From: Stefan Markovic <smarko...@wavecomp.com>
Signed-off-by: Yongbok Kim <yongbok....@mips.com>
Signed-off-by: Aleksandar Markovic <amarko...@wavecomp.com>
Signed-off-by: Stefan Markovic <smarko...@wavecomp.com>
---
hw/mips/mips_malta.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index d1a7c1f..8bb1686 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -643,7 +643,12 @@ static void write_bootloader_nanomips(uint8_t *base,
int64_t run_addr,
stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
/* to_here: */
- stw_p(p++, 0x0080); stw_p(p++, 0x0002); /* li a0,2 */
+ if (semihosting_get_argc()) {
+ /* Preserve a0 content as arguments have been passed */
+ stw_p(p++, 0x8000); stw_p(p++, 0xc000); /* nop */
+ } else {
+ stw_p(p++, 0x0080); stw_p(p++, 0x0002); /* li a0,2 */
+ }
stw_p(p++, 0xe3a0 | NM_HI1(ENVP_ADDR - 64));
stw_p(p++, NM_HI2(ENVP_ADDR - 64));
/* lui sp,%hi(ENVP_ADDR - 64) */
--
2.7.4
