/* Target-dependent code for GNU/Linux UltraSPARC.
- Copyright (C) 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009
+ Free Software Foundation, Inc.
This file is part of GDB.
/* Signal trampoline support. */
static void sparc64_linux_sigframe_init (const struct tramp_frame *self,
- struct frame_info *next_frame,
+ struct frame_info *this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func);
static void
sparc64_linux_sigframe_init (const struct tramp_frame *self,
- struct frame_info *next_frame,
+ struct frame_info *this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
CORE_ADDR base, addr, sp_addr;
int regnum;
- base = frame_unwind_register_unsigned (next_frame, SPARC_O1_REGNUM);
+ base = get_frame_register_unsigned (this_frame, SPARC_O1_REGNUM);
base += 128;
/* Offsets from <bits/sigcontext.h>. */
trad_frame_set_reg_addr (this_cache, SPARC64_Y_REGNUM, addr + 24);
trad_frame_set_reg_addr (this_cache, SPARC64_FPRS_REGNUM, addr + 28);
- base = frame_unwind_register_unsigned (next_frame, SPARC_SP_REGNUM);
+ base = get_frame_register_unsigned (this_frame, SPARC_SP_REGNUM);
if (base & 1)
base += BIAS;
- addr = get_frame_memory_unsigned (next_frame, sp_addr, 8);
+ addr = get_frame_memory_unsigned (this_frame, sp_addr, 8);
if (addr & 1)
addr += BIAS;
{
if (insn == 0x91d0206d)
{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
ULONGEST sp = get_frame_register_unsigned (frame, SPARC_SP_REGNUM);
if (sp & 1)
sp += BIAS;
register save area. The saved PC sits at a 136 byte offset
into there. */
- return read_memory_unsigned_integer (sp + 192 + 128 + 136, 8);
+ return read_memory_unsigned_integer (sp + 192 + 128 + 136,
+ 8, byte_order);
}
return 0;
sparc64_collect_fpregset (regcache, regnum, fpregs);
}
+/* Set the program counter for process PTID to PC. */
+
+#define TSTATE_SYSCALL 0x0000000000000020ULL
+
+static void
+sparc64_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
+ ULONGEST state;
+
+ regcache_cooked_write_unsigned (regcache, tdep->pc_regnum, pc);
+ regcache_cooked_write_unsigned (regcache, tdep->npc_regnum, pc + 4);
+
+ /* Clear the "in syscall" bit to prevent the kernel from
+ messing with the PCs we just installed, if we happen to be
+ within an interrupted system call that the kernel wants to
+ restart.
+
+ Note that after we return from the dummy call, the TSTATE et al.
+ registers will be automatically restored, and the kernel
+ continues to restart the system call at this point. */
+ regcache_cooked_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
+ state &= ~TSTATE_SYSCALL;
+ regcache_cooked_write_unsigned (regcache, SPARC64_STATE_REGNUM, state);
+}
+
\f
static void
tramp_frame_prepend_unwinder (gdbarch, &sparc64_linux_rt_sigframe);
/* Hook in the DWARF CFI frame unwinder. */
- frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
+ dwarf2_append_unwinders (gdbarch);
sparc64_init_abi (info, gdbarch);
/* Make sure we can single-step over signal return system calls. */
tdep->step_trap = sparc64_linux_step_trap;
+
+ set_gdbarch_write_pc (gdbarch, sparc64_linux_write_pc);
}
\f