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Differential D32960 Diff 99434 sys/amd64/ia32/ia32_syscall.c

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sys/amd64/ia32/ia32_syscall.c

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#include <machine/segments.h> #include <machine/segments.h>
#include <machine/specialreg.h> #include <machine/specialreg.h>
#include <machine/sysarch.h> #include <machine/sysarch.h>
#include <machine/frame.h> #include <machine/frame.h>
#include <machine/md_var.h> #include <machine/md_var.h>
#include <machine/pcb.h> #include <machine/pcb.h>
#include <machine/cpufunc.h> #include <machine/cpufunc.h>
#include "vdso_ia32_offsets.h"
extern const char _binary_elf_vdso32_so_1_start[];
extern const char _binary_elf_vdso32_so_1_end[];
extern char _binary_elf_vdso32_so_1_size;
#define IDTVEC(name) __CONCAT(X,name) #define IDTVEC(name) __CONCAT(X,name)
extern inthand_t IDTVEC(int0x80_syscall), IDTVEC(int0x80_syscall_pti), extern inthand_t IDTVEC(int0x80_syscall), IDTVEC(int0x80_syscall_pti),
IDTVEC(rsvd), IDTVEC(rsvd_pti); IDTVEC(rsvd), IDTVEC(rsvd_pti);
void ia32_syscall(struct trapframe *frame); /* Called from asm code */ void ia32_syscall(struct trapframe *frame); /* Called from asm code */
void void
▲ Show 20 Lines • Show All 156 Lines • ▼ Show 20 Linessetup_lcall_gate(void)
struct i386_ldt_args uap; struct i386_ldt_args uap;
struct user_segment_descriptor desc; struct user_segment_descriptor desc;
uint32_t lcall_addr; uint32_t lcall_addr;
int error; int error;
bzero(&uap, sizeof(uap)); bzero(&uap, sizeof(uap));
uap.start = 0; uap.start = 0;
uap.num = 1; uap.num = 1;
lcall_addr = curproc->p_sysent->sv_psstrings - sz_lcall_tramp; lcall_addr = curproc->p_sysent->sv_psstrings -
(_binary_elf_vdso32_so_1_end - _binary_elf_vdso32_so_1_start) +
VDSO_LCALL_TRAMP_OFFSET;
bzero(&desc, sizeof(desc)); bzero(&desc, sizeof(desc));
desc.sd_type = SDT_MEMERA; desc.sd_type = SDT_MEMERA;
desc.sd_dpl = SEL_UPL; desc.sd_dpl = SEL_UPL;
desc.sd_p = 1; desc.sd_p = 1;
desc.sd_def32 = 1; desc.sd_def32 = 1;
desc.sd_gran = 1; desc.sd_gran = 1;
desc.sd_lolimit = 0xffff; desc.sd_lolimit = 0xffff;
desc.sd_hilimit = 0xf; desc.sd_hilimit = 0xf;
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