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throw exception when scheduling trap 004 for non existing pages

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folkert van heusden 2023-03-21 19:34:58 +01:00
parent 7ea2fa0033
commit 253d8437eb
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
1 changed files with 5 additions and 2 deletions
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7
bus.cpp
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@ -17,7 +17,7 @@
// see also https://github.com/espressif/esp-idf/issues/1934 // see also https://github.com/espressif/esp-idf/issues/1934
constexpr int n_pages = 12; constexpr int n_pages = 12;
#else #else
constexpr int n_pages = 128; // 1MB constexpr int n_pages = 32; // 32=256kB (for EKBEEx.BIC)
#endif #endif
constexpr uint16_t di_ena_mask[4] = { 4, 2, 0, 1 }; constexpr uint16_t di_ena_mask[4] = { 4, 2, 0, 1 };
@ -309,8 +309,11 @@ uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev,
uint32_t m_offset = calculate_physical_address(run_mode, a, !peek_only, false, peek_only, space == d_space); uint32_t m_offset = calculate_physical_address(run_mode, a, !peek_only, false, peek_only, space == d_space);
if (peek_only == false && m_offset >= n_pages * 8192) { if (peek_only == false && m_offset >= n_pages * 8192) {
if (!peek_only) DOLOG(debug, false, "Read non existing mapped memory (%o >= %o)", m_offset, n_pages * 8192); if (!peek_only) DOLOG(debug, true, "Read non existing mapped memory (%o >= %o)", m_offset, n_pages * 8192);
c->schedule_trap(004); // no such memory c->schedule_trap(004); // no such memory
throw 6;
} }
if (word_mode) if (word_mode)