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| author | J"orn Rennecke <amylaar@cygnus.co.uk> | 2000-04-06 19:43:12 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2000-04-06 20:43:12 +0100 |
| commit | 9b4f640b5deb54d0634e507267ef429e99934a1c (patch) | |
| tree | 47938717eaab444e6fd39d61075bf399724ef43c | |
| parent | 2f6f4b96518a3e2e911acb32d2ceb48fba761686 (diff) | |
| download | gcc-9b4f640b5deb54d0634e507267ef429e99934a1c.zip gcc-9b4f640b5deb54d0634e507267ef429e99934a1c.tar.gz gcc-9b4f640b5deb54d0634e507267ef429e99934a1c.tar.bz2 | |
* sh.h (STRUCT_VALUE, RETURN_IN_MEMORY): Define.
From-SVN: r32977
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/sh/sh.h | 20 |
2 files changed, 23 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9d4000f..b4aabb4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +Thu Apr 6 20:39:26 2000 J"orn Rennecke <amylaar@cygnus.co.uk> + + * sh.h (STRUCT_VALUE, RETURN_IN_MEMORY): Define. + Thu Apr 6 19:34:08 2000 J"orn Rennecke <amylaar@cygnus.co.uk> * config/sh/lib1funcs.asm (___udivsi3_i4): diff --git a/gcc/config/sh/sh.h b/gcc/config/sh/sh.h index 9e1eba2..efeab0a 100644 --- a/gcc/config/sh/sh.h +++ b/gcc/config/sh/sh.h @@ -592,7 +592,25 @@ do { \ where the address is passed. If it returns 0, the address is passed as an "invisible" first argument. */ -/*#define STRUCT_VALUE ((rtx)0)*/ +/* The Hitachi calling convention doesn't quite fit into this scheme since + the address is passed like an invisible argument, but one that is always + passed in memory. We approximate this by saying where the pointer is; + however, this will put any actual arguments that are passed in memory + in the wrong place. + If we wanted to implement this exactly, we'd need a STRUCT_VALUE of 0, + an extra field in CUMULATIVE_ARGS, initialize it in INIT_CUMULATIVE_ARGS, + and hack FUNCTION_VALUE / FUNCTION_ARG_ADVANCE to look directly at + DECL_RESULT of the current function in conjunction with CUM to determine + if the argument in question it is a struct value pointer, and if it is, + pass it in memory. */ +#define STRUCT_VALUE \ + (TARGET_HITACHI \ + ? gen_rtx_MEM (Pmode, arg_pointer_rtx) \ + : gen_rtx_REG (Pmode, STRUCT_VALUE_REGNUM)) + +#define RETURN_IN_MEMORY(TYPE) \ + (TYPE_MODE (TYPE) == BLKmode \ + || TARGET_HITACHI && TREE_CODE (TYPE) == RECORD_TYPE) /* Don't default to pcc-struct-return, because we have already specified exactly how to return structures in the RETURN_IN_MEMORY macro. */ |