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| author | Jim Wilson <wilson@gcc.gnu.org> | 1992-04-07 21:51:39 -0700 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1992-04-07 21:51:39 -0700 |
| commit | 0be8e85950ca7f3732cbfa67271fc4b8ff56c418 (patch) | |
| tree | e36d99a84fc0b8aa4a10f5ac31209199024aea27 /gcc | |
| parent | b82fb2631beb78bef09e7aefb3d7821a5816f97c (diff) | |
| download | gcc-0be8e85950ca7f3732cbfa67271fc4b8ff56c418.zip gcc-0be8e85950ca7f3732cbfa67271fc4b8ff56c418.tar.gz gcc-0be8e85950ca7f3732cbfa67271fc4b8ff56c418.tar.bz2 | |
*** empty log message ***
From-SVN: r707
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/sparc/sparc.h | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h index 42e6520..b997b4a 100644 --- a/gcc/config/sparc/sparc.h +++ b/gcc/config/sparc/sparc.h @@ -88,7 +88,11 @@ extern int target_flags; Like -dalign in Sun cc. */ #define TARGET_HOPE_ALIGN (target_flags & 16) -/* Nonzero means that make sure all doubles are on 8-byte boundaries. */ +/* Nonzero means make sure all doubles are on 8-byte boundaries. + This option results in a calling convention that is incompatible with + every other sparc compiler in the world, and thus should only ever be + used for experimenting. Also, varargs won't work with it, but it doesn't + seem worth trying to fix. */ #define TARGET_FORCE_ALIGN (target_flags & 32) /* Macro to define tables used to set the flags. @@ -559,14 +563,11 @@ extern char leaf_reg_backmap[]; /* Offset of first parameter from the argument pointer register value. This is 64 for the ins and locals, plus 4 for the struct-return reg - even if this function isn't going to use it. */ -#define FIRST_PARM_OFFSET(FNDECL) (STRUCT_VALUE_OFFSET + UNITS_PER_WORD) - -/* Offset from top-of-stack address to location to store the - function parameter if it can't go in a register. - Addresses for following parameters are computed relative to this one. */ -#define FIRST_PARM_CALLER_OFFSET(FNDECL) \ - (STRUCT_VALUE_OFFSET + UNITS_PER_WORD - STACK_POINTER_OFFSET) + even if this function isn't going to use it. + If TARGET_FORCE_ALIGN, we must reserve 4 more bytes to ensure that the + stack remains aligned. */ +#define FIRST_PARM_OFFSET(FNDECL) \ + (STRUCT_VALUE_OFFSET + UNITS_PER_WORD + (TARGET_FORCE_ALIGN ? 4 : 0)) /* When a parameter is passed in a register, stack space is still allocated for it. */ |