes for the source and destination buffers + for both endian modes. */ + (regcache->raw_collect_integer + (PPC_TFHAR_REGNUM, ((gdb_byte *) buf) + pt_offset * tdep->wordsize, + tdep->wordsize, false)); + + pt_offset = 33; + + (regcache->raw_collect_integer + (PPC_MSR_REGNUM, ((gdb_byte *) buf) + pt_offset * tdep->wordsize, + tdep->wordsize, false)); +} + +/* Iterate over supported core file register note sections. */ + +static void +ppc_linux_iterate_over_regset_sections (struct gdbarch *gdbarch, + iterate_over_regset_sections_cb *cb, + void *cb_data, + const struct regcache *regcache) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + int have_altivec = tdep->ppc_vr0_regnum != -1; + int have_vsx = tdep->ppc_vsr0_upper_regnum != -1; + int have_ppr = tdep->ppc_ppr_regnum != -1; + int have_dscr = tdep->ppc_dscr_regnum != -1; + int have_tar = tdep->ppc_tar_regnum != -1; + + if (tdep->wordsize == 4) + cb (".reg", 48 * 4, 48 * 4, &ppc32_linux_gregset, NULL, cb_data); + else + cb (".reg", 48 * 8, 48 * 8, &ppc64_linux_gregset, NULL, cb_data); + + cb (".reg2", 264, 264, &ppc32_linux_fpregset, NULL, cb_data); + + if (have_altivec) + { + const struct regset *vrregset = ppc_linux_vrregset (gdbarch); + cb (".reg-ppc-vmx", PPC_LINUX_SIZEOF_VRREGSET, PPC_LINUX_SIZEOF_VRREGSET, + vrregset, "ppc Altivec", cb_data); + } + + if (have_vsx) + cb (".reg-ppc-vsx", PPC_LINUX_SIZEOF_VSXREGSET, PPC_LINUX_SIZEOF_VSXREGSET, + &ppc32_linux_vsxregset, "POWER7 VSX", cb_data); + + if (have_ppr) + cb (".reg-ppc-ppr", PPC_LINUX_SIZEOF_PPRREGSET, + PPC_LINUX_SIZEOF_PPRREGSET, + &ppc32_linux_pprregset, "Priority Program Register", cb_data); + + if (have_dscr) + cb (".reg-ppc-dscr", PPC_LINUX_SIZEOF_DSCRREGSET, + PPC_LINUX_SIZEOF_DSCRREGSET, + &ppc32_linux_dscrregset, "Data Stream Control Register", + cb_data); + + if (have_tar) + cb (".reg-ppc-tar", PPC_LINUX_SIZEOF_TARREGSET, + PPC_LINUX_SIZEOF_TARREGSET, + &ppc32_linux_tarregset, "Target Address Register", cb_data); + + /* EBB registers are unavailable when ptrace returns ENODATA. Check + availability when generating a core file (regcache != NULL). */ + if (tdep->have_ebb) + if (regcache == NULL + || REG_VALID == regcache->get_register_status (PPC_BESCR_REGNUM)) + cb (".reg-ppc-ebb", PPC_LINUX_SIZEOF_EBBREGSET, + PPC_LINUX_SIZEOF_EBBREGSET, + &ppc32_linux_ebbregset, "Event-based Branching Registers", + cb_data); + + if (tdep->ppc_mmcr0_regnum != -1) + cb (".reg-ppc-pmu", PPC_LINUX_SIZEOF_PMUREGSET, + PPC_LINUX_SIZEOF_PMUREGSET, + &ppc32_linux_pmuregset, "Performance Monitor Registers", + cb_data); + + if (tdep->have_htm_spr) + cb (".reg-ppc-tm-spr", PPC_LINUX_SIZEOF_TM_SPRREGSET, + PPC_LINUX_SIZEOF_TM_SPRREGSET, + &ppc32_linux_tm_sprregset, + "Hardware Transactional Memory Special Purpose Registers", + cb_data); + + /* Checkpointed registers can be unavailable, don't call back if + we are generating a core file. */ + + if (tdep->have_htm_core) + { + /* Only generate the checkpointed GPR core note if we also have + access to the HTM SPRs, because we need TFHAR to fill the + "checkpointed" NIP slot. We can read a core file without it + since GDB is not aware of this NIP as a visible register. */ + if (regcache == NULL || + (REG_VALID == regcache->get_register_status (PPC_CR0_REGNUM) + && tdep->have_htm_spr)) + { + int cgpr_size = (tdep->wordsize == 4? + PPC32_LINUX_SIZEOF_CGPRREGSET + : PPC64_LINUX_SIZEOF_CGPRREGSET); + + const struct regset *cgprregset = + ppc_linux_cgprregset (gdbarch); + + if (regcache != NULL) + { + struct regset core_cgprregset = *cgprregset; + + core_cgprregset.collect_regset + = ppc_linux_collect_core_cpgrregset; + + cb (".reg-ppc-tm-cgpr", + cgpr_size, cgpr_size, + &core_cgprregset, + "Checkpointed General Purpose Registers", cb_data); + } + else + { + cb (".reg-ppc-tm-cgpr", + cgpr_size, cgpr_size, + cgprregset, + "Checkpointed General Purpose Registers", cb_data); + } + } + } + + if (tdep->have_htm_fpu) + { + if (regcache == NULL || + REG_VALID == regcache->get_register_status (PPC_CF0_REGNUM)) + cb (".reg-ppc-tm-cfpr", PPC_LINUX_SIZEOF_CFPRREGSET, + PPC_LINUX_SIZEOF_CFPRREGSET, + &ppc32_linux_cfprregset, + "Checkpointed Floating Point Registers", cb_data); + } + + if (tdep->have_htm_altivec) + { + if (regcache == NULL || + REG_VALID == regcache->get_register_status (PPC_CVR0_REGNUM)) + { + const struct regset *cvmxregset = + ppc_linux_cvmxregset (gdbarch); + + cb (".reg-ppc-tm-cvmx", PPC_LINUX_SIZEOF_CVMXREGSET, + PPC_LINUX_SIZEOF_CVMXREGSET, + cvmxregset, + "Checkpointed Altivec (VMX) Registers", cb_data); + } + } + + if (tdep->have_htm_vsx) + { + if (regcache == NULL || + (REG_VALID + == regcache->get_register_status (PPC_CVSR0_UPPER_REGNUM))) + cb (".reg-ppc-tm-cvsx", PPC_LINUX_SIZEOF_CVSXREGSET, + PPC_LINUX_SIZEOF_CVSXREGSET, + &ppc32_linux_cvsxregset, + "Checkpointed VSX Registers", cb_data); + } + + if (tdep->ppc_cppr_regnum != -1) + { + if (regcache == NULL || + REG_VALID == regcache->get_register_status (PPC_CPPR_REGNUM)) + cb (".reg-ppc-tm-cppr", PPC_LINUX_SIZEOF_CPPRREGSET, + PPC_LINUX_SIZEOF_CPPRREGSET, + &ppc32_linux_cpprregset, + "Checkpointed Priority Program Register", cb_data); + } + + if (tdep->ppc_cdscr_regnum != -1) + { + if (regcache == NULL || + REG_VALID == regcache->get_register_status (PPC_CDSCR_REGNUM)) + cb (".reg-ppc-tm-cdscr", PPC_LINUX_SIZEOF_CDSCRREGSET, + PPC_LINUX_SIZEOF_CDSCRREGSET, + &ppc32_linux_cdscrregset, + "Checkpointed Data Stream Control Register", cb_data); + } + + if (tdep->ppc_ctar_regnum) + { + if ( regcache == NULL || + REG_VALID == regcache->get_register_status (PPC_CTAR_REGNUM)) + cb (".reg-ppc-tm-ctar", PPC_LINUX_SIZEOF_CTARREGSET, + PPC_LINUX_SIZEOF_CTARREGSET, + &ppc32_linux_ctarregset, + "Checkpointed Target Address Register", cb_data); } - if (strcmp (sect_name, ".reg2") == 0) - return &ppc32_linux_fpregset; - if (strcmp (sect_name, ".reg-ppc-vmx") == 0) - return &ppc32_linux_vrregset; - if (strcmp (sect_name, ".reg-ppc-vsx") == 0) - return &ppc32_linux_vsxregset; - return NULL; } static void @@ -686,8 +1280,8 @@ static struct tramp_frame ppc32_linux_sigaction_tramp_frame = { SIGTRAMP_FRAME, 4, { - { 0x380000ac, -1 }, /* li r0, 172 */ - { 0x44000002, -1 }, /* sc */ + { 0x380000ac, ULONGEST_MAX }, /* li r0, 172 */ + { 0x44000002, ULONGEST_MAX }, /* sc */ { TRAMP_SENTINEL_INSN }, }, ppc32_linux_sigaction_cache_init @@ -696,9 +1290,9 @@ static struct tramp_frame ppc64_linux_sigaction_tramp_frame = { SIGTRAMP_FRAME, 4, { - { 0x38210080, -1 }, /* addi r1,r1,128 */ - { 0x380000ac, -1 }, /* li r0, 172 */ - { 0x44000002, -1 }, /* sc */ + { 0x38210080, ULONGEST_MAX }, /* addi r1,r1,128 */ + { 0x380000ac, ULONGEST_MAX }, /* li r0, 172 */ + { 0x44000002, ULONGEST_MAX }, /* sc */ { TRAMP_SENTINEL_INSN }, }, ppc64_linux_sigaction_cache_init @@ -707,8 +1301,8 @@ static struct tramp_frame ppc32_linux_sighandler_tramp_frame = { SIGTRAMP_FRAME, 4, { - { 0x38000077, -1 }, /* li r0,119 */ - { 0x44000002, -1 }, /* sc */ + { 0x38000077, ULONGEST_MAX }, /* li r0,119 */ + { 0x44000002, ULONGEST_MAX }, /* sc */ { TRAMP_SENTINEL_INSN }, }, ppc32_linux_sighandler_cache_init @@ -717,55 +1311,14 @@ static struct tramp_frame ppc64_linux_sighandler_tramp_frame = { SIGTRAMP_FRAME, 4, { - { 0x38210080, -1 }, /* addi r1,r1,128 */ - { 0x38000077, -1 }, /* li r0,119 */ - { 0x44000002, -1 }, /* sc */ + { 0x38210080, ULONGEST_MAX }, /* addi r1,r1,128 */ + { 0x38000077, ULONGEST_MAX }, /* li r0,119 */ + { 0x44000002, ULONGEST_MAX }, /* sc */ { TRAMP_SENTINEL_INSN }, }, ppc64_linux_sighandler_cache_init }; - -/* Address to use for displaced stepping. When debugging a stand-alone - SPU executable, entry_point_address () will point to an SPU local-store - address and is thus not usable as displaced stepping location. We use - the auxiliary vector to determine the PowerPC-side entry point address - instead. */ - -static CORE_ADDR ppc_linux_entry_point_addr = 0; - -static void -ppc_linux_inferior_created (struct target_ops *target, int from_tty) -{ - ppc_linux_entry_point_addr = 0; -} - -static CORE_ADDR -ppc_linux_displaced_step_location (struct gdbarch *gdbarch) -{ - if (ppc_linux_entry_point_addr == 0) - { - CORE_ADDR addr; - - /* Determine entry point from target auxiliary vector. */ - if (target_auxv_search (¤t_target, AT_ENTRY, &addr) <= 0) - error (_("Cannot find AT_ENTRY auxiliary vector entry.")); - - /* Make certain that the address points at real code, and not a - function descriptor. */ - addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, - ¤t_target); - - /* Inferior calls also use the entry point as a breakpoint location. - We don't want displaced stepping to interfere with those - breakpoints, so leave space. */ - ppc_linux_entry_point_addr = addr + 2 * PPC_INSN_SIZE; - } - - return ppc_linux_entry_point_addr; -} - - /* Return 1 if PPC_ORIG_R3_REGNUM and PPC_TRAP_REGNUM are usable. */ int ppc_linux_trap_reg_p (struct gdbarch *gdbarch) @@ -784,39 +1337,204 @@ ppc_linux_trap_reg_p (struct gdbarch *gdbarch) r0 register. When the function fails, it returns -1. */ static LONGEST ppc_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); - struct cleanup *cleanbuf; - /* The content of a register */ - gdb_byte *buf; - /* The result */ - LONGEST ret; /* Make sure we're in a 32- or 64-bit machine */ gdb_assert (tdep->wordsize == 4 || tdep->wordsize == 8); - buf = (gdb_byte *) xmalloc (tdep->wordsize * sizeof (gdb_byte)); - - cleanbuf = make_cleanup (xfree, buf); + /* The content of a register */ + gdb::byte_vector buf (tdep->wordsize); /* Getting the system call number from the register. When dealing with PowerPC architecture, this information is stored at 0th register. */ - regcache_cooked_read (regcache, tdep->ppc_gp0_regnum, buf); + regcache->cooked_read (tdep->ppc_gp0_regnum, buf.data ()); + + return extract_signed_integer (buf.data (), tdep->wordsize, byte_order); +} + +/* PPC process record-replay */ - ret = extract_signed_integer (buf, tdep->wordsize, byte_order); - do_cleanups (cleanbuf); +static struct linux_record_tdep ppc_linux_record_tdep; +static struct linux_record_tdep ppc64_linux_record_tdep; - return ret; +/* ppc_canonicalize_syscall maps from the native PowerPC Linux set of + syscall ids into a canonical set of syscall ids used by process + record. (See arch/powerpc/include/uapi/asm/unistd.h in kernel tree.) + Return -1 if this system call is not supported by process record. + Otherwise, return the syscall number for process record of given + SYSCALL. */ + +static enum gdb_syscall +ppc_canonicalize_syscall (int syscall) +{ + int result = -1; + + if (syscall <= 165) + result = syscall; + else if (syscall >= 167 && syscall <= 190) /* Skip query_module 166 */ + result = syscall + 1; + else if (syscall >= 192 && syscall <= 197) /* mmap2 */ + result = syscall; + else if (syscall == 208) /* tkill */ + result = gdb_sys_tkill; + else if (syscall >= 207 && syscall <= 220) /* gettid */ + result = syscall + 224 - 207; + else if (syscall >= 234 && syscall <= 239) /* exit_group */ + result = syscall + 252 - 234; + else if (syscall >= 240 && syscall <= 248) /* timer_create */ + result = syscall += 259 - 240; + else if (syscall >= 250 && syscall <= 251) /* tgkill */ + result = syscall + 270 - 250; + else if (syscall == 336) + result = gdb_sys_recv; + else if (syscall == 337) + result = gdb_sys_recvfrom; + else if (syscall == 342) + result = gdb_sys_recvmsg; + + return (enum gdb_syscall) result; +} + +/* Record registers which might be clobbered during system call. + Return 0 if successful. */ + +static int +ppc_linux_syscall_record (struct regcache *regcache) +{ + struct gdbarch *gdbarch = regcache->arch (); + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + ULONGEST scnum; + enum gdb_syscall syscall_gdb; + int ret; + + regcache_raw_read_unsigned (regcache, tdep->ppc_gp0_regnum, &scnum); + syscall_gdb = ppc_canonicalize_syscall (scnum); + + if (syscall_gdb < 0) + { + printf_unfiltered (_("Process record and replay target doesn't " + "support syscall number %d\n"), (int) scnum); + return 0; + } + + if (syscall_gdb == gdb_sys_sigreturn + || syscall_gdb == gdb_sys_rt_sigreturn) + { + int i, j; + int regsets[] = { tdep->ppc_gp0_regnum, + tdep->ppc_fp0_regnum, + tdep->ppc_vr0_regnum, + tdep->ppc_vsr0_upper_regnum }; + + for (j = 0; j < 4; j++) + { + if (regsets[j] == -1) + continue; + for (i = 0; i < 32; i++) + { + if (record_full_arch_list_add_reg (regcache, regsets[j] + i)) + return -1; + } + } + + if (record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum)) + return -1; + if (record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum)) + return -1; + if (record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum)) + return -1; + if (record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum)) + return -1; + + return 0; + } + + if (tdep->wordsize == 8) + ret = record_linux_system_call (syscall_gdb, regcache, + &ppc64_linux_record_tdep); + else + ret = record_linux_system_call (syscall_gdb, regcache, + &ppc_linux_record_tdep); + + if (ret != 0) + return ret; + + /* Record registers clobbered during syscall. */ + for (int i = 3; i <= 12; i++) + { + if (record_full_arch_list_add_reg (regcache, tdep->ppc_gp0_regnum + i)) + return -1; + } + if (record_full_arch_list_add_reg (regcache, tdep->ppc_gp0_regnum + 0)) + return -1; + if (record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum)) + return -1; + if (record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum)) + return -1; + if (record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum)) + return -1; + + return 0; +} + +/* Record registers which might be clobbered during signal handling. + Return 0 if successful. */ + +static int +ppc_linux_record_signal (struct gdbarch *gdbarch, struct regcache *regcache, + enum gdb_signal signal) +{ + /* See handle_rt_signal64 in arch/powerpc/kernel/signal_64.c + handle_rt_signal32 in arch/powerpc/kernel/signal_32.c + arch/powerpc/include/asm/ptrace.h + for details. */ + const int SIGNAL_FRAMESIZE = 128; + const int sizeof_rt_sigframe = 1440 * 2 + 8 * 2 + 4 * 6 + 8 + 8 + 128 + 512; + ULONGEST sp; + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + int i; + + for (i = 3; i <= 12; i++) + { + if (record_full_arch_list_add_reg (regcache, tdep->ppc_gp0_regnum + i)) + return -1; + } + + if (record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum)) + return -1; + if (record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum)) + return -1; + if (record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum)) + return -1; + if (record_full_arch_list_add_reg (regcache, gdbarch_pc_regnum (gdbarch))) + return -1; + if (record_full_arch_list_add_reg (regcache, gdbarch_sp_regnum (gdbarch))) + return -1; + + /* Record the change in the stack. + frame-size = sizeof (struct rt_sigframe) + SIGNAL_FRAMESIZE */ + regcache_raw_read_unsigned (regcache, gdbarch_sp_regnum (gdbarch), &sp); + sp -= SIGNAL_FRAMESIZE; + sp -= sizeof_rt_sigframe; + + if (record_full_arch_list_add_mem (sp, SIGNAL_FRAMESIZE + sizeof_rt_sigframe)) + return -1; + + if (record_full_arch_list_add_end ()) + return -1; + + return 0; } static void ppc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) { - struct gdbarch *gdbarch = get_regcache_arch (regcache); + struct gdbarch *gdbarch = regcache->arch (); regcache_cooked_write_unsigned (regcache, gdbarch_pc_regnum (gdbarch), pc); @@ -832,49 +1550,63 @@ ppc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) regcache_cooked_write_unsigned (regcache, PPC_TRAP_REGNUM, -1); } -static int -ppc_linux_spu_section (bfd *abfd, asection *asect, void *user_data) -{ - return strncmp (bfd_section_name (abfd, asect), "SPU/", 4) == 0; -} - static const struct target_desc * ppc_linux_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd) { - asection *cell = bfd_sections_find_if (abfd, ppc_linux_spu_section, NULL); + struct ppc_linux_features features = ppc_linux_no_features; asection *altivec = bfd_get_section_by_name (abfd, ".reg-ppc-vmx"); asection *vsx = bfd_get_section_by_name (abfd, ".reg-ppc-vsx"); asection *section = bfd_get_section_by_name (abfd, ".reg"); + asection *ppr = bfd_get_section_by_name (abfd, ".reg-ppc-ppr"); + asection *dscr = bfd_get_section_by_name (abfd, ".reg-ppc-dscr"); + asection *tar = bfd_get_section_by_name (abfd, ".reg-ppc-tar"); + asection *pmu = bfd_get_section_by_name (abfd, ".reg-ppc-pmu"); + asection *htmspr = bfd_get_section_by_name (abfd, ".reg-ppc-tm-spr"); + if (! section) return NULL; - switch (bfd_section_size (abfd, section)) + switch (bfd_section_size (section)) { case 48 * 4: - if (cell) - return tdesc_powerpc_cell32l; - else if (vsx) - return tdesc_powerpc_vsx32l; - else if (altivec) - return tdesc_powerpc_altivec32l; - else - return tdesc_powerpc_32l; - + features.wordsize = 4; + break; case 48 * 8: - if (cell) - return tdesc_powerpc_cell64l; - else if (vsx) - return tdesc_powerpc_vsx64l; - else if (altivec) - return tdesc_powerpc_altivec64l; - else - return tdesc_powerpc_64l; - + features.wordsize = 8; + break; default: return NULL; } + + if (altivec) + features.altivec = true; + + if (vsx) + features.vsx = true; + + CORE_ADDR hwcap = linux_get_hwcap (target); + + features.isa205 = ppc_linux_has_isa205 (hwcap); + + if (ppr && dscr) + { + features.ppr_dscr = true; + + /* We don't require the EBB note section to be present in the + core file to select isa207 because these registers could have + been unavailable when the core file was created. They will + be in the tdep but will show as unavailable. */ + if (tar && pmu) + { + features.isa207 = true; + if (htmspr) + features.htm = true; + } + } + + return ppc_linux_match_description (features); } @@ -919,9 +1651,9 @@ ppc_elfv2_skip_entrypoint (struct gdbarch *gdbarch, CORE_ADDR pc) if (MSYMBOL_TARGET_FLAG_1 (fun.minsym)) local_entry_offset = 8; - if (MSYMBOL_VALUE_ADDRESS (fun.minsym) <= pc - && pc < MSYMBOL_VALUE_ADDRESS (fun.minsym) + local_entry_offset) - return MSYMBOL_VALUE_ADDRESS (fun.minsym) + local_entry_offset; + if (BMSYMBOL_VALUE_ADDRESS (fun) <= pc + && pc < BMSYMBOL_VALUE_ADDRESS (fun) + local_entry_offset) + return BMSYMBOL_VALUE_ADDRESS (fun) + local_entry_offset; return pc; } @@ -967,7 +1699,7 @@ ppc_stap_parse_special_token (struct gdbarch *gdbarch, } len = s - p->arg; - regname = alloca (len + 2); + regname = (char *) alloca (len + 2); regname[0] = 'r'; strncpy (regname + 1, p->arg, len); @@ -978,11 +1710,11 @@ ppc_stap_parse_special_token (struct gdbarch *gdbarch, error (_("Invalid register name `%s' on expression `%s'."), regname, p->saved_arg); - write_exp_elt_opcode (OP_REGISTER); + write_exp_elt_opcode (&p->pstate, OP_REGISTER); str.ptr = regname; str.length = len; - write_exp_string (str); - write_exp_elt_opcode (OP_REGISTER); + write_exp_string (&p->pstate, str); + write_exp_elt_opcode (&p->pstate, OP_REGISTER); p->arg = s; } @@ -996,305 +1728,265 @@ ppc_stap_parse_special_token (struct gdbarch *gdbarch, return 1; } -/* Cell/B.E. active SPE context tracking support. */ - -static struct objfile *spe_context_objfile = NULL; -static CORE_ADDR spe_context_lm_addr = 0; -static CORE_ADDR spe_context_offset = 0; - -static ptid_t spe_context_cache_ptid; -static CORE_ADDR spe_context_cache_address; +/* Initialize linux_record_tdep if not initialized yet. + WORDSIZE is 4 or 8 for 32- or 64-bit PowerPC Linux respectively. + Sizes of data structures are initialized accordingly. */ -/* Hook into inferior_created, solib_loaded, and solib_unloaded observers - to track whether we've loaded a version of libspe2 (as static or dynamic - library) that provides the __spe_current_active_context variable. */ static void -ppc_linux_spe_context_lookup (struct objfile *objfile) +ppc_init_linux_record_tdep (struct linux_record_tdep *record_tdep, + int wordsize) { - struct bound_minimal_symbol sym; + /* Simply return if it had been initialized. */ + if (record_tdep->size_pointer != 0) + return; - if (!objfile) - { - spe_context_objfile = NULL; - spe_context_lm_addr = 0; - spe_context_offset = 0; - spe_context_cache_ptid = minus_one_ptid; - spe_context_cache_address = 0; - return; - } + /* These values are the size of the type that will be used in a system + call. They are obtained from Linux Kernel source. */ - sym = lookup_minimal_symbol ("__spe_current_active_context", NULL, objfile); - if (sym.minsym) + if (wordsize == 8) { - spe_context_objfile = objfile; - spe_context_lm_addr = svr4_fetch_objfile_link_map (objfile); - spe_context_offset = MSYMBOL_VALUE_ADDRESS (sym.minsym); - spe_context_cache_ptid = minus_one_ptid; - spe_context_cache_address = 0; - return; + record_tdep->size_pointer = 8; + record_tdep->size__old_kernel_stat = 32; + record_tdep->size_tms = 32; + record_tdep->size_loff_t = 8; + record_tdep->size_flock = 32; + record_tdep->size_oldold_utsname = 45; + record_tdep->size_ustat = 32; + record_tdep->size_old_sigaction = 32; + record_tdep->size_old_sigset_t = 8; + record_tdep->size_rlimit = 16; + record_tdep->size_rusage = 144; + record_tdep->size_timeval = 16; + record_tdep->size_timezone = 8; + record_tdep->size_old_gid_t = 4; + record_tdep->size_old_uid_t = 4; + record_tdep->size_fd_set = 128; + record_tdep->size_old_dirent = 280; + record_tdep->size_statfs = 120; + record_tdep->size_statfs64 = 120; + record_tdep->size_sockaddr = 16; + record_tdep->size_int = 4; + record_tdep->size_long = 8; + record_tdep->size_ulong = 8; + record_tdep->size_msghdr = 56; + record_tdep->size_itimerval = 32; + record_tdep->size_stat = 144; + record_tdep->size_old_utsname = 325; + record_tdep->size_sysinfo = 112; + record_tdep->size_msqid_ds = 120; + record_tdep->size_shmid_ds = 112; + record_tdep->size_new_utsname = 390; + record_tdep->size_timex = 208; + record_tdep->size_mem_dqinfo = 24; + record_tdep->size_if_dqblk = 72; + record_tdep->size_fs_quota_stat = 80; + record_tdep->size_timespec = 16; + record_tdep->size_pollfd = 8; + record_tdep->size_NFS_FHSIZE = 32; + record_tdep->size_knfsd_fh = 132; + record_tdep->size_TASK_COMM_LEN = 16; + record_tdep->size_sigaction = 32; + record_tdep->size_sigset_t = 8; + record_tdep->size_siginfo_t = 128; + record_tdep->size_cap_user_data_t = 8; + record_tdep->size_stack_t = 24; + record_tdep->size_off_t = 8; + record_tdep->size_stat64 = 104; + record_tdep->size_gid_t = 4; + record_tdep->size_uid_t = 4; + record_tdep->size_PAGE_SIZE = 0x10000; /* 64KB */ + record_tdep->size_flock64 = 32; + record_tdep->size_io_event = 32; + record_tdep->size_iocb = 64; + record_tdep->size_epoll_event = 16; + record_tdep->size_itimerspec = 32; + record_tdep->size_mq_attr = 64; + record_tdep->size_termios = 44; + record_tdep->size_pid_t = 4; + record_tdep->size_winsize = 8; + record_tdep->size_serial_struct = 72; + record_tdep->size_serial_icounter_struct = 80; + record_tdep->size_size_t = 8; + record_tdep->size_iovec = 16; + record_tdep->size_time_t = 8; } -} - -static void -ppc_linux_spe_context_inferior_created (struct target_ops *t, int from_tty) -{ - struct objfile *objfile; - - ppc_linux_spe_context_lookup (NULL); - ALL_OBJFILES (objfile) - ppc_linux_spe_context_lookup (objfile); -} - -static void -ppc_linux_spe_context_solib_loaded (struct so_list *so) -{ - if (strstr (so->so_original_name, "/libspe") != NULL) + else if (wordsize == 4) { - solib_read_symbols (so, 0); - ppc_linux_spe_context_lookup (so->objfile); + record_tdep->size_pointer = 4; + record_tdep->size__old_kernel_stat = 32; + record_tdep->size_tms = 16; + record_tdep->size_loff_t = 8; + record_tdep->size_flock = 16; + record_tdep->size_oldold_utsname = 45; + record_tdep->size_ustat = 20; + record_tdep->size_old_sigaction = 16; + record_tdep->size_old_sigset_t = 4; + record_tdep->size_rlimit = 8; + record_tdep->size_rusage = 72; + record_tdep->size_timeval = 8; + record_tdep->size_timezone = 8; + record_tdep->size_old_gid_t = 4; + record_tdep->size_old_uid_t = 4; + record_tdep->size_fd_set = 128; + record_tdep->size_old_dirent = 268; + record_tdep->size_statfs = 64; + record_tdep->size_statfs64 = 88; + record_tdep->size_sockaddr = 16; + record_tdep->size_int = 4; + record_tdep->size_long = 4; + record_tdep->size_ulong = 4; + record_tdep->size_msghdr = 28; + record_tdep->size_itimerval = 16; + record_tdep->size_stat = 88; + record_tdep->size_old_utsname = 325; + record_tdep->size_sysinfo = 64; + record_tdep->size_msqid_ds = 68; + record_tdep->size_shmid_ds = 60; + record_tdep->size_new_utsname = 390; + record_tdep->size_timex = 128; + record_tdep->size_mem_dqinfo = 24; + record_tdep->size_if_dqblk = 72; + record_tdep->size_fs_quota_stat = 80; + record_tdep->size_timespec = 8; + record_tdep->size_pollfd = 8; + record_tdep->size_NFS_FHSIZE = 32; + record_tdep->size_knfsd_fh = 132; + record_tdep->size_TASK_COMM_LEN = 16; + record_tdep->size_sigaction = 20; + record_tdep->size_sigset_t = 8; + record_tdep->size_siginfo_t = 128; + record_tdep->size_cap_user_data_t = 4; + record_tdep->size_stack_t = 12; + record_tdep->size_off_t = 4; + record_tdep->size_stat64 = 104; + record_tdep->size_gid_t = 4; + record_tdep->size_uid_t = 4; + record_tdep->size_PAGE_SIZE = 0x10000; /* 64KB */ + record_tdep->size_flock64 = 32; + record_tdep->size_io_event = 32; + record_tdep->size_iocb = 64; + record_tdep->size_epoll_event = 16; + record_tdep->size_itimerspec = 16; + record_tdep->size_mq_attr = 32; + record_tdep->size_termios = 44; + record_tdep->size_pid_t = 4; + record_tdep->size_winsize = 8; + record_tdep->size_serial_struct = 60; + record_tdep->size_serial_icounter_struct = 80; + record_tdep->size_size_t = 4; + record_tdep->size_iovec = 8; + record_tdep->size_time_t = 4; } -} - -static void -ppc_linux_spe_context_solib_unloaded (struct so_list *so) -{ - if (so->objfile == spe_context_objfile) - ppc_linux_spe_context_lookup (NULL); -} - -/* Retrieve contents of the N'th element in the current thread's - linked SPE context list into ID and NPC. Return the address of - said context element, or 0 if not found. */ -static CORE_ADDR -ppc_linux_spe_context (int wordsize, enum bfd_endian byte_order, - int n, int *id, unsigned int *npc) -{ - CORE_ADDR spe_context = 0; - gdb_byte buf[16]; - int i; - - /* Quick exit if we have not found __spe_current_active_context. */ - if (!spe_context_objfile) - return 0; - - /* Look up cached address of thread-local variable. */ - if (!ptid_equal (spe_context_cache_ptid, inferior_ptid)) - { - struct target_ops *target = ¤t_target; - volatile struct gdb_exception ex; - - while (target && !target->to_get_thread_local_address) - target = find_target_beneath (target); - if (!target) - return 0; - - TRY_CATCH (ex, RETURN_MASK_ERROR) - { - /* We do not call target_translate_tls_address here, because - svr4_fetch_objfile_link_map may invalidate the frame chain, - which must not do while inside a frame sniffer. - - Instead, we have cached the lm_addr value, and use that to - directly call the target's to_get_thread_local_address. */ - spe_context_cache_address - = target->to_get_thread_local_address (target, inferior_ptid, - spe_context_lm_addr, - spe_context_offset); - spe_context_cache_ptid = inferior_ptid; - } - - if (ex.reason < 0) - return 0; - } - - /* Read variable value. */ - if (target_read_memory (spe_context_cache_address, buf, wordsize) == 0) - spe_context = extract_unsigned_integer (buf, wordsize, byte_order); - - /* Cyle through to N'th linked list element. */ - for (i = 0; i < n && spe_context; i++) - if (target_read_memory (spe_context + align_up (12, wordsize), - buf, wordsize) == 0) - spe_context = extract_unsigned_integer (buf, wordsize, byte_order); - else - spe_context = 0; - - /* Read current context. */ - if (spe_context - && target_read_memory (spe_context, buf, 12) != 0) - spe_context = 0; - - /* Extract data elements. */ - if (spe_context) - { - if (id) - *id = extract_signed_integer (buf, 4, byte_order); - if (npc) - *npc = extract_unsigned_integer (buf + 4, 4, byte_order); - } - - return spe_context; -} - - -/* Cell/B.E. cross-architecture unwinder support. */ - -struct ppu2spu_cache -{ - struct frame_id frame_id; - struct regcache *regcache; -}; - -static struct gdbarch * -ppu2spu_prev_arch (struct frame_info *this_frame, void **this_cache) -{ - struct ppu2spu_cache *cache = *this_cache; - return get_regcache_arch (cache->regcache); -} - -static void -ppu2spu_this_id (struct frame_info *this_frame, - void **this_cache, struct frame_id *this_id) -{ - struct ppu2spu_cache *cache = *this_cache; - *this_id = cache->frame_id; -} - -static struct value * -ppu2spu_prev_register (struct frame_info *this_frame, - void **this_cache, int regnum) -{ - struct ppu2spu_cache *cache = *this_cache; - struct gdbarch *gdbarch = get_regcache_arch (cache->regcache); - gdb_byte *buf; - - buf = alloca (register_size (gdbarch, regnum)); - - if (regnum < gdbarch_num_regs (gdbarch)) - regcache_raw_read (cache->regcache, regnum, buf); else - gdbarch_pseudo_register_read (gdbarch, cache->regcache, regnum, buf); - - return frame_unwind_got_bytes (this_frame, regnum, buf); + internal_error (__FILE__, __LINE__, _("unexpected wordsize")); + + /* These values are the second argument of system call "sys_fcntl" + and "sys_fcntl64". They are obtained from Linux Kernel source. */ + record_tdep->fcntl_F_GETLK = 5; + record_tdep->fcntl_F_GETLK64 = 12; + record_tdep->fcntl_F_SETLK64 = 13; + record_tdep->fcntl_F_SETLKW64 = 14; + + record_tdep->arg1 = PPC_R0_REGNUM + 3; + record_tdep->arg2 = PPC_R0_REGNUM + 4; + record_tdep->arg3 = PPC_R0_REGNUM + 5; + record_tdep->arg4 = PPC_R0_REGNUM + 6; + record_tdep->arg5 = PPC_R0_REGNUM + 7; + record_tdep->arg6 = PPC_R0_REGNUM + 8; + + /* These values are the second argument of system call "sys_ioctl". + They are obtained from Linux Kernel source. + See arch/powerpc/include/uapi/asm/ioctls.h. */ + record_tdep->ioctl_TCGETS = 0x403c7413; + record_tdep->ioctl_TCSETS = 0x803c7414; + record_tdep->ioctl_TCSETSW = 0x803c7415; + record_tdep->ioctl_TCSETSF = 0x803c7416; + record_tdep->ioctl_TCGETA = 0x40147417; + record_tdep->ioctl_TCSETA = 0x80147418; + record_tdep->ioctl_TCSETAW = 0x80147419; + record_tdep->ioctl_TCSETAF = 0x8014741c; + record_tdep->ioctl_TCSBRK = 0x2000741d; + record_tdep->ioctl_TCXONC = 0x2000741e; + record_tdep->ioctl_TCFLSH = 0x2000741f; + record_tdep->ioctl_TIOCEXCL = 0x540c; + record_tdep->ioctl_TIOCNXCL = 0x540d; + record_tdep->ioctl_TIOCSCTTY = 0x540e; + record_tdep->ioctl_TIOCGPGRP = 0x40047477; + record_tdep->ioctl_TIOCSPGRP = 0x80047476; + record_tdep->ioctl_TIOCOUTQ = 0x40047473; + record_tdep->ioctl_TIOCSTI = 0x5412; + record_tdep->ioctl_TIOCGWINSZ = 0x40087468; + record_tdep->ioctl_TIOCSWINSZ = 0x80087467; + record_tdep->ioctl_TIOCMGET = 0x5415; + record_tdep->ioctl_TIOCMBIS = 0x5416; + record_tdep->ioctl_TIOCMBIC = 0x5417; + record_tdep->ioctl_TIOCMSET = 0x5418; + record_tdep->ioctl_TIOCGSOFTCAR = 0x5419; + record_tdep->ioctl_TIOCSSOFTCAR = 0x541a; + record_tdep->ioctl_FIONREAD = 0x4004667f; + record_tdep->ioctl_TIOCINQ = 0x4004667f; + record_tdep->ioctl_TIOCLINUX = 0x541c; + record_tdep->ioctl_TIOCCONS = 0x541d; + record_tdep->ioctl_TIOCGSERIAL = 0x541e; + record_tdep->ioctl_TIOCSSERIAL = 0x541f; + record_tdep->ioctl_TIOCPKT = 0x5420; + record_tdep->ioctl_FIONBIO = 0x8004667e; + record_tdep->ioctl_TIOCNOTTY = 0x5422; + record_tdep->ioctl_TIOCSETD = 0x5423; + record_tdep->ioctl_TIOCGETD = 0x5424; + record_tdep->ioctl_TCSBRKP = 0x5425; + record_tdep->ioctl_TIOCSBRK = 0x5427; + record_tdep->ioctl_TIOCCBRK = 0x5428; + record_tdep->ioctl_TIOCGSID = 0x5429; + record_tdep->ioctl_TIOCGPTN = 0x40045430; + record_tdep->ioctl_TIOCSPTLCK = 0x80045431; + record_tdep->ioctl_FIONCLEX = 0x20006602; + record_tdep->ioctl_FIOCLEX = 0x20006601; + record_tdep->ioctl_FIOASYNC = 0x8004667d; + record_tdep->ioctl_TIOCSERCONFIG = 0x5453; + record_tdep->ioctl_TIOCSERGWILD = 0x5454; + record_tdep->ioctl_TIOCSERSWILD = 0x5455; + record_tdep->ioctl_TIOCGLCKTRMIOS = 0x5456; + record_tdep->ioctl_TIOCSLCKTRMIOS = 0x5457; + record_tdep->ioctl_TIOCSERGSTRUCT = 0x5458; + record_tdep->ioctl_TIOCSERGETLSR = 0x5459; + record_tdep->ioctl_TIOCSERGETMULTI = 0x545a; + record_tdep->ioctl_TIOCSERSETMULTI = 0x545b; + record_tdep->ioctl_TIOCMIWAIT = 0x545c; + record_tdep->ioctl_TIOCGICOUNT = 0x545d; + record_tdep->ioctl_FIOQSIZE = 0x40086680; } -struct ppu2spu_data -{ - struct gdbarch *gdbarch; - int id; - unsigned int npc; - gdb_byte gprs[128*16]; -}; - -static int -ppu2spu_unwind_register (void *src, int regnum, gdb_byte *buf) -{ - struct ppu2spu_data *data = src; - enum bfd_endian byte_order = gdbarch_byte_order (data->gdbarch); - - if (regnum >= 0 && regnum < SPU_NUM_GPRS) - memcpy (buf, data->gprs + 16*regnum, 16); - else if (regnum == SPU_ID_REGNUM) - store_unsigned_integer (buf, 4, byte_order, data->id); - else if (regnum == SPU_PC_REGNUM) - store_unsigned_integer (buf, 4, byte_order, data->npc); - else - return REG_UNAVAILABLE; - - return REG_VALID; -} +/* Return a floating-point format for a floating-point variable of + length LEN in bits. If non-NULL, NAME is the name of its type. + If no suitable type is found, return NULL. */ -static int -ppu2spu_sniffer (const struct frame_unwind *self, - struct frame_info *this_frame, void **this_prologue_cache) +static const struct floatformat ** +ppc_floatformat_for_type (struct gdbarch *gdbarch, + const char *name, int len) { - struct gdbarch *gdbarch = get_frame_arch (this_frame); - struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); - struct ppu2spu_data data; - struct frame_info *fi; - CORE_ADDR base, func, backchain, spe_context; - gdb_byte buf[8]; - int n = 0; - - /* Count the number of SPU contexts already in the frame chain. */ - for (fi = get_next_frame (this_frame); fi; fi = get_next_frame (fi)) - if (get_frame_type (fi) == ARCH_FRAME - && gdbarch_bfd_arch_info (get_frame_arch (fi))->arch == bfd_arch_spu) - n++; - - base = get_frame_sp (this_frame); - func = get_frame_pc (this_frame); - if (target_read_memory (base, buf, tdep->wordsize)) - return 0; - backchain = extract_unsigned_integer (buf, tdep->wordsize, byte_order); - - spe_context = ppc_linux_spe_context (tdep->wordsize, byte_order, - n, &data.id, &data.npc); - if (spe_context && base <= spe_context && spe_context < backchain) + if (len == 128 && name) { - char annex[32]; - - /* Find gdbarch for SPU. */ - struct gdbarch_info info; - gdbarch_info_init (&info); - info.bfd_arch_info = bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu); - info.byte_order = BFD_ENDIAN_BIG; - info.osabi = GDB_OSABI_LINUX; - info.tdep_info = (void *) &data.id; - data.gdbarch = gdbarch_find_by_info (info); - if (!data.gdbarch) - return 0; - - xsnprintf (annex, sizeof annex, "%d/regs", data.id); - if (target_read (¤t_target, TARGET_OBJECT_SPU, annex, - data.gprs, 0, sizeof data.gprs) - == sizeof data.gprs) - { - struct ppu2spu_cache *cache - = FRAME_OBSTACK_CALLOC (1, struct ppu2spu_cache); - - struct address_space *aspace = get_frame_address_space (this_frame); - struct regcache *regcache = regcache_xmalloc (data.gdbarch, aspace); - struct cleanup *cleanups = make_cleanup_regcache_xfree (regcache); - regcache_save (regcache, ppu2spu_unwind_register, &data); - discard_cleanups (cleanups); - - cache->frame_id = frame_id_build (base, func); - cache->regcache = regcache; - *this_prologue_cache = cache; - return 1; - } + if (strcmp (name, "__float128") == 0 + || strcmp (name, "_Float128") == 0 + || strcmp (name, "_Float64x") == 0 + || strcmp (name, "complex _Float128") == 0 + || strcmp (name, "complex _Float64x") == 0) + return floatformats_ia64_quad; + + if (strcmp (name, "__ibm128") == 0) + return floatformats_ibm_long_double; } - return 0; + return default_floatformat_for_type (gdbarch, name, len); } -static void -ppu2spu_dealloc_cache (struct frame_info *self, void *this_cache) -{ - struct ppu2spu_cache *cache = this_cache; - regcache_xfree (cache->regcache); -} - -static const struct frame_unwind ppu2spu_unwind = { - ARCH_FRAME, - default_frame_unwind_stop_reason, - ppu2spu_this_id, - ppu2spu_prev_register, - NULL, - ppu2spu_sniffer, - ppu2spu_dealloc_cache, - ppu2spu_prev_arch, -}; - - static void ppc_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - struct tdesc_arch_data *tdesc_data = (void *) info.tdep_info; + struct tdesc_arch_data *tdesc_data = info.tdesc_data; static const char *const stap_integer_prefixes[] = { "i", NULL }; static const char *const stap_register_indirection_prefixes[] = { "(", NULL }; @@ -1304,12 +1996,18 @@ ppc_linux_init_abi (struct gdbarch_info info, linux_init_abi (info, gdbarch); /* PPC GNU/Linux uses either 64-bit or 128-bit long doubles; where - 128-bit, they are IBM long double, not IEEE quad long double as - in the System V ABI PowerPC Processor Supplement. We can safely - let them default to 128-bit, since the debug info will give the - size of type actually used in each case. */ + 128-bit, they can be either IBM long double or IEEE quad long double. + The 64-bit long double case will be detected automatically using + the size specified in debug info. We use a .gnu.attribute flag + to distinguish between the IBM long double and IEEE quad cases. */ set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT); - set_gdbarch_long_double_format (gdbarch, floatformats_ibm_long_double); + if (tdep->long_double_abi == POWERPC_LONG_DOUBLE_IEEE128) + set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad); + else + set_gdbarch_long_double_format (gdbarch, floatformats_ibm_long_double); + + /* Support for floating-point data type variants. */ + set_gdbarch_floatformat_for_type (gdbarch, ppc_floatformat_for_type); /* Handle inferior calls during interrupted system calls. */ set_gdbarch_write_pc (gdbarch, ppc_linux_write_pc); @@ -1348,7 +2046,7 @@ ppc_linux_init_abi (struct gdbarch_info info, (gdbarch, svr4_ilp32_fetch_link_map_offsets); /* Setting the correct XML syscall filename. */ - set_xml_syscall_file_name (XML_SYSCALL_FILENAME_PPC); + set_xml_syscall_file_name (gdbarch, XML_SYSCALL_FILENAME_PPC); /* Trampolines. */ tramp_frame_prepend_unwinder (gdbarch, @@ -1362,19 +2060,6 @@ ppc_linux_init_abi (struct gdbarch_info info, else set_gdbarch_gcore_bfd_target (gdbarch, "elf32-powerpc"); - /* Supported register sections. */ - if (tdesc_find_feature (info.target_desc, - "org.gnu.gdb.power.vsx")) - set_gdbarch_core_regset_sections (gdbarch, - ppc_linux_vsx_regset_sections); - else if (tdesc_find_feature (info.target_desc, - "org.gnu.gdb.power.altivec")) - set_gdbarch_core_regset_sections (gdbarch, - ppc_linux_vmx_regset_sections); - else - set_gdbarch_core_regset_sections (gdbarch, - ppc_linux_fp_regset_sections); - if (powerpc_so_ops.in_dynsym_resolve_code == NULL) { powerpc_so_ops = svr4_so_ops; @@ -1413,7 +2098,7 @@ ppc_linux_init_abi (struct gdbarch_info info, (gdbarch, svr4_lp64_fetch_link_map_offsets); /* Setting the correct XML syscall filename. */ - set_xml_syscall_file_name (XML_SYSCALL_FILENAME_PPC64); + set_xml_syscall_file_name (gdbarch, XML_SYSCALL_FILENAME_PPC64); /* Trampolines. */ tramp_frame_prepend_unwinder (gdbarch, @@ -1426,30 +2111,11 @@ ppc_linux_init_abi (struct gdbarch_info info, set_gdbarch_gcore_bfd_target (gdbarch, "elf64-powerpcle"); else set_gdbarch_gcore_bfd_target (gdbarch, "elf64-powerpc"); - - /* Supported register sections. */ - if (tdesc_find_feature (info.target_desc, - "org.gnu.gdb.power.vsx")) - set_gdbarch_core_regset_sections (gdbarch, - ppc64_linux_vsx_regset_sections); - else if (tdesc_find_feature (info.target_desc, - "org.gnu.gdb.power.altivec")) - set_gdbarch_core_regset_sections (gdbarch, - ppc64_linux_vmx_regset_sections); - else - set_gdbarch_core_regset_sections (gdbarch, - ppc64_linux_fp_regset_sections); } - /* PPC32 uses a different prpsinfo32 compared to most other Linux - archs. */ - if (tdep->wordsize == 4) - set_gdbarch_elfcore_write_linux_prpsinfo (gdbarch, - elfcore_write_ppc_linux_prpsinfo32); - - set_gdbarch_regset_from_core_section (gdbarch, - ppc_linux_regset_from_core_section); set_gdbarch_core_read_description (gdbarch, ppc_linux_core_read_description); + set_gdbarch_iterate_over_regset_sections (gdbarch, + ppc_linux_iterate_over_regset_sections); /* Enable TLS support. */ set_gdbarch_fetch_tls_load_module_address (gdbarch, @@ -1477,32 +2143,22 @@ ppc_linux_init_abi (struct gdbarch_info info, } } - /* Enable Cell/B.E. if supported by the target. */ - if (tdesc_compatible_p (info.target_desc, - bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu))) - { - /* Cell/B.E. multi-architecture support. */ - set_spu_solib_ops (gdbarch); - - /* Cell/B.E. cross-architecture unwinder support. */ - frame_unwind_prepend_unwinder (gdbarch, &ppu2spu_unwind); + set_gdbarch_displaced_step_location (gdbarch, + linux_displaced_step_location); - /* The default displaced_step_at_entry_point doesn't work for - SPU stand-alone executables. */ - set_gdbarch_displaced_step_location (gdbarch, - ppc_linux_displaced_step_location); - } + /* Support reverse debugging. */ + set_gdbarch_process_record (gdbarch, ppc_process_record); + set_gdbarch_process_record_signal (gdbarch, ppc_linux_record_signal); + tdep->ppc_syscall_record = ppc_linux_syscall_record; - set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type); + ppc_init_linux_record_tdep (&ppc_linux_record_tdep, 4); + ppc_init_linux_record_tdep (&ppc64_linux_record_tdep, 8); } -/* Provide a prototype to silence -Wmissing-prototypes. */ -extern initialize_file_ftype _initialize_ppc_linux_tdep; - void _initialize_ppc_linux_tdep (void) { - /* Register for all sub-familes of the POWER/PowerPC: 32-bit and + /* Register for all sub-families of the POWER/PowerPC: 32-bit and 64-bit PowerPC, and the older rs6k. */ gdbarch_register_osabi (bfd_arch_powerpc, bfd_mach_ppc, GDB_OSABI_LINUX, ppc_linux_init_abi); @@ -1511,28 +2167,24 @@ _initialize_ppc_linux_tdep (void) gdbarch_register_osabi (bfd_arch_rs6000, bfd_mach_rs6k, GDB_OSABI_LINUX, ppc_linux_init_abi); - /* Attach to inferior_created observer. */ - observer_attach_inferior_created (ppc_linux_inferior_created); - - /* Attach to observers to track __spe_current_active_context. */ - observer_attach_inferior_created (ppc_linux_spe_context_inferior_created); - observer_attach_solib_loaded (ppc_linux_spe_context_solib_loaded); - observer_attach_solib_unloaded (ppc_linux_spe_context_solib_unloaded); - /* Initialize the Linux target descriptions. */ initialize_tdesc_powerpc_32l (); initialize_tdesc_powerpc_altivec32l (); - initialize_tdesc_powerpc_cell32l (); initialize_tdesc_powerpc_vsx32l (); initialize_tdesc_powerpc_isa205_32l (); initialize_tdesc_powerpc_isa205_altivec32l (); initialize_tdesc_powerpc_isa205_vsx32l (); + initialize_tdesc_powerpc_isa205_ppr_dscr_vsx32l (); + initialize_tdesc_powerpc_isa207_vsx32l (); + initialize_tdesc_powerpc_isa207_htm_vsx32l (); initialize_tdesc_powerpc_64l (); initialize_tdesc_powerpc_altivec64l (); - initialize_tdesc_powerpc_cell64l (); initialize_tdesc_powerpc_vsx64l (); initialize_tdesc_powerpc_isa205_64l (); initialize_tdesc_powerpc_isa205_altivec64l (); initialize_tdesc_powerpc_isa205_vsx64l (); + initialize_tdesc_powerpc_isa205_ppr_dscr_vsx64l (); + initialize_tdesc_powerpc_isa207_vsx64l (); + initialize_tdesc_powerpc_isa207_htm_vsx64l (); initialize_tdesc_powerpc_e500l (); }