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(RAP_REG, RETURN_ADDRESS_POINTER_REGNUM): Define. 

(ELIMINABLE_REGS): Add RETURN_ADDRESS_POINTER_REGNUM support.
(RETURN_ADDR_RTX): Define.
(REGISTER_NAMES): Add rap.

From-SVN: r12628
This commit is contained in:
Jim Wilson 1996-08-12 14:44:14 -07:00
parent 2afeea0fa3
commit d1405d8907
1 changed files with 23 additions and 6 deletions
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29
gcc/config/sh/sh.h
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@ -267,6 +267,7 @@ do { \
mach multiply/accumulate result, high part
macl multiply/accumulate result, low part.
fpul fp/int communication register
rap return address pointer register
fr0 fp arg return
fr1..fr3 scratch floating point registers
fr4..fr11 fp args in
@ -286,7 +287,7 @@ do { \
#define MACL_REG 21
#define SPECIAL_REG(REGNO) ((REGNO) >= 18 && (REGNO) <= 21)
#define FPUL_REG 22
/* Number 23 is unused. Reserved for future expansion. */
#define RAP_REG 23
#define FIRST_FP_REG 24
#define LAST_FP_REG 39
@ -372,6 +373,10 @@ do { \
/* Base register for access to local variables of the function. */
#define FRAME_POINTER_REGNUM 14
/* Fake register that holds the address on the stack of the
current function's return address. */
#define RETURN_ADDRESS_POINTER_REGNUM 23
/* Value should be nonzero if functions must have frame pointers.
Zero means the frame pointer need not be set up (and parms may be accessed
via the stack pointer) in functions that seem suitable. */
@ -390,10 +395,12 @@ do { \
followed by "to". Eliminations of the same "from" register are listed
in order of preference. */
#define ELIMINABLE_REGS \
{{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},}
#define ELIMINABLE_REGS \
{{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ RETURN_ADDRESS_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},}
/* Given FROM and TO register numbers, say whether this elimination
is allowed. */
@ -846,6 +853,16 @@ extern int current_function_anonymous_args;
emit_move_insn (gen_rtx (MEM, SImode, plus_constant ((TRAMP), 12)), \
(FNADDR)); \
}
/* A C expression whose value is RTL representing the value of the return
address for the frame COUNT steps up from the current frame.
FRAMEADDR is already the frame pointer of the COUNT frame, so we
can ignore COUNT. */
#define RETURN_ADDR_RTX(COUNT, FRAME) \
((COUNT == 0) \
? gen_rtx (MEM, Pmode, gen_rtx (REG, Pmode, RETURN_ADDRESS_POINTER_REGNUM)) \
: (rtx) 0)
/* Generate necessary RTL for __builtin_saveregs().
ARGLIST is the argument list; see expr.c. */
@ -1333,7 +1350,7 @@ dtors_section() \
{ \
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
"ap", "pr", "t", "gbr", "mach","macl", "fpul", "X", \
"ap", "pr", "t", "gbr", "mach","macl", "fpul","rap", \
"fr0","fr1","fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \
"fr8","fr9","fr10","fr11","fr12","fr13","fr14","fr15",\
}