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cpu: mips_pic32_common: Handle UHI read

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Signed-off-by: Francois Berder <18538310+francois-berder@users.noreply.github.com>
This commit is contained in:
Francois Berder 2020-01-08 21:17:50 +00:00
parent 65d675a8cf
commit 847fedc754
1 changed files with 7 additions and 2 deletions
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9
cpu/mips32r2_common/thread_arch.c
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@ -233,10 +233,15 @@ _mips_handle_exception(struct gpctx *ctx, int exception)
irq_restore(status);
return;
}
else if (ctx->t2[1] == __MIPS_UHI_READ && ctx->a[0] == STDIN_FILENO) {
ctx->v[0] = stdio_read((void *)ctx->a[1], ctx->a[2]);
ctx->epc += 4; /* move PC past the syscall */
return;
}
else if (ctx->t2[1] == __MIPS_UHI_FSTAT &&
(ctx->a[0] == STDOUT_FILENO || ctx->a[0] == STDERR_FILENO)) {
(ctx->a[0] == STDOUT_FILENO || ctx->a[0] == STDIN_FILENO || ctx->a[0] == STDERR_FILENO)) {
/*
* Printf fstat's the stdout/stderr file so
* Printf fstat's the stdout/stdin/stderr file so
* fill out a minimal struct stat.
*/
struct stat *sbuf = (struct stat *)ctx->a[1];