diff options
Diffstat (limited to 'gcc/config/fr30/fr30.c')
| -rw-r--r-- | gcc/config/fr30/fr30.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gcc/config/fr30/fr30.c b/gcc/config/fr30/fr30.c index 431af8f63f9..faa637cddec 100644 --- a/gcc/config/fr30/fr30.c +++ b/gcc/config/fr30/fr30.c @@ -121,6 +121,8 @@ static int fr30_arg_partial_bytes (CUMULATIVE_ARGS *, enum machine_mode, tree, bool); static bool fr30_frame_pointer_required (void); static bool fr30_can_eliminate (const int, const int); +static void fr30_asm_trampoline_template (FILE *); +static void fr30_trampoline_init (rtx, tree, rtx); #define FRAME_POINTER_MASK (1 << (FRAME_POINTER_REGNUM)) #define RETURN_POINTER_MASK (1 << (RETURN_POINTER_REGNUM)) @@ -165,6 +167,11 @@ static bool fr30_can_eliminate (const int, const int); #undef TARGET_CAN_ELIMINATE #define TARGET_CAN_ELIMINATE fr30_can_eliminate +#undef TARGET_ASM_TRAMPOLINE_TEMPLATE +#define TARGET_ASM_TRAMPOLINE_TEMPLATE fr30_asm_trampoline_template +#undef TARGET_TRAMPOLINE_INIT +#define TARGET_TRAMPOLINE_INIT fr30_trampoline_init + struct gcc_target targetm = TARGET_INITIALIZER; @@ -924,6 +931,50 @@ fr30_frame_pointer_required (void) } /*}}}*/ +/*{{{ Trampoline Output Routines */ + +/* Implement TARGET_ASM_TRAMPOLINE_TEMPLATE. + On the FR30, the trampoline is: + + nop + ldi:32 STATIC, r12 + nop + ldi:32 FUNCTION, r0 + jmp @r0 + + The no-ops are to guarantee that the static chain and final + target are 32 bit aligned within the trampoline. That allows us to + initialize those locations with simple SImode stores. The alternative + would be to use HImode stores. */ + +static void +fr30_asm_trampoline_template (FILE *f) +{ + fprintf (f, "\tnop\n"); + fprintf (f, "\tldi:32\t#0, %s\n", reg_names [STATIC_CHAIN_REGNUM]); + fprintf (f, "\tnop\n"); + fprintf (f, "\tldi:32\t#0, %s\n", reg_names [COMPILER_SCRATCH_REGISTER]); + fprintf (f, "\tjmp\t@%s\n", reg_names [COMPILER_SCRATCH_REGISTER]); +} + +/* Implement TARGET_TRAMPOLINE_INIT. */ + +static void +fr30_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value) +{ + rtx fnaddr = XEXP (DECL_RTL (fndecl), 0); + rtx mem; + + emit_block_move (m_tramp, assemble_trampoline_template (), + GEN_INT (TRAMPOLINE_SIZE), BLOCK_OP_NORMAL); + + mem = adjust_address (m_tramp, SImode, 4); + emit_move_insn (mem, chain_value); + mem = adjust_address (m_tramp, SImode, 12); + emit_move_insn (mem, fnaddr); +} + +/*}}}*/ /* Local Variables: */ /* folded-file: t */ /* End: */ |