gdb/gdbserver/
* Makefile.in (clean): Remove reg-mips64.c. (reg-mips64.c, reg-mips64.o): New rules. * configure.srv: Handle mips64. Include regset support for mips. * linux-mips-low.c (union mips_register): New. (mips_get_pc, mips_set_pc, mips_reinsert_addr): Use it. (mips_breakpoint, mips_breakpoint_at): Use int. (mips_collect_register, mips_supply_register) (mips_collect_register_32bit, mips_supply_register_32bit) (mips_fill_gregset, mips_store_gregset, mips_fill_fpregset) (mips_store_fpregset, target_regsets): New. * thread-db.c (thread_db_get_tls_address): Use uintptr_t. gdb/ * regformats/reg-mips64.dat: New file.
This commit is contained in:
Daniel Jacobowitz
parent
29709017e8
commit
186947f7ca
7 changed files with 323 additions and 14 deletions
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@ -23,6 +23,7 @@
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#include "linux-low.h"
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#include <sys/ptrace.h>
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#include <endian.h>
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#include "gdb_proc_service.h"
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@ -38,6 +39,15 @@
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#include <asm/ptrace.h>
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union mips_register
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{
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unsigned char buf[8];
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/* Deliberately signed, for proper sign extension. */
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int reg32;
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long long reg64;
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};
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/* Return the ptrace ``address'' of register REGNO. */
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/* Matches mips_generic32_regs */
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@ -107,20 +117,25 @@ mips_cannot_store_register (int regno)
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static CORE_ADDR
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mips_get_pc ()
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{
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unsigned long pc;
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collect_register_by_name ("pc", &pc);
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return pc;
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union mips_register pc;
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collect_register_by_name ("pc", pc.buf);
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return register_size (0) == 4 ? pc.reg32 : pc.reg64;
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}
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static void
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mips_set_pc (CORE_ADDR pc)
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{
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unsigned long newpc = pc;
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supply_register_by_name ("pc", &newpc);
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union mips_register newpc;
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if (register_size (0) == 4)
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newpc.reg32 = pc;
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else
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newpc.reg64 = pc;
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supply_register_by_name ("pc", newpc.buf);
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}
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/* Correct in either endianness. */
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static const unsigned long mips_breakpoint = 0x0005000d;
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static const unsigned int mips_breakpoint = 0x0005000d;
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#define mips_breakpoint_len 4
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/* We only place breakpoints in empty marker functions, and thread locking
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@ -129,15 +144,15 @@ static const unsigned long mips_breakpoint = 0x0005000d;
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static CORE_ADDR
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mips_reinsert_addr ()
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{
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unsigned long pc;
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collect_register_by_name ("ra", &pc);
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return pc;
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union mips_register ra;
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collect_register_by_name ("ra", ra.buf);
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return register_size (0) == 4 ? ra.reg32 : ra.reg64;
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}
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static int
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mips_breakpoint_at (CORE_ADDR where)
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{
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unsigned long insn;
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unsigned int insn;
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(*the_target->read_memory) (where, (unsigned char *) &insn, 4);
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if (insn == mips_breakpoint)
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@ -165,6 +180,155 @@ ps_get_thread_area (const struct ps_prochandle *ph,
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return PS_OK;
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}
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#ifdef HAVE_PTRACE_GETREGS
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static void
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mips_collect_register (int use_64bit, int regno, union mips_register *reg)
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{
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union mips_register tmp_reg;
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if (use_64bit)
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{
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collect_register (regno, &tmp_reg.reg64);
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*reg = tmp_reg;
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}
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else
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{
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collect_register (regno, &tmp_reg.reg32);
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reg->reg64 = tmp_reg.reg32;
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}
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}
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static void
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mips_supply_register (int use_64bit, int regno, const union mips_register *reg)
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{
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int offset = 0;
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/* For big-endian 32-bit targets, ignore the high four bytes of each
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eight-byte slot. */
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if (__BYTE_ORDER == __BIG_ENDIAN && !use_64bit)
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offset = 4;
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supply_register (regno, reg->buf + offset);
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}
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static void
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mips_collect_register_32bit (int use_64bit, int regno, unsigned char *buf)
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{
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union mips_register tmp_reg;
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int reg32;
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mips_collect_register (use_64bit, regno, &tmp_reg);
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reg32 = tmp_reg.reg64;
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memcpy (buf, ®32, 4);
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}
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static void
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mips_supply_register_32bit (int use_64bit, int regno, const unsigned char *buf)
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{
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union mips_register tmp_reg;
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int reg32;
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memcpy (®32, buf, 4);
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tmp_reg.reg64 = reg32;
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mips_supply_register (use_64bit, regno, &tmp_reg);
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}
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static void
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mips_fill_gregset (void *buf)
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{
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union mips_register *regset = buf;
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int i, use_64bit;
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use_64bit = (register_size (0) == 8);
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for (i = 0; i < 32; i++)
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mips_collect_register (use_64bit, i, regset + i);
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mips_collect_register (use_64bit, find_regno ("lo"), regset + 32);
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mips_collect_register (use_64bit, find_regno ("hi"), regset + 33);
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mips_collect_register (use_64bit, find_regno ("pc"), regset + 34);
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mips_collect_register (use_64bit, find_regno ("bad"), regset + 35);
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mips_collect_register (use_64bit, find_regno ("sr"), regset + 36);
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mips_collect_register (use_64bit, find_regno ("cause"), regset + 37);
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}
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static void
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mips_store_gregset (const void *buf)
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{
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const union mips_register *regset = buf;
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int i, use_64bit;
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use_64bit = (register_size (0) == 8);
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for (i = 0; i < 32; i++)
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mips_supply_register (use_64bit, i, regset + i);
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mips_supply_register (use_64bit, find_regno ("lo"), regset + 32);
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mips_supply_register (use_64bit, find_regno ("hi"), regset + 33);
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mips_supply_register (use_64bit, find_regno ("pc"), regset + 34);
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mips_supply_register (use_64bit, find_regno ("bad"), regset + 35);
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mips_supply_register (use_64bit, find_regno ("sr"), regset + 36);
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mips_supply_register (use_64bit, find_regno ("cause"), regset + 37);
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}
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static void
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mips_fill_fpregset (void *buf)
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{
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union mips_register *regset = buf;
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int i, use_64bit, first_fp, big_endian;
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use_64bit = (register_size (0) == 8);
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first_fp = find_regno ("f0");
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big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
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/* See GDB for a discussion of this peculiar layout. */
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for (i = 0; i < 32; i++)
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if (use_64bit)
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collect_register (first_fp + i, regset[i].buf);
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else
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collect_register (first_fp + i,
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regset[i & ~1].buf + 4 * (big_endian != (i & 1)));
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mips_collect_register_32bit (use_64bit, find_regno ("fsr"), regset[32].buf);
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mips_collect_register_32bit (use_64bit, find_regno ("fir"),
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regset[32].buf + 4);
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}
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static void
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mips_store_fpregset (const void *buf)
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{
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const union mips_register *regset = buf;
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int i, use_64bit, first_fp, big_endian;
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use_64bit = (register_size (0) == 8);
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first_fp = find_regno ("f0");
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big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
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/* See GDB for a discussion of this peculiar layout. */
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for (i = 0; i < 32; i++)
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if (use_64bit)
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supply_register (first_fp + i, regset[i].buf);
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else
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supply_register (first_fp + i,
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regset[i & ~1].buf + 4 * (big_endian != (i & 1)));
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mips_supply_register_32bit (use_64bit, find_regno ("fsr"), regset[32].buf);
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mips_supply_register_32bit (use_64bit, find_regno ("fir"),
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regset[32].buf + 4);
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}
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#endif /* HAVE_PTRACE_GETREGS */
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struct regset_info target_regsets[] = {
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#ifdef HAVE_PTRACE_GETREGS
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{ PTRACE_GETREGS, PTRACE_SETREGS, 38 * 8, GENERAL_REGS,
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mips_fill_gregset, mips_store_gregset },
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{ PTRACE_GETFPREGS, PTRACE_SETFPREGS, 33 * 8, FP_REGS,
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mips_fill_fpregset, mips_store_fpregset },
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#endif /* HAVE_PTRACE_GETREGS */
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{ 0, 0, -1, -1, NULL, NULL }
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};
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struct linux_target_ops the_low_target = {
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mips_num_regs,
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mips_regmap,
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