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Fix off-by-one error which refused to read final byte of extram

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This commit is contained in:
Toby Jaffey 2025-12-12 15:01:56 +00:00
parent cb717ed108
commit bba5fa654c
1 changed files with 2 additions and 2 deletions
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4
uvm32/uvm32.c
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@ -160,7 +160,7 @@ bool get_safeptr(uvm32_state_t *vmst, uint32_t addr, uint32_t len, uvm32_evt_sys
return false; return false;
} else { } else {
uint32_t ptrstart = addr - UVM32_EXTRAM_BASE; uint32_t ptrstart = addr - UVM32_EXTRAM_BASE;
if ((ptrstart > vmst->extramLen) || (ptrstart + len >= vmst->extramLen)) { if ((ptrstart > vmst->extramLen) || (ptrstart + len > vmst->extramLen)) {
setStatusErr(vmst, UVM32_ERR_MEM_RD); setStatusErr(vmst, UVM32_ERR_MEM_RD);
buf->ptr = (uint8_t *)NULL; buf->ptr = (uint8_t *)NULL;
buf->len = 0; buf->len = 0;
@ -172,7 +172,7 @@ bool get_safeptr(uvm32_state_t *vmst, uint32_t addr, uint32_t len, uvm32_evt_sys
} }
} else { } else {
uint32_t ptrstart = addr - MINIRV32_RAM_IMAGE_OFFSET; uint32_t ptrstart = addr - MINIRV32_RAM_IMAGE_OFFSET;
if ((ptrstart > UVM32_MEMORY_SIZE) || (ptrstart + len >= UVM32_MEMORY_SIZE)) { if ((ptrstart > UVM32_MEMORY_SIZE) || (ptrstart + len > UVM32_MEMORY_SIZE)) {
setStatusErr(vmst, UVM32_ERR_MEM_RD); setStatusErr(vmst, UVM32_ERR_MEM_RD);
buf->ptr = (uint8_t *)NULL; buf->ptr = (uint8_t *)NULL;
buf->len = 0; buf->len = 0;