/* Target-dependent code for Solaris x86.
- Copyright 2002, 2003 Free Software Foundation, Inc.
+
+ Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GDB.
#include "value.h"
#include "osabi.h"
+#include "gdb_string.h"
+
#include "i386-tdep.h"
+#include "solib-svr4.h"
+
+/* From <ia32/sys/reg.h>. */
+static int i386_sol2_gregset_reg_offset[] =
+{
+ 11 * 4, /* %eax */
+ 10 * 4, /* %ecx */
+ 9 * 4, /* %edx */
+ 8 * 4, /* %ebx */
+ 17 * 4, /* %esp */
+ 6 * 4, /* %ebp */
+ 5 * 4, /* %esi */
+ 4 * 4, /* %edi */
+ 14 * 4, /* %eip */
+ 16 * 4, /* %eflags */
+ 15 * 4, /* %cs */
+ 18 * 4, /* %ss */
+ 3 * 4, /* %ds */
+ 2 * 4, /* %es */
+ 1 * 4, /* %fs */
+ 0 * 4 /* %gs */
+};
+
+/* Return whether the frame preceding NEXT_FRAME corresponds to a
+ Solaris sigtramp routine. */
static int
-i386_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name)
+i386_sol2_sigtramp_p (struct frame_info *next_frame)
{
- /* Signal handler frames under Solaris 2 are recognized by a return
- address of 0xffffffff. */
- return (pc == 0xffffffff);
+ CORE_ADDR pc = frame_pc_unwind (next_frame);
+ char *name;
+
+ find_pc_partial_function (pc, &name, NULL, NULL);
+ return (name && (strcmp ("sigacthandler", name) == 0
+ || strcmp (name, "ucbsigvechandler") == 0));
+}
+
+/* Solaris doesn't have a `struct sigcontext', but it does have a
+ `mcontext_t' that contains the saved set of machine registers. */
+
+static CORE_ADDR
+i386_sol2_mcontext_addr (struct frame_info *next_frame)
+{
+ CORE_ADDR sp, ucontext_addr;
+
+ sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM);
+ ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4);
+
+ return ucontext_addr + 36;
}
/* Solaris 2. */
/* Solaris is SVR4-based. */
i386_svr4_init_abi (info, gdbarch);
- /* Signal trampolines are different from SVR4, in fact they're
- rather similar to BSD. */
- set_gdbarch_pc_in_sigtramp (gdbarch, i386_sol2_pc_in_sigtramp);
- tdep->sigcontext_addr = i386bsd_sigcontext_addr;
- tdep->sc_pc_offset = 36 + 14 * 4;
- tdep->sc_sp_offset = 36 + 17 * 4;
+ /* Solaris reserves space for its FPU emulator in `fpregset_t'.
+ There is also some space reserved for the registers of a Weitek
+ math coprocessor. */
+ tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset;
+ tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
+ tdep->sizeof_gregset = 19 * 4;
+ tdep->sizeof_fpregset = 380;
+
+ /* Signal trampolines are slightly different from SVR4. */
+ tdep->sigtramp_p = i386_sol2_sigtramp_p;
+ tdep->sigcontext_addr = i386_sol2_mcontext_addr;
+ tdep->sc_reg_offset = tdep->gregset_reg_offset;
+ tdep->sc_num_regs = tdep->gregset_num_regs;
+
+ set_solib_svr4_fetch_link_map_offsets
+ (gdbarch, svr4_ilp32_fetch_link_map_offsets);
}
\f