From 25de138b06f6cea850bfe352a6b3e00fbf60fd87 Mon Sep 17 00:00:00 2001 From: Jeff Law Date: Tue, 11 Feb 1997 19:31:29 +0000 Subject: * mn10200-tdep.c (mn10200_push_arguments): Stack only needs to be two byte aligned. Round argument sizes up to two byte boundary. Write out args in two byte hunks. (mn10200_push_return_address): Implement. * config/mn10200/tm-mn10200.h (EXTRACT_RETURN_VALUE): Abort for structures > 8 bytes (temporary). (STORE_RETURN_VALUE): Likewise. (CALL_DUMMY): No longer undefine. (USE_STRUCT_CONVENTION): Use for args > 8 bytes. (REG_STRUCT_HAS_ADDR): Define. Inferior function calls for the mn10200. --- gdb/mn10200-tdep.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'gdb/mn10200-tdep.c') diff --git a/gdb/mn10200-tdep.c b/gdb/mn10200-tdep.c index 11c03e9..8c3812d 100644 --- a/gdb/mn10200-tdep.c +++ b/gdb/mn10200-tdep.c @@ -530,15 +530,15 @@ mn10200_push_arguments (nargs, args, sp, struct_return, struct_addr) int stack_offset = 0; /* This should be a nop, but align the stack just in case something - went wrong. */ - sp &= ~3; + went wrong. Stacks are two byte aligned on the mn10200. */ + sp &= ~1; /* Now make space on the stack for the args. XXX This doesn't appear to handle pass-by-invisible reference arguments. */ for (argnum = 0; argnum < nargs; argnum++) - len += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3); + len += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 1) & ~1); /* Allocate stack space. */ sp -= len; @@ -567,11 +567,11 @@ mn10200_push_arguments (nargs, args, sp, struct_return, struct_addr) while (len > 0) { /* XXX This looks wrong; we can have one and two byte args. */ - write_memory (sp + stack_offset, val, 4); + write_memory (sp + stack_offset, val, 2); - len -= 4; - val += 4; - stack_offset += 4; + len -= 2; + val += 2; + stack_offset += 2; } args++; } @@ -588,8 +588,11 @@ mn10200_push_return_address (pc, sp) CORE_ADDR pc; CORE_ADDR sp; { + unsigned char buf[4]; - return sp; + store_unsigned_integer (buf, 4, CALL_DUMMY_ADDRESS ()); + write_memory (sp - 4, buf, 4); + return sp - 4; } /* Function: frame_saved_pc -- cgit v1.1