diff options
| author | Thomas Huth <thuth@redhat.com> | 2023-07-21 11:47:20 +0200 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2023-09-11 11:45:54 +1000 |
| commit | 058096f1c55ab688db7e1d6814aaefc1bcd87f7a (patch) | |
| tree | b7ac0207603fd9951cd95300b3c96079f41158de /hw | |
| parent | c255946e3df4d9660e4f468a456633c24393d468 (diff) | |
| download | focaccia-qemu-058096f1c55ab688db7e1d6814aaefc1bcd87f7a.tar.gz focaccia-qemu-058096f1c55ab688db7e1d6814aaefc1bcd87f7a.zip | |
hw/char/riscv_htif: Fix the console syscall on big endian hosts
Values that have been read via cpu_physical_memory_read() from the
guest's memory have to be swapped in case the host endianess differs
from the guest.
Fixes: a6e13e31d5 ("riscv_htif: Support console output via proxy syscall")
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-Id: <20230721094720.902454-3-thuth@redhat.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/char/riscv_htif.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c index f96df40124..40de6b8b77 100644 --- a/hw/char/riscv_htif.c +++ b/hw/char/riscv_htif.c @@ -30,6 +30,7 @@ #include "qemu/timer.h" #include "qemu/error-report.h" #include "exec/address-spaces.h" +#include "exec/tswap.h" #include "sysemu/dma.h" #define RISCV_DEBUG_HTIF 0 @@ -209,11 +210,11 @@ static void htif_handle_tohost_write(HTIFState *s, uint64_t val_written) } else { uint64_t syscall[8]; cpu_physical_memory_read(payload, syscall, sizeof(syscall)); - if (syscall[0] == PK_SYS_WRITE && - syscall[1] == HTIF_DEV_CONSOLE && - syscall[3] == HTIF_CONSOLE_CMD_PUTC) { + if (tswap64(syscall[0]) == PK_SYS_WRITE && + tswap64(syscall[1]) == HTIF_DEV_CONSOLE && + tswap64(syscall[3]) == HTIF_CONSOLE_CMD_PUTC) { uint8_t ch; - cpu_physical_memory_read(syscall[2], &ch, 1); + cpu_physical_memory_read(tswap64(syscall[2]), &ch, 1); qemu_chr_fe_write(&s->chr, &ch, 1); resp = 0x100 | (uint8_t)payload; } else { |