return 6;
}
-/* Worker function for TARGET_ASM_TRAMPOLINE_TEMPLATE. */
-
-static void
-mn10300_asm_trampoline_template (FILE *f)
-{
- fprintf (f, "\tadd -4,sp\n");
- fprintf (f, "\t.long 0x0004fffa\n");
- fprintf (f, "\tmov (0,sp),a0\n");
- fprintf (f, "\tadd 4,sp\n");
- fprintf (f, "\tmov (13,a0),a1\n");
- fprintf (f, "\tmov (17,a0),a0\n");
- fprintf (f, "\tjmp (a0)\n");
- fprintf (f, "\t.long 0\n");
- fprintf (f, "\t.long 0\n");
-}
-
/* Worker function for TARGET_TRAMPOLINE_INIT. */
static void
mn10300_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value)
{
- rtx fnaddr = XEXP (DECL_RTL (fndecl), 0);
- rtx mem;
+ rtx mem, disp, fnaddr = XEXP (DECL_RTL (fndecl), 0);
+
+ /* This is a strict alignment target, which means that we play
+ some games to make sure that the locations at which we need
+ to store <chain> and <disp> wind up at aligned addresses.
+
+ 0x28 0x00 add 0,d0
+ 0xfc 0xdd mov chain,a1
+ <chain>
+ 0xf8 0xed 0x00 btst 0,d1
+ 0xdc jmp fnaddr
+ <disp>
+
+ Note that the two extra insns are effectively nops; they
+ clobber the flags but do not affect the contents of D0 or D1. */
- emit_block_move (m_tramp, assemble_trampoline_template (),
- GEN_INT (TRAMPOLINE_SIZE), BLOCK_OP_NORMAL);
+ disp = expand_binop (SImode, sub_optab, fnaddr,
+ plus_constant (XEXP (m_tramp, 0), 11),
+ NULL_RTX, 1, OPTAB_DIRECT);
- mem = adjust_address (m_tramp, SImode, 0x14);
+ mem = adjust_address (m_tramp, SImode, 0);
+ emit_move_insn (mem, gen_int_mode (0xddfc0028, SImode));
+ mem = adjust_address (m_tramp, SImode, 4);
emit_move_insn (mem, chain_value);
- mem = adjust_address (m_tramp, SImode, 0x18);
- emit_move_insn (mem, fnaddr);
+ mem = adjust_address (m_tramp, SImode, 8);
+ emit_move_insn (mem, gen_int_mode (0xdc00edf8, SImode));
+ mem = adjust_address (m_tramp, SImode, 12);
+ emit_move_insn (mem, disp);
}
/* Output the assembler code for a C++ thunk function.
#undef TARGET_PREFERRED_OUTPUT_RELOAD_CLASS
#define TARGET_PREFERRED_OUTPUT_RELOAD_CLASS mn10300_preferred_output_reload_class
-#undef TARGET_ASM_TRAMPOLINE_TEMPLATE
-#define TARGET_ASM_TRAMPOLINE_TEMPLATE mn10300_asm_trampoline_template
#undef TARGET_TRAMPOLINE_INIT
#define TARGET_TRAMPOLINE_INIT mn10300_trampoline_init