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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-09-12 18:33:32 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-09-12 18:33:32 -0400 |
| commit | c83926886affae3b73de6f080cc3c76b77e37c55 (patch) | |
| tree | 0e4493d79a16873cb9ef632a659ca5dc604572cf /gcc | |
| parent | aa76a77e6ca2bc0056b236c80f65e44c2eedd96f (diff) | |
| download | gcc-c83926886affae3b73de6f080cc3c76b77e37c55.zip gcc-c83926886affae3b73de6f080cc3c76b77e37c55.tar.gz gcc-c83926886affae3b73de6f080cc3c76b77e37c55.tar.bz2 | |
(STATIC_CHAIN_REGNUM): Use %g5 for sparc64.
(TRAMPOLINE_TEMPLATE): Rewrite for sparc64.
(TRAMPOLINE_SIZE): Is 40 for sparc64.
From-SVN: r10341
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/sparc/sparc.h | 53 |
1 files changed, 39 insertions, 14 deletions
diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h index df92803..eb9be07 100644 --- a/gcc/config/sparc/sparc.h +++ b/gcc/config/sparc/sparc.h @@ -747,9 +747,8 @@ extern int sparc_mode_class[]; #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM /* Register in which static-chain is passed to a function. This must - not be a register used by the prologue. - ??? v9: Since %g2 is reserved but %g5 is available, perhaps use %g5. */ -#define STATIC_CHAIN_REGNUM 2 + not be a register used by the prologue. */ +#define STATIC_CHAIN_REGNUM (TARGET_V9 ? 5 : 2) /* Register which holds offset table for position-independent data references. */ @@ -1617,24 +1616,50 @@ extern union tree_node *current_function_decl; /* Output assembler code for a block containing the constant parts of a trampoline, leaving space for the variable parts. */ -/* On the sparc, the trampoline contains five instructions: +/* On 32 bit sparcs, the trampoline contains five instructions: sethi #TOP_OF_FUNCTION,%g1 or #BOTTOM_OF_FUNCTION,%g1,%g1 sethi #TOP_OF_STATIC,%g2 jmp g1 - or #BOTTOM_OF_STATIC,%g2,%g2 */ -#define TRAMPOLINE_TEMPLATE(FILE) \ -{ \ - ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000)); \ - ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000)); \ - ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000)); \ - ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x81C04000)); \ - ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000)); \ -} + or #BOTTOM_OF_STATIC,%g2,%g2 + + On 64 bit sparcs, the trampoline contains 4 insns and two pseudo-immediate + constants (plus some padding): + rd %pc,%g1 + ldx[%g1+20],%g5 + ldx[%g1+28],%g1 + jmp %g1 + nop + nop + .xword context + .xword function */ + +#define TRAMPOLINE_TEMPLATE(FILE) \ +do { \ + if (TARGET_V9) \ + { \ + fprintf (FILE, "\trd %%pc,%%g1\n"); \ + fprintf (FILE, "\tldx [%%g1+24],%%g5\n"); \ + fprintf (FILE, "\tldx [%%g1+32],%%g1\n"); \ + fprintf (FILE, "\tjmp %%g1\n"); \ + fprintf (FILE, "\tnop\n"); \ + fprintf (FILE, "\tnop\n"); \ + /* -mmedlow shouldn't generate .xwords, so don't use them at all */ \ + fprintf (FILE, "\t.word 0,0,0,0\n"); \ + } \ + else \ + { \ + ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000)); \ + ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000)); \ + ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000)); \ + ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x81C04000)); \ + ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000)); \ + } \ +} while (0) /* Length in units of the trampoline for entering a nested function. */ -#define TRAMPOLINE_SIZE 20 +#define TRAMPOLINE_SIZE (TARGET_V9 ? 40 : 20) /* Emit RTL insns to initialize the variable parts of a trampoline. FNADDR is an RTX for the address of the function's pure code. |