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Mem write odd #730

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merged 9 commits into from
Aug 1, 2018
Merged

Mem write odd #730

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c1abc8a
Use local variable for read_result instead of *ret, and fix
donmr Jul 26, 2018
185b02f
Merge branch 'master' of https://github.com/texane/stlink
donmr Jul 26, 2018
a20d499
Found a problem when reading an odd (%4) number of bytes at the end
donmr Jul 26, 2018
dc89eda
Fix Issues from Fabien-Chouteau's review of my previous patch in isue…
donmr Jul 27, 2018
9058556
Revert change to mem_write() so it does not confuse fixes to do_semih…
donmr Jul 27, 2018
44b3392
Add cast to avoid warning.
donmr Jul 27, 2018
49680dd
Restore change to mem_write to return immeadiately if len == 0.
donmr Jul 27, 2018
6f02484
Merge pull request #2 from texane/master
donmr Jul 28, 2018
e55a2d9
Remove cast of "-1" to uint32_t. It's now compared to a ssize_t
donmr Jul 29, 2018
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Use local variable for read_result instead of *ret, and fix 
calculation of *ret for EOF case.
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@donmr
donmr committed Jul 26, 2018
commit c1abc8ae74ec1d2926b460fe4a58bcb0e712da0f
5 changes: 3 additions & 2 deletions src/gdbserver/semihosting.c
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Original file line number Diff line number Diff line change
Expand Up @@ -307,6 +307,7 @@ int do_semihosting (stlink_t *sl, uint32_t r0, uint32_t r1, uint32_t *ret) {
int fd;
uint32_t buffer_len;
void *buffer;
int read_result;

if (mem_read(sl, r1, args, sizeof (args)) != 0 ) {
DLOG("Semihosting SYS_READ error: "
Expand Down Expand Up @@ -337,7 +338,7 @@ int do_semihosting (stlink_t *sl, uint32_t r0, uint32_t r1, uint32_t *ret) {
DLOG("Semihosting: read(%d, target_addr:0x%08x, %zu)\n", fd,
buffer_address, buffer_len);

*ret = (uint32_t)read(fd, buffer, buffer_len);
read_result = (uint32_t)read(fd, buffer, buffer_len);
saved_errno = errno;

if (*ret == (uint32_t)-1) {
Expand All @@ -350,7 +351,7 @@ int do_semihosting (stlink_t *sl, uint32_t r0, uint32_t r1, uint32_t *ret) {
*ret = buffer_len;
return -1;
} else {
*ret -= buffer_len;
*ret = buffer_len - read_result;
}
}

Expand Down