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Differential D15468 Diff 51367 head/sys/compat/cloudabi64/cloudabi64_module.c

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head/sys/compat/cloudabi64/cloudabi64_module.c

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cloudabi64_copyout_strings(struct image_params *imgp) cloudabi64_copyout_strings(struct image_params *imgp)
{ {
struct image_args *args; struct image_args *args;
uintptr_t begin; uintptr_t begin;
size_t len; size_t len;
/* Copy out program arguments. */ /* Copy out program arguments. */
args = imgp->args; args = imgp->args;
len = args->begin_envv - args->begin_argv; len = exec_args_get_begin_envv(args) - args->begin_argv;
begin = rounddown2(imgp->sysent->sv_usrstack - len, sizeof(register_t)); begin = rounddown2(imgp->sysent->sv_usrstack - len, sizeof(register_t));
copyout(args->begin_argv, (void *)begin, len); copyout(args->begin_argv, (void *)begin, len);
return ((register_t *)begin); return ((register_t *)begin);
} }
int int
cloudabi64_fixup(register_t **stack_base, struct image_params *imgp) cloudabi64_fixup(register_t **stack_base, struct image_params *imgp)
{ {
Show All 38 Lines if (error != 0)
return (error); return (error);
/* /*
* Compute length of program arguments. As the argument data is * Compute length of program arguments. As the argument data is
* binary safe, we had to add a trailing null byte in * binary safe, we had to add a trailing null byte in
* exec_copyin_data_fds(). Undo this by reducing the length. * exec_copyin_data_fds(). Undo this by reducing the length.
*/ */
args = (Elf64_Auxargs *)imgp->auxargs; args = (Elf64_Auxargs *)imgp->auxargs;
argdatalen = imgp->args->begin_envv - imgp->args->begin_argv; argdatalen = exec_args_get_begin_envv(imgp->args) -
imgp->args->begin_argv;
if (argdatalen > 0) if (argdatalen > 0)
--argdatalen; --argdatalen;
/* Write out an auxiliary vector. */ /* Write out an auxiliary vector. */
cloudabi64_auxv_t auxv[] = { cloudabi64_auxv_t auxv[] = {
#define VAL(type, val) { .a_type = (type), .a_val = (val) } #define VAL(type, val) { .a_type = (type), .a_val = (val) }
#define PTR(type, ptr) { .a_type = (type), .a_ptr = (uintptr_t)(ptr) } #define PTR(type, ptr) { .a_type = (type), .a_ptr = (uintptr_t)(ptr) }
PTR(CLOUDABI_AT_ARGDATA, argdata), PTR(CLOUDABI_AT_ARGDATA, argdata),
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