mips_malta: Fix semihosting argument passing for nanoMIPS bare metal
Fix passing argument for nanoMIPS bare metal related to the semihosting regime. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Yongbok Kim <yongbok.kim@mips.com> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
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@ -630,8 +630,14 @@ static void write_bootloader_nanomips(uint8_t *base, int64_t run_addr,
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/* nop */
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/* to_here: */
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stw_p(p++, 0x0080); stw_p(p++, 0x0002);
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if (semihosting_get_argc()) {
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/* Preserve a0 content as arguments have been passed */
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stw_p(p++, 0x8000); stw_p(p++, 0xc000);
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/* nop */
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} else {
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stw_p(p++, 0x0080); stw_p(p++, 0x0002);
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/* li a0,2 */
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}
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stw_p(p++, 0xe3a0 | NM_HI1(ENVP_ADDR - 64));
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