X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;ds=sidebyside;f=gdb%2Fppc-linux-tdep.c;h=817a002715aaff9e890e354b109ff3e8c737697c;hb=1f88d0c87c37d3a15fa6376335e8b0d1c79d85aa;hp=66cbba303b8126ad3545ded5e20666a1fc33cf07;hpb=efd66ac6698323d9523a4dce352008c4c835812e;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c index 66cbba303b..817a002715 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) 1986-2018 Free Software Foundation, Inc. This file is part of GDB. @@ -37,19 +37,23 @@ #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" @@ -58,7 +62,7 @@ #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" @@ -211,20 +215,18 @@ 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 +235,6 @@ 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 +258,8 @@ 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 +268,30 @@ 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 @@ -351,41 +318,72 @@ powerpc_linux_in_dynsym_resolve_code (CORE_ADDR pc) 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 +393,22 @@ 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 +419,8 @@ 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) @@ -428,22 +428,40 @@ 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); } } +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 = @@ -487,47 +500,69 @@ 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, + 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 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 }; const struct regset * @@ -542,25 +577,50 @@ 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) +{ + 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) { - struct gdbarch_tdep *tdep = gdbarch_tdep (core_arch); - if (strcmp (sect_name, ".reg") == 0) + return &ppc32_linux_vsxregset; +} + +/* 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; + + 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) { - if (tdep->wordsize == 4) - return &ppc32_linux_gregset; - else - return &ppc64_linux_gregset; + 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 (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; + + if (have_vsx) + cb (".reg-ppc-vsx", PPC_LINUX_SIZEOF_VSXREGSET, PPC_LINUX_SIZEOF_VSXREGSET, + &ppc32_linux_vsxregset, "POWER7 VSX", cb_data); } static void @@ -686,8 +746,8 @@ 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 +756,9 @@ 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 +767,8 @@ 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 +777,14 @@ 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 +803,205 @@ 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 */ + +static struct linux_record_tdep ppc_linux_record_tdep; +static struct linux_record_tdep ppc64_linux_record_tdep; + +/* 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 preocess reocrd 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; + int i; + + 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); - ret = extract_signed_integer (buf, tdep->wordsize, byte_order); - do_cleanups (cleanbuf); + if (ret != 0) + return ret; - return ret; + /* Record registers clobbered during syscall. */ + 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_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); @@ -835,7 +1020,7 @@ ppc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) static int ppc_linux_spu_section (bfd *abfd, asection *asect, void *user_data) { - return strncmp (bfd_section_name (abfd, asect), "SPU/", 4) == 0; + return startswith (bfd_section_name (abfd, asect), "SPU/"); } static const struct target_desc * @@ -843,38 +1028,44 @@ ppc_linux_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd) { + struct ppc_linux_features features = ppc_linux_no_features; asection *cell = bfd_sections_find_if (abfd, ppc_linux_spu_section, NULL); 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"); + if (! section) return NULL; switch (bfd_section_size (abfd, 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 (cell) + features.cell = true; + + if (altivec) + features.altivec = true; + + if (vsx) + features.vsx = true; + + CORE_ADDR hwcap; + + if (target_auxv_search (target, AT_HWCAP, &hwcap) != 1) + hwcap = 0; + + features.isa205 = ppc_linux_has_isa205 (hwcap); + + return ppc_linux_match_description (features); } @@ -919,9 +1110,9 @@ 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 +1158,7 @@ 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 +1169,11 @@ 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; } @@ -1011,7 +1202,7 @@ static CORE_ADDR spe_context_cache_address; static void ppc_linux_spe_context_lookup (struct objfile *objfile) { - struct minimal_symbol *sym; + struct bound_minimal_symbol sym; if (!objfile) { @@ -1024,11 +1215,11 @@ ppc_linux_spe_context_lookup (struct objfile *objfile) } sym = lookup_minimal_symbol ("__spe_current_active_context", NULL, objfile); - if (sym) + if (sym.minsym) { spe_context_objfile = objfile; spe_context_lm_addr = svr4_fetch_objfile_link_map (objfile); - spe_context_offset = MSYMBOL_VALUE_ADDRESS (sym); + spe_context_offset = MSYMBOL_VALUE_RAW_ADDRESS (sym.minsym); spe_context_cache_ptid = minus_one_ptid; spe_context_cache_address = 0; return; @@ -1078,17 +1269,11 @@ ppc_linux_spe_context (int wordsize, enum bfd_endian byte_order, return 0; /* Look up cached address of thread-local variable. */ - if (!ptid_equal (spe_context_cache_ptid, inferior_ptid)) + if (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; + struct target_ops *target = current_top_target (); - TRY_CATCH (ex, RETURN_MASK_ERROR) + TRY { /* We do not call target_translate_tls_address here, because svr4_fetch_objfile_link_map may invalidate the frame chain, @@ -1097,14 +1282,17 @@ ppc_linux_spe_context (int wordsize, enum bfd_endian byte_order, 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); + = target->get_thread_local_address (inferior_ptid, + spe_context_lm_addr, + spe_context_offset); spe_context_cache_ptid = inferior_ptid; } - if (ex.reason < 0) - return 0; + CATCH (ex, RETURN_MASK_ERROR) + { + return 0; + } + END_CATCH } /* Read variable value. */ @@ -1142,21 +1330,21 @@ ppc_linux_spe_context (int wordsize, enum bfd_endian byte_order, struct ppu2spu_cache { struct frame_id frame_id; - struct regcache *regcache; + readonly_detached_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); + struct ppu2spu_cache *cache = (struct ppu2spu_cache *) *this_cache; + return cache->regcache->arch (); } static void ppu2spu_this_id (struct frame_info *this_frame, void **this_cache, struct frame_id *this_id) { - struct ppu2spu_cache *cache = *this_cache; + struct ppu2spu_cache *cache = (struct ppu2spu_cache *) *this_cache; *this_id = cache->frame_id; } @@ -1164,17 +1352,13 @@ 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); + struct ppu2spu_cache *cache = (struct ppu2spu_cache *) *this_cache; + struct gdbarch *gdbarch = cache->regcache->arch (); 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); + buf = (gdb_byte *) alloca (register_size (gdbarch, regnum)); + cache->regcache->cooked_read (regnum, buf); return frame_unwind_got_bytes (this_frame, regnum, buf); } @@ -1186,10 +1370,9 @@ struct ppu2spu_data gdb_byte gprs[128*16]; }; -static int -ppu2spu_unwind_register (void *src, int regnum, gdb_byte *buf) +static enum register_status +ppu2spu_unwind_register (ppu2spu_data *data, 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) @@ -1241,27 +1424,27 @@ ppu2spu_sniffer (const struct frame_unwind *self, 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; + info.id = &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, + if (target_read (current_top_target (), TARGET_OBJECT_SPU, annex, data.gprs, 0, sizeof data.gprs) == sizeof data.gprs) { + auto cooked_read = [&data] (int regnum, gdb_byte *buf) + { + return ppu2spu_unwind_register (&data, regnum, buf); + }; 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); + std::unique_ptr regcache + (new readonly_detached_regcache (data.gdbarch, cooked_read)); cache->frame_id = frame_id_build (base, func); - cache->regcache = regcache; + cache->regcache = regcache.release (); *this_prologue_cache = cache; return 1; } @@ -1273,8 +1456,8 @@ ppu2spu_sniffer (const struct frame_unwind *self, static void ppu2spu_dealloc_cache (struct frame_info *self, void *this_cache) { - struct ppu2spu_cache *cache = this_cache; - regcache_xfree (cache->regcache); + struct ppu2spu_cache *cache = (struct ppu2spu_cache *) this_cache; + delete cache->regcache; } static const struct frame_unwind ppu2spu_unwind = { @@ -1288,13 +1471,265 @@ static const struct frame_unwind ppu2spu_unwind = { ppu2spu_prev_arch, }; +/* 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. */ + +static void +ppc_init_linux_record_tdep (struct linux_record_tdep *record_tdep, + int wordsize) +{ + /* Simply return if it had been initialized. */ + if (record_tdep->size_pointer != 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. */ + + if (wordsize == 8) + { + 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; + } + else if (wordsize == 4) + { + 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; + } + else + 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; +} + +/* 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. */ + +const struct floatformat ** +ppc_floatformat_for_type (struct gdbarch *gdbarch, + const char *name, int len) +{ + if (len == 128 && name) + { + 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 default_floatformat_for_type (gdbarch, name, len); +} 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 +1739,18 @@ 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 +1789,7 @@ 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 +1803,6 @@ 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 +1841,7 @@ 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 +1854,11 @@ 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, @@ -1487,17 +1896,22 @@ ppc_linux_init_abi (struct gdbarch_info info, /* Cell/B.E. cross-architecture unwinder support. */ frame_unwind_prepend_unwinder (gdbarch, &ppu2spu_unwind); - /* 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); + /* We need to support more than "addr_bit" significant address bits + in order to support SPUADDR_ADDR encoded values. */ + set_gdbarch_significant_addr_bit (gdbarch, 64); } - set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type); -} + set_gdbarch_displaced_step_location (gdbarch, + linux_displaced_step_location); -/* Provide a prototype to silence -Wmissing-prototypes. */ -extern initialize_file_ftype _initialize_ppc_linux_tdep; + /* 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; + + ppc_init_linux_record_tdep (&ppc_linux_record_tdep, 4); + ppc_init_linux_record_tdep (&ppc64_linux_record_tdep, 8); +} void _initialize_ppc_linux_tdep (void) @@ -1511,13 +1925,10 @@ _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); + gdb::observers::inferior_created.attach (ppc_linux_spe_context_inferior_created); + gdb::observers::solib_loaded.attach (ppc_linux_spe_context_solib_loaded); + gdb::observers::solib_unloaded.attach (ppc_linux_spe_context_solib_unloaded); /* Initialize the Linux target descriptions. */ initialize_tdesc_powerpc_32l ();