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* config/mips/tm-mips.h (EXTRACT_STRUCT_VALUE_ADDRESS): 

Get struct return address from v0, not a0.
This commit is contained in:
Jim Kingdon 1993-08-26 21:49:40 +00:00
parent eb03abe8da
commit 138dd57ce0
1 changed files with 7 additions and 1 deletions
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8
gdb/config/mips/tm-mips.h
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@ -115,6 +115,7 @@ extern CORE_ADDR mips_skip_prologue PARAMS ((CORE_ADDR addr, int lenient));
but do serve to get the desired values when passed to read_register. */
#define ZERO_REGNUM 0 /* read-only register, always 0 */
#define V0_REGNUM 2 /* Function integer return value */
#define A0_REGNUM 4 /* Loc of first arg during a subr call */
#define SP_REGNUM 29 /* Contains address of top of stack */
#define RA_REGNUM 31 /* Contains return address value */
@ -232,8 +233,13 @@ extern CORE_ADDR mips_skip_prologue PARAMS ((CORE_ADDR addr, int lenient));
/* Extract from an array REGBUF containing the (raw) register state
the address in which a function should return its structure value,
as a CORE_ADDR (or an expression that can be used as one). */
/* The address is passed in a0 upon entry to the function, but when
the function exits, the compiler has copied the value to v0. This
seems to be a convention followed by both cc and gcc. */
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF+16))
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
(extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \
REGISTER_RAW_SIZE (V0_REGNUM)))
/* Structures are returned by ref in extra arg0 */
#define USE_STRUCT_CONVENTION(gcc_p, type) 1