diff options
Diffstat (limited to 'gdb/sh-tdep.c')
| -rw-r--r-- | gdb/sh-tdep.c | 74 |
1 files changed, 68 insertions, 6 deletions
diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c index 74783bf..a632030 100644 --- a/gdb/sh-tdep.c +++ b/gdb/sh-tdep.c @@ -1,6 +1,6 @@ /* Target-dependent code for Hitachi Super-H, for GDB. - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 2000 Free Software - Foundation, Inc. + Copyright 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001 + Free Software Foundation, Inc. This file is part of GDB. @@ -59,6 +59,7 @@ static gdbarch_saved_pc_after_call_ftype sh_saved_pc_after_call; /* Function call related functions. */ static gdbarch_extract_return_value_ftype sh_extract_return_value; +static gdbarch_extract_return_value_ftype sh3e_sh4_extract_return_value; static gdbarch_extract_struct_value_address_ftype sh_extract_struct_value_address; static gdbarch_use_struct_convention_ftype sh_use_struct_convention; static gdbarch_store_struct_return_ftype sh_store_struct_return; @@ -1042,11 +1043,70 @@ static void sh_extract_return_value (struct type *type, char *regbuf, char *valbuf) { int len = TYPE_LENGTH (type); - + int return_register = R0_REGNUM; + int offset; + if (len <= 4) - memcpy (valbuf, ((char *) regbuf) + 4 - len, len); + { + if (TARGET_BYTE_ORDER == BIG_ENDIAN) + offset = REGISTER_BYTE (return_register) + 4 - len; + else + offset = REGISTER_BYTE (return_register); + memcpy (valbuf, regbuf + offset, len); + } else if (len <= 8) - memcpy (valbuf, ((char *) regbuf) + 8 - len, len); + { + if (TARGET_BYTE_ORDER == BIG_ENDIAN) + offset = REGISTER_BYTE (return_register) + 8 - len; + else + offset = REGISTER_BYTE (return_register); + memcpy (valbuf, regbuf + offset, len); + } + else + error ("bad size for return value"); +} + +static void +sh3e_sh4_extract_return_value (struct type *type, char *regbuf, char *valbuf) +{ + int return_register; + int offset; + int len = TYPE_LENGTH (type); + + if (TYPE_CODE (type) == TYPE_CODE_FLT) + return_register = FP0_REGNUM; + else + return_register = R0_REGNUM; + + if (len == 8 && TYPE_CODE (type) == TYPE_CODE_FLT) + { + DOUBLEST val; + if (TARGET_BYTE_ORDER == LITTLE_ENDIAN) + floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, + (char *) regbuf + REGISTER_BYTE (return_register), + &val); + else + floatformat_to_doublest (&floatformat_ieee_double_big, + (char *) regbuf + REGISTER_BYTE (return_register), + &val); + store_floating (valbuf, len, val); + } + else if (len <= 4) + { + if (TARGET_BYTE_ORDER == BIG_ENDIAN) + offset = REGISTER_BYTE (return_register) + 4 - len; + else + offset = REGISTER_BYTE (return_register); + memcpy (valbuf, regbuf + offset, len); + } + else if (len <= 8) + { + if (TARGET_BYTE_ORDER == BIG_ENDIAN) + offset = REGISTER_BYTE (return_register) + 8 - len; + else + offset = REGISTER_BYTE (return_register); + memcpy (valbuf, regbuf + offset, len); + } else error ("bad size for return value"); } @@ -1917,6 +1977,7 @@ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_store_pseudo_register (gdbarch, sh_store_pseudo_register); set_gdbarch_do_registers_info (gdbarch, sh_do_registers_info); set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc); + set_gdbarch_extract_return_value (gdbarch, sh_extract_return_value); print_sh_insn = gdb_print_insn_sh; switch (info.bfd_arch_info->mach) @@ -1982,6 +2043,7 @@ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) sh_show_regs = sh3e_show_regs; sh_store_return_value = sh3e_sh4_store_return_value; sh_register_virtual_type = sh_sh3e_register_virtual_type; + set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value); set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); set_gdbarch_register_raw_size (gdbarch, sh_default_register_raw_size); set_gdbarch_register_virtual_size (gdbarch, sh_default_register_raw_size); @@ -2024,6 +2086,7 @@ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) sh_show_regs = sh4_show_regs; sh_store_return_value = sh3e_sh4_store_return_value; sh_register_virtual_type = sh_sh4_register_virtual_type; + set_gdbarch_extract_return_value (gdbarch, sh3e_sh4_extract_return_value); set_gdbarch_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs); set_gdbarch_fp0_regnum (gdbarch, 25); set_gdbarch_register_raw_size (gdbarch, sh_sh4_register_raw_size); @@ -2092,7 +2155,6 @@ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_coerce_float_to_double (gdbarch, sh_coerce_float_to_double); - set_gdbarch_extract_return_value (gdbarch, sh_extract_return_value); set_gdbarch_push_arguments (gdbarch, sh_push_arguments); set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame); set_gdbarch_push_return_address (gdbarch, sh_push_return_address); |