JehanneOS/newlib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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

Browse Source 
* 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
parent 5b8fb10d65
commit ab8bc7614c
16 changed files with 273 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
libgloss/rx/crt0.S
View File

@ -40,11 +40,24 @@ _start:
mov #__stack, r0
mvtc #__vectors, intb
/* Copy the .data section from ROM into RAM. */
mov #__datastart, r1
mov #__romdatastart, r2
mov #__romdatacopysize, r3
smovf
#ifdef __RX_DISALLOW_STRING_INSNS__
cmp #0, r3
beq 2f
1: mov.b [r2+], r5
mov.b r5, [r1+]
sub #1, r3
bne 1b
2:
#else
smovf
#endif
/* Initialise the contents of the .bss section. */
mov #__bssstart, r1
mov #0, r2
mov #__bsssize, r3