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Tue Nov 12 12:16:40 1996 Michael Snyder <msnyder@cleaver.cygnus.com>

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* sh-tdep.c: Add functionality for target function calls.
        * config/sh/tm-sh.h: Add support for target function calls.
This is a safety check-in: everything works, and there'll be another
clean-up round shortly.
This commit is contained in:
Michael Snyder
1996-11-12 20:19:17 +00:00
parent 6f3eea2bdf
commit 69992fc816
3 changed files with 521 additions and 44 deletions
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86
gdb/config/sh/tm-sh.h
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@@ -19,6 +19,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Contributed by Steve Chamberlain sac@cygnus.com */
#ifdef __STDC__
struct frame_info;
struct frame_saved_regs;
struct value;
struct type;
#endif
#define GDB_TARGET_IS_SH
#define IEEE_FLOAT 1
@@ -109,13 +116,13 @@ extern CORE_ADDR sh_skip_prologue ();
Entries beyond the first NUM_REGS are ignored. */
#define REGISTER_NAMES \
{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
"pc", "pr", "gbr", "vbr", "mach", "macl", "sr", \
{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
"pc", "pr", "gbr", "vbr", "mach", "macl", "sr", \
"fpul", "fpscr", \
"fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \
"fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \
"ssr", "spc", \
"ssr", "spc", \
"r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0", \
"r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1", \
}
@@ -130,6 +137,9 @@ extern CORE_ADDR sh_skip_prologue ();
passed to read_register. */
#define R0_REGNUM 0
#define STRUCT_RETURN_REGNUM 2
#define ARG0_REGNUM 4
#define ARGLAST_REGNUM 7
#define FP_REGNUM 14
#define SP_REGNUM 15
#define PC_REGNUM 16
@@ -152,25 +162,28 @@ extern CORE_ADDR sh_skip_prologue ();
/* Store the address of the place in which to copy the structure the
subroutine will return. This is called from call_function.
We store structs through a pointer passed in R4 */
We store structs through a pointer passed in R0 */
#define STORE_STRUCT_RETURN(ADDR, SP) \
{ write_register (4, (ADDR)); }
{ write_register (STRUCT_RETURN_REGNUM, (ADDR)); }
#define USE_STRUCT_CONVENTION(gcc_p, type) (TYPE_LENGTH(type) > 1)
/* Extract from an array REGBUF containing the (raw) register state
a function return value of type TYPE, and copy that, in virtual format,
into VALBUF. */
extern void sh_extract_return_value PARAMS ((struct type *, void *, void *));
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
memcpy (VALBUF, (char *)(REGBUF), TYPE_LENGTH(TYPE))
sh_extract_return_value (TYPE, REGBUF, VALBUF)
/* Write into appropriate registers a function return value
of type TYPE, given in virtual format.
Things always get returned in R4/R5 */
Things always get returned in R0/R1 */
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
write_register_bytes (REGISTER_BYTE(4), VALBUF, TYPE_LENGTH (TYPE))
write_register_bytes (REGISTER_BYTE(0), VALBUF, TYPE_LENGTH (TYPE))
/* Extract from an array REGBUF containing the (raw) register state
the address in which a function should return its structure value,
@@ -189,7 +202,7 @@ extern CORE_ADDR sh_skip_prologue ();
int f_offset;
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
init_extra_frame_info(fromleaf, fi)
sh_init_extra_frame_info(fromleaf, fi)
/* A macro that tells us whether the function invocation represented
by FI does not have a frame on the stack associated with it. If it
@@ -198,10 +211,9 @@ extern CORE_ADDR sh_skip_prologue ();
#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
(FRAMELESS) = frameless_look_for_prologue(FI)
#define FRAME_CHAIN(FRAME) sh_frame_chain(FRAME)
#define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc)
#define FRAME_ARGS_ADDRESS(fi) (fi)->frame
#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
#define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc)
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
/* Set VAL to the number of args passed to frame described by FI.
Can set VAL to -1, meaning no way to tell. */
@@ -214,6 +226,9 @@ extern CORE_ADDR sh_skip_prologue ();
#define FRAME_ARGS_SKIP 0
extern void sh_frame_find_saved_regs PARAMS ((struct frame_info *fi,
struct frame_saved_regs *fsr));
/* Put here the code to store, into a struct frame_saved_regs,
the addresses of the saved registers of frame described by FRAME_INFO.
This includes special registers such as pc and fp saved in special
@@ -221,20 +236,57 @@ extern CORE_ADDR sh_skip_prologue ();
the address we return for it IS the sp for the next frame. */
#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
frame_find_saved_regs(frame_info, &(frame_saved_regs))
sh_frame_find_saved_regs(frame_info, &(frame_saved_regs))
#define NAMES_HAVE_UNDERSCORE
typedef unsigned short INSN_WORD;
#define CALL_DUMMY_LENGTH 10
extern CORE_ADDR generic_read_register_dummy PARAMS ((struct frame_info *,
int regno));
extern void generic_push_dummy_frame PARAMS ((void));
extern void generic_pop_dummy_frame PARAMS ((void));
extern int generic_pc_in_call_dummy PARAMS ((CORE_ADDR pc,
CORE_ADDR fp,
CORE_ADDR sp));
extern char * generic_find_dummy_frame PARAMS ((CORE_ADDR pc,
CORE_ADDR fp,
CORE_ADDR sp));
extern void sh_push_return_address PARAMS ((CORE_ADDR));
extern CORE_ADDR sh_push_arguments PARAMS ((int nargs,
struct value **args,
CORE_ADDR sp,
unsigned char struct_return,
CORE_ADDR struct_addr));
extern int generic_frame_chain_valid PARAMS((CORE_ADDR, struct frame_info *));
#define CALL_DUMMY { }
#define CALL_DUMMY_LENGTH (0)
#define CALL_DUMMY_START_OFFSET (0)
#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
#define CALL_DUMMY_ADDRESS() (entry_point_address ())
#define PUSH_RETURN_ADDRESS(PC) (sh_push_return_address (PC))
#define FRAME_CHAIN(FRAME) (sh_frame_chain(FRAME))
#define PUSH_DUMMY_FRAME (generic_push_dummy_frame ())
#define FRAME_CHAIN_VALID(FP, FRAME) (generic_frame_chain_valid (FP, FRAME))
#define PC_IN_CALL_DUMMY(PC, SP, FP) (generic_pc_in_call_dummy (PC, SP, FP))
#define FIX_CALL_DUMMY(DUMMYNAME, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP)
#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
(SP) = sh_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
/* Discard from the stack the innermost frame, restoring all saved
registers. */
#define POP_FRAME pop_frame();
#define POP_FRAME sh_pop_frame();
#define NOP {0x20, 0x0b}
#define REGISTER_SIZE 4
#define COERCE_FLOAT_TO_DOUBLE 1