From 220d204bf8991b718aa3e35e74c2965e1811a9a2 Mon Sep 17 00:00:00 2001 From: jason Date: Thu, 23 Mar 2000 00:29:55 +0000 Subject: Implement dwarf2 exception handling for the ARM. * config/arm/arm.h (INCOMING_RETURN_ADDR_RTX): Define. (DWARF_FRAME_RETURN_COLUMN): Define. * config/arm/arm.c (emit_multi_reg_push): Return rtx. Attach REG_FRAME_RELATED_EXPR note. (emit_sfm): Likewise. (arm_expand_prologue): Set RTX_FRAME_RELATED_P on everything. * dwarf2out.c (reg_save): Handle saving a register to itself. (dwarf2out_frame_debug_expr): Handle an intermediate cfa reg. * except.c (eh_regs): Don't use the static chain reg if it's callee-saved. * frame.h (frame_state): Add cfa_saved field. * frame.c (execute_cfa_insn): Set it. * libgcc2.c (throw_helper): Don't adjust sp if it's restored in the epilogue. * function.c (ARG_POINTER_CFA_OFFSET): Default to FIRST_PARM_OFFSET. Now takes a parm. (instantiate_virtual_regs): Adjust. * tm.texi: Adjust. * config/m68k/m68k.h (ARG_POINTER_CFA_OFFSET): Don't define. * config/ns32k/ns32k.h (ARG_POINTER_CFA_OFFSET): Don't define. * config/sparc/sparc.h (ARG_POINTER_CFA_OFFSET): Take a parm. * dwarf2out.c (reg_number): Refer to FIRST_PSEUDO_REGISTER. (initial_return_save): Use DWARF_FRAME_REGNUM, not reg_number. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32696 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/function.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'gcc/function.c') diff --git a/gcc/function.c b/gcc/function.c index 3308dbba564..ae04a5c6044 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -2760,10 +2760,10 @@ static int cfa_offset; #endif #endif -/* On a few machines, the CFA coincides with the arg pointer. */ +/* On most machines, the CFA coincides with the first incoming parm. */ #ifndef ARG_POINTER_CFA_OFFSET -#define ARG_POINTER_CFA_OFFSET 0 +#define ARG_POINTER_CFA_OFFSET(FNDECL) FIRST_PARM_OFFSET (FNDECL) #endif @@ -3335,7 +3335,7 @@ instantiate_virtual_regs (fndecl, insns) var_offset = STARTING_FRAME_OFFSET; dynamic_offset = STACK_DYNAMIC_OFFSET (fndecl); out_arg_offset = STACK_POINTER_OFFSET; - cfa_offset = ARG_POINTER_CFA_OFFSET; + cfa_offset = ARG_POINTER_CFA_OFFSET (fndecl); /* Scan all variables and parameters of this function. For each that is in memory, instantiate all virtual registers if the result is a valid -- cgit v1.2.3