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FFI: Unify stack setup for C calls in interpreter.

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This commit is contained in:
Mike Pall
2023-08-29 02:12:13 +02:00
parent 7cc53f0b85
commit cf903edb30
9 changed files with 63 additions and 54 deletions
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7
src/lj_ccall.h
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@@ -152,14 +152,15 @@ typedef union FPRArg {
LJ_STATIC_ASSERT(CCALL_NUM_GPR <= CCALL_MAX_GPR);
LJ_STATIC_ASSERT(CCALL_NUM_FPR <= CCALL_MAX_FPR);
#define CCALL_MAXSTACK 32
#define CCALL_NUM_STACK 31
#define CCALL_SIZE_STACK (CCALL_NUM_STACK * CTSIZE_PTR)
/* -- C call state -------------------------------------------------------- */
typedef LJ_ALIGN(CCALL_ALIGN_CALLSTATE) struct CCallState {
void (*func)(void); /* Pointer to called function. */
uint32_t spadj; /* Stack pointer adjustment. */
uint8_t nsp; /* Number of stack slots. */
uint8_t nsp; /* Number of bytes on stack. */
uint8_t retref; /* Return value by reference. */
#if LJ_TARGET_X64
uint8_t ngpr; /* Number of arguments in GPRs. */
@@ -178,7 +179,7 @@ typedef LJ_ALIGN(CCALL_ALIGN_CALLSTATE) struct CCallState {
FPRArg fpr[CCALL_NUM_FPR]; /* Arguments/results in FPRs. */
#endif
GPRArg gpr[CCALL_NUM_GPR]; /* Arguments/results in GPRs. */
GPRArg stack[CCALL_MAXSTACK]; /* Stack slots. */
GPRArg stack[CCALL_NUM_STACK]; /* Stack slots. */
} CCallState;
/* -- C call handling ----------------------------------------------------- */