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semihosting: Use struct gdb_stat in common_semi_flen_cb 

Load the entire 64-bit size value.  While we're at it,
use offsetof instead of an integer constant.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-04-29 14:55:21 -07:00
parent c805e11875
commit cd7f29e335
1 changed files with 6 additions and 8 deletions
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14
semihosting/arm-compat-semi.c
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@ -325,14 +325,12 @@ static void
common_semi_flen_cb(CPUState *cs, target_ulong ret, target_ulong err) common_semi_flen_cb(CPUState *cs, target_ulong ret, target_ulong err)
{ {
if (!err) { if (!err) {
/* /* The size is always stored in big-endian order, extract the value. */
* The size is always stored in big-endian order, extract uint64_t size;
* the value. We assume the size always fit in 32 bits. cpu_memory_rw_debug(cs, common_semi_flen_buf(cs) +
*/ offsetof(struct gdb_stat, gdb_st_size),
uint32_t size; &size, 8, 0);
cpu_memory_rw_debug(cs, common_semi_flen_buf(cs) + 32, ret = be64_to_cpu(size);
(uint8_t *)&size, 4, 0);
ret = be32_to_cpu(size);
} }
common_semi_cb(cs, ret, err); common_semi_cb(cs, ret, err);
} }