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For the RX port, avoid using string instructions when __RX_DISALLOW_STRING_INSNS__ is defined.

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* rx/crt0.S (_start): If string instructions are not allowed,
	avoid using SMOVF.

	* libc/machine/rx/memchr.S: Add non-string insn using version.
	* libc/machine/rx/memcpy.S: Likewise.
	* libc/machine/rx/memmove.S: Likewise.
	* libc/machine/rx/mempcpy.S: Likewise.
	* libc/machine/rx/strcat.S: Likewise.
	* libc/machine/rx/strcmp.S: Likewise.
	* libc/machine/rx/strcpy.S: Likewise.
	* libc/machine/rx/strlen.S: Likewise.
	* libc/machine/rx/strncat.S: Likewise.
	* libc/machine/rx/strncmp.S: Likewise.
	* libc/machine/rx/strncpy.S: Likewise.
This commit is contained in:
Nick Clifton
2015-04-09 09:20:00 +01:00
committed by Corinna Vinschen
parent 45d0b17928
commit cd0d459135
16 changed files with 273 additions and 1 deletions
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5
include/elf/rx.h
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@@ -120,6 +120,11 @@ END_RELOC_NUMBERS (R_RX_max)
#define E_FLAG_RX_PID (1 << 2) /* Unofficial - DJ */
#define E_FLAG_RX_ABI (1 << 3) /* Binary passes stacked arguments using natural alignment. Unofficial - NC. */
#define E_FLAG_RX_SINSNS_SET (1 << 6) /* Set if bit-5 is significant. */
#define E_FLAG_RX_SINSNS_YES (1 << 7) /* Set if string instructions are used in the binary. */
#define E_FLAG_RX_SINSNS_NO 0 /* Bit-5 if this binary must not be linked with a string instruction using binary. */
#define E_FLAG_RX_SINSNS_MASK (3 << 6) /* Mask of bits used to determine string instruction use. */
/* These define the addend field of R_RX_RH_RELAX relocations. */
#define RX_RELAXA_IMM6 0x00000010 /* Imm8/16/24/32 at bit offset 6. */
#define RX_RELAXA_IMM12 0x00000020 /* Imm8/16/24/32 at bit offset 12. */