target/arm/hyp_gdbstub.c

4  * Copyright Mian-M. Hamayun 2013, Virtual Open Systems
8  * See the COPYING file in the top-level directory.
26  * simple un-linked breakpoints (i.e. we don't chain breakpoints
34  * +------+------+-------+-----+----+------+-----+------+-----+---+
35  * | RES0 |  BT  |  LBN  | SSC | HMC| RES0 | BAS | RES0 | PMC | E |
36  * +------+------+-------+-----+----+------+-----+------+-----+---+
40  * SSC/HMC/PMC: Security, Higher and Priv access control (Table D-12)
42  * E: Enable bit
47  * +------+-----------+----------+-----+
49  * +------+-----------+----------+-----+
60         .bcr = 0x1,                             /* BCR E=1, enable */  in insert_hw_breakpoint()
65         return -ENOBUFS;  in insert_hw_breakpoint()
86     for (i = 0; i < hw_breakpoints->len; i++) {  in delete_hw_breakpoint()
88         if (brk->bvr == pc) {  in delete_hw_breakpoint()
93     return -ENOENT;  in delete_hw_breakpoint()
110  * +------+-------+------+----+-----+-----+-----+-----+-----+-----+---+
111  * | RES0 |  MASK | RES0 | WT | LBN | SSC | HMC | BAS | LSC | PAC | E |
112  * +------+-------+------+----+-----+-----+-----+-----+-----+-----+---+
115  * WT: 0 - unlinked, 1 - linked (not currently used)
117  * SSC/HMC/PAC: Security, Higher and Priv access control (Table D2-11)
120  * E: Enable
131         .wcr = R_DBGWCR_E_MASK, /* E=1, enable */  in insert_hw_watchpoint()
137         return -ENOBUFS;  in insert_hw_watchpoint()
141      * HMC=0 SSC=0 PAC=3 will hit EL0 or EL1, any security state,  in insert_hw_watchpoint()
165         int bas = (1 << len) - 1;  in insert_hw_watchpoint()
167         wp.wcr = deposit32(wp.wcr, 5 + off, 8 - off, bas);  in insert_hw_watchpoint()
173             wp.wvr &= ~((1 << bits) - 1);  in insert_hw_watchpoint()
177             return -ENOBUFS;  in insert_hw_watchpoint()
188     uint64_t addr_top, addr_bottom = wp->wvr;  in check_watchpoint_in_range()
189     int bas = extract32(wp->wcr, 5, 8);  in check_watchpoint_in_range()
190     int mask = extract32(wp->wcr, 24, 4);  in check_watchpoint_in_range()
226     return -ENOENT;  in delete_hw_watchpoint()
235         if (bp->bvr == pc) {  in find_hw_breakpoint()
248             return &get_hw_wp(i)->details;  in find_hw_watchpoint()