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h8300: gcc-8.1 fix

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Since gcc 8.1 does not generate an assignment statement to er 0,
we had to explicitly write it.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
This commit is contained in:
Yoshinori Sato 2018-07-13 16:36:21 +09:00
parent 686320e94d
commit 811d1b0e65
1 changed files with 4 additions and 3 deletions
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7
arch/h8300/kernel/sim-console.c
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@ -13,12 +13,13 @@
static void sim_write(struct console *con, const char *s, unsigned n)
{
register const int fd __asm__("er0") = 1; /* stdout */
register const char *_ptr __asm__("er1") = s;
register const unsigned _len __asm__("er2") = n;
__asm__(".byte 0x5e,0x00,0x00,0xc7\n\t" /* jsr @0xc7 (sys_write) */
: : "g"(fd), "g"(_ptr), "g"(_len));
__asm__("sub.l er0,er0\n\t" /* er0 = 1 (stdout) */
"inc.l #1,er0\n\t"
".byte 0x5e,0x00,0x00,0xc7\n\t" /* jsr @0xc7 (sys_write) */
: : "g"(_ptr), "g"(_len):"er0");
}
static int __init sim_setup(struct earlycon_device *device, const char *opt)