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thermosphere: add cctx->userFrame

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TuxSH 2020-01-13 22:46:10 +00:00
parent dd96c8b32b
commit a7741c8576
2 changed files with 27 additions and 22 deletions
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39
thermosphere/src/core_ctx.h
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@ -20,29 +20,32 @@
#include "barrier.h"
#include "execute_function.h"
struct ExceptionStackFrame;
typedef struct CoreCtx {
u64 kernelArgument; // @0x00
uintptr_t kernelEntrypoint; // @0x08
u8 *crashStack; // @0x10
u64 scratch; // @0x18
u32 coreId; // @0x20
u8 gicInterfaceMask; // @0x24. Equal to BIT(coreId) anyway
bool isBootCore; // @0x25
bool warmboot; // @0x26
// "Execute function"
ExecutedFunction executedFunction; // @0x28
void *executedFunctionArgs; // @0x30
Barrier executedFunctionBarrier; // @0x38
bool executedFunctionSync; // @0x3C
struct ExceptionStackFrame *userFrame; // @0x00
u64 scratch; // @0x08
u8 *crashStack; // @0x10
u64 kernelArgument; // @0x18
uintptr_t kernelEntrypoint; // @0x20
u32 coreId; // @0x28
u8 gicInterfaceMask; // @0x2C. Equal to BIT(coreId) anyway
bool isBootCore; // @0x2D
bool warmboot; // @0x2E
// Timer stuff
u64 totalTimeInHypervisor; // @0x40. cntvoff_el2 is updated to that value.
u64 emulPtimerCval; // @0x48. When setting cntp_cval_el0 and on interrupt
u64 totalTimeInHypervisor; // @0x30. cntvoff_el2 is updated to that value.
u64 emulPtimerCval; // @0x38. When setting cntp_cval_el0 and on interrupt
// "Execute function"
ExecutedFunction executedFunction; // @0x40
void *executedFunctionArgs; // @0x48
Barrier executedFunctionBarrier; // @0x50
bool executedFunctionSync; // @0x54
} CoreCtx;
static_assert(offsetof(CoreCtx, executedFunctionSync) == 0x3C, "Wrong definition for CoreCtx");
static_assert(offsetof(CoreCtx, emulPtimerCval) == 0x48, "Wrong definition for CoreCtx");
static_assert(offsetof(CoreCtx, warmboot) == 0x2E, "Wrong definition for CoreCtx");
static_assert(offsetof(CoreCtx, emulPtimerCval) == 0x38, "Wrong definition for CoreCtx");
static_assert(offsetof(CoreCtx, executedFunctionSync) == 0x54, "Wrong definition for CoreCtx");
extern CoreCtx g_coreCtxs[4];
register CoreCtx *currentCoreCtx asm("x18");

10
thermosphere/src/exception_vectors.s
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@ -65,12 +65,12 @@
.macro PIVOT_STACK_FOR_CRASH
// Note: x18 assumed uncorrupted
// Note: replace sp_el0 with crashing sp
str x16, [x18, #0x18] // currentCoreCtx->scratch = x16
str x16, [x18, #8] // currentCoreCtx->scratch = x16
mov x16, sp
msr sp_el0, x16
ldr x16, [x18, #0x10] // currentCoreCtx->crashStack
ldr x16, [x18, #0x10] // currentCoreCtx->crashStack
mov sp, x16
ldr x16, [x18, #0x18]
ldr x16, [x18, #8]
.endm
.equ EXCEPTION_TYPE_HOST, 0
@ -85,14 +85,16 @@ vector_entry \name
SAVE_MOST_REGISTERS
mov x0, sp
.if \type == EXCEPTION_TYPE_GUEST
ldp x18, xzr, [sp, #STACK_FRAME_SIZE]
str x0, [x18] // currentCoreCtx->userFrame
mov w1, #1
.else
mov w1, #0
.endif
mov x0, sp
bl exceptionEntryPostprocess
.endm